Sql case when exists multiple stack overflow example. It did not use the index on t2.

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Sql case when exists multiple stack overflow example. A single column cannot have multiple values at the same Both values need to exist in the table, as in i need to select a row in table A where BOTH values exists in a row in table B, in Table A there a row where Country is UK and Example (from here):. Viewed 418 times 1 I have this 2 tables. You cannot evaluate multiple expressions in a Simple case expression, which is what you were attempting This is your comprehensive guide to multiple case when in SQL. col4 is referenced to tbl2. Note that this goes in the from clause, because expressions in the select can only return scalar values. Note: SQL Statements that use the SQL EXISTS Condition are very inefficient since the sub-query is RE-RUN for EVERY row in the outer query's table. If the id doesn't exist, nothing will be updated. To learn more, see our tips on writing great That sounds like what I'm trying to do. The WHERE clause in SQL queries filters data based on a specified expression or condition. procuredvalue + i. Id) when '2' then (select value from C where C. I'll simplify it to the part where I'm having trouble. Number WHEN '1121231','31242323' THEN 1 WHEN '234523','2342423' THEN 2 END AS Test FROM tblClient c; The statement would allow an input of multiple paired values for NameID and ValueID; The general logic needed would be something like this: if ALL NameID and ValueID Pairs with-in an OptionID Exists (as shown above in the results) Then Return 'Unique Combination' Else Return 'Combination Exists' Boolean would be fine as well. payer_id. I want to obtain a third column in the first table counting the number of ocurrences in which table1. ecnrun >= 500 THEN 'PRO' WHEN Destcf. The 2nd condition will never be chosen. email is not null then 1 else 0 end `exists` from (select '[email protected]' I want the 'color' set to 'gold' if the member and member_levl from tabC exists in the premium_tab. Each customer can have multiple ID's or Code_Number. We usually define a static condition or value, however, if you need to filter data based on different conditions, this can be I have a class of queries that test for the existence of one of two things. TradeId NOT EXISTS to . ID IS NULL THEN 'NO' ELSE 'YES' END FROM T1 LEFT OUTER JOIN T2 ON T1. Follow edited Nov 14, 2020 at 17:58. ecnrun < 500 THEN 'RTC' ELSE Destcf. You should get one row with the largest numbers of you search words. Only putting in the last CTE to figure this out. If that happens an ORA-01427 exception is thrown. So, for each row in population1 the subquery is run using the value of Population1. If row 10 has both condition_1 and condition_y then it will need to get read and altered twice. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Given the simplicity of your query, and the fact that you are calling it with a single @id its debatable whether the performance needs to be improved. 20s). – Alex Martian Commented Jun 17, 2019 at 14:24 I'd like to either add a case statement to return Y/N for the 'All Complete?' column or exclude all rows where 'All complete' = 'Y'. It looks like this: SET @local variable= CASE when exists (select field from table where value=0) then 0 when exists (select I have two tables. In the second case, the subquery is a correlated subquery. x else y end as xy CASE statement with multiple WHEN THEN in SQL. Only problem would be if people could clock in & out multiple times per day. table_1, table_2, table_3, Here are the CASE expression examples from the PostgreSQL docs (Postgres follows the SQL standard here):. Making statements based on opinion; back them up with references or personal experience. ) As COLUMN1 You can also check where exists() or even case when exists(). Provide details and share your research! But avoid Asking for help, clarification, or responding to other answers. VehicleID --If the previous months value exists in table b (Ex month 44), then take take that months value otherwise take the I am trying to add a computed column to a table. SQL Server, aggregate CASE statements into one single row. SQL:2003 standard allows to define multiple values for simple case expression: SELECT CASE c. It might be just as fast as first selecting by id from table a, and then Stack Overflow for Teams Where developers & technologists share private knowledge with SQL - Case When on same row. dclibd END AS typ_flux, dcqtan FROM Scdcol SELECT CASE WHEN EXISTS (SELECT 1 FROM tblGLUserAccess WHERE GLUserName = 'xxxxxxxx') THEN 1 ELSE 2 END Share. select top 1 * from tblDiscounts order by -- Highest priority First of all, you are using CASE WHEN wrong. It did not use the index on t2. SELECT CASE WHEN EXISTS (SELECT 1 FROM tblGLUserAccess WHERE GLUserName = 'xxxxxxxx') THEN 1 ELSE 2 END Share. Id, NewFiled = (IF EXISTS(SELECT Id FROM TABLE2 WHERE TABLE2. Hence, I guess that putting for example an EXIST clause inside a WHERE clause of the UPDATEstatement would end in many queries and calculations made in vain. using two cases of exists in sql query. "event" = 'newMessage' and plm. You can simplify the logic, but in a slightly different way. SELECT o/n , sku , order_type , state , CASE WHEN order_type = 'Grouped' AND state IN('express', 'arrived', 'shipped') THEN SQL - Match value if exists; else match NULL. I then use this temp table in a join to update my target table but I did not include the entire script. currencyrate is not bound. Select case when exists (select top 1 ID from table. x end as xy from table1 t1 left join table2 t2 on t1. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent I know this works on my tables with one WHERE & AND condition but not with several. Update for more complex examples Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. For my data purposes, the values in the example below are in a series based on the first two I'm using a SQL server statement embedded in some other C# code; and simply want to check if a column exists in my table. id = table1. First one matches with Remove column, To be syntactically correct, the case expression would be: select (case when "plm". Modified 2 years, 9 months ago. You can use IN() to accept multiple values as multi_state:. However given T-SQL works better with set-based solutions, one way to solve this kind of problem is to use order by to get the highest priority result first e. WHEN condition_2 THEN result_2 WHEN condition_n THEN result_n. I've written your table in to a CTE, let me know if you require assistance in adapting the code for your purposes. 93. The answer is This works well until the sub-select returns multiple rows. I'm having trouble understanding CASE SELECT CAST( CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1 ELSE 0 END AS BIT) I just want an . Modified 5 years, 9 How Do I set multiple AND conditions? ex. You can use correlated sub-queries in your Where clause, though you don't show I am working with a database that tracks field trip information for schools. Stack Overflow for Teams Where developers & technologists share private knowledge with SQL case when multiple records. CASE statement based on multiple rows. I've tried to remedy this by using the IN or ANY statements, but select when t1. I have a constant list of tables (e. So, you cannot do what you want. email, case when yt. q). x = t2. ca=table2. 0. A single column cannot have multiple values at the same time. For example, I need a list of users where they have rows with both: meta_key = "utm_campaign" and meta_value = "Summer20222" Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand I want to find any value ("Name"), but I don't want that value if it exists on the same row as a "Type" that equals "Z". SELECT * FROM CONFIRMED WHERE NOT EXISTS ( SELECT * FROM Import_Orders WHERE Import_Orders. SELECT CASE WHEN EXISTS (SELECT 1 FROM ) OR EXISTS (SELECT 1 FROM Multiple THENs in CASE WHEN. In the additional column I'm adding I want to set to 'Y' One option is to create a subquery with an outer join, and then use case: select t. Something like this: MERGE INTO I use complex CASE WHEN for selecting values. "event" end) I have searched this site extensively but cannot find a solution. Follow answered Mar 7, 2018 at 23:28. I need to modify the SELECT results to a certain format for a data In the case expression only scalar values can be used in the THEN part as well as some rules in WHEN as well. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide The CASEs for multi_state both check that state has the values express and arrived/shipped at the same time. I need to update one column in one table with '1' and '0'. Follow answered Dec 5, 2018 at Can you not raise errors within a case statement in T-SQL? I always have problems with SQL case statements :/ begin try declare @i int --set @i = (select COUNT(1) from table_name) I was reading up on the SQL EXISTS Condition and found this snippet from Techonthenet. idn ) THEN 'Teaching Assistant' ELSE 'Student' END AS "Category" FROM "Student" How can this be written in SQL Alchemy? I was able to figure out how CASE can be done. student_idn = "Student". In my query if I do these: SELECT * FROM books WHERE isPresent = 1 && attr IN (Attr1, Attr2) I will get all books because the Book2 has an Attr1 and Attr2 and a Attr3 with isPresent = 1 so it's This dint help, this is already part of dynamic query where I to pivot the the data obtained from these tables. Or even: select case when EXISTS ( select 1 from Products where ProductId IN (1, 10, 100) ) then 1 else 0 end as [ProductExists] You are asking why you might get different numbers of rows. SQL: Using EXISTS() with some other command. Viewed 3k times 1 I have an SQL table: country state county city 'us' 'ny' 'steuben' NULL 'us' 'ny' 'steuben' 'city a' 'us' 'ny' 'steuben' 'city b' 'us' 'ny' NULL: NULL 'us' NULL: NULL: NULL: NULL: NULL: NULL: NULL: The goal is to have some MS SQL Server 2008R2 Management Studio I am running a SELECT on two tables. Table Basket How do you use like, having, and a case statement together? I am basically trying to list all of the unique individuals that are found in a transactional table that have more than 4 "Class A" transactions, or more than 1 "Class B" transactions. IF EXISTS(SELECT gender FROM @genders) BEGIN SELECT * FROM TABLE WHERE field = '123' and gender IN (SELECT distinct gender FROM @genders) END ELSE BEGIN SELECT * FROM TABLE WHERE field = '123' END Share. Here is the example of my query: SELECT ActivityID, Hours = (CASE WHEN ActivityTypeID <> 2 THEN You are right, the first one was more efficient in my test (0. Q' is a string literal. Is it possible to do a MySQL with IF EXISTS query with two There is something called "Logical Query Processing Order". 1. If I select on the filter (Attr1 and Attr2) I want to retrieve all Books that have any of those Attr selected, that means Book1 and Book3 in the example. DECLARE The CASE version. The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or more operators. If the column (ModifiedByUSer here) does exist Is it possible to write multiple queries inside the SQL EXISTS()? Just as this example SELECT EXISTS (SELECT a FROM at WHERE X = :X; SELECT b FROM bt EXISTS is used to return a boolean value, JOIN returns a whole other table. x where t1. Ask Question Asked 3 years, 3 months ago. Provide details and share your research! But avoid Asking for help, The simplest and clearest way is to only compile the statement referencing the column that may or may not exist if it exists. select top 1 * from tblDiscounts order by -- Highest priority Count case when exists. seems to be not-supported to write multiples in when 2nd variant like case grade when 1,2 then. "A" is absent then the whole I have a security table in SQL, 2 columns are of value and the columns can indicate any of the following information, multiple entries of the Option L or D might exist per What is the underlying logic you want to implement? If, for instance, you want to test for the existence of a record to determine to insert or update then a better choice would be to Is there a way of nesting case when statements when one has multiple conditions. Customer = Stack Overflow for Teams Where developers & technologists share private Sql Case When multiple colums and multiple condition. In the first case (no where clause) the SQL Server waits until interpreting the SELECT clause to count the result which is not as DECLARE @TestVal int SET @TestVal = 5 SELECT CASE WHEN @TestVal <=3 THEN 'Top 3' ELSE 'Other' END I saw this sample code online but I couldn't find an example where there was no expression and it had more than one WHEN, so I In C# or most other languages it would be better to use a switch statement rather than successive if statements, as a hash would be used. If you put a WHERE clause it filters that data in advance and can use an index to optimize the query. create or replace force view v_documents_list ( id_doc, attachments_count, total_dimension, This below code would work assuming distribution is not part of any other discrete value; here is the code in a sample form: WITH rt AS ( SELECT 'distribution' AS SQL Case Statement that Evaluates Multiple columns and returns column that matches value criteria? Ask Question Asked 5 years, 9 months ago. Share. It looks like this: SET @local variable= CASE when exists (select field from table where value=0) then 0 when exists (select Thanks for updating with the much better answer for anyone looking for that now. Ask Question Asked 3 years, 9 months ago. clientId=100 and '1'=B. Probably the best approach is to use cross apply. There are a few cases when my query will return Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. id = vm. Cust_ID is a single value, and it's not possible to have a single Cust_ID be both 154 and 30400010112 at the same time. credit_acct_no, i. This code Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. The output should be one column where all the below conditions should be true. But i want to find if i have the certain cust_nbr in the query or not. Is there a preferred (or more performant) way of writing a CASE with multiple WHEN conditions that generate the same value? For example: SELECT CASE WHEN 1 > 0 There are two types of CASE statement, SIMPLE and SEARCHED. TICKETID, CASE WHEN T2. Ask Question Asked 1 year, 2 months ago. ) then (select top 1 ID from table. In the additional column I'm adding I want to set to 'Y' for all rows if 'PROB' exists on any of them, and set to 'N' The first issue is you need to reorder the WHEN conditions to list Both Orders first. If you have a clustered index this means two clustered index updates on top of whatever the other field(s) that were modified were. . SELECT a, CASE WHEN a=1 THEN 'one' WHEN a=2 THEN The where clause in SQL needs to be comparing something to something else. As I understand, the CASE The CASEs for multi_state both check that state has the values express and arrived/shipped at the same time. – JohnLBevan Commented Jul 31, 2014 at 1:37 In this table for example. Therefore, it can be a form of code re-use. Here are some thoughts: items. recipt_no, i. It looks like you are simply trying to say "bring back everything unless @p7_ has the value 1, in In that case, you could simply always update both tables. This query works on t I'm creating a stored procedure when called it first checks to see if the row already exists (by comparing against two parameters) and if it does, it will update a specific column in the row and if the row doesn't exist already it will insert a new row into the table. id) then 'Y' else 'N' end) as in_table2 from table1 t1; Share. x in (a, b, c) and t1. What I found fixed it was using UNION and keeping the EXISTS in separate queries. d<=table2. [Client Name], CASE WHEN EXISTS ( SELECT * FROM [Intera Skip to main Select t1. clientId=100 and '2'=C. spt_values ) then 1 else 0 end If you are trying to get counts for multiple If you can, use CASE expressions in your UPDATE sub-statements to mimic the behavior of having multiple WHEN MATCHED clauses. SeatID, s. For example: SELECT CASE WHEN key = select when t1. But the 'IN' operator in SQL demands that you make some dynamically SQL. But I can't tell you how to fix this, because I can't see the rest of the query or data. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. In other cases, matching rows do not exist The above SQL will surely not work, but I hope you get the idea of what I am proposing. In the WHEN MATCHED case, you can only do one UPDATE (or DELETE) I have a query that results in the output below (this output is for only 1 servicelocation_id, but there are thousands). Improve this question. I have a Market Basket which can contain multiple Items, but now I just want to get all the Baskets which didn't buy a Keyboard (so only BThird should appear). [YourTable] WHERE [YourColumn] = [YourValue]) THEN CAST (1 AS BIT) ELSE CAST (0 AS BIT) END To do this in simple and readable manner I would create some helper logic variables like @ByCompany, to check if we should group by company and so on. As you write that you have tried nearly everything, I think that SQL can't do it alone. sql; mariadb; mariadb-10. 3; Share. SELECT s. Now with this code I get all Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. x else y end as xy from table1 t1 where t1. I've tried to remedy this by using the IN or ANY statements, but I have below entries in DB I am looking for a query where it first checks the below query and if there are entries then it should fetch me the entries with the second query. VehicleID = a. itemid is not unique, so the duplicates are coming from multiple matches. Follow answered May 4, I came across a piece of T-SQL I was trying to convert into Oracle. CASE Statement to COALESCE in SQL. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. As an example, in the table below, I want all Sam and Joe records, but I do not want any Bob records, because one of the rows that Bob exists on, contains a "Z" value in the "Type" field. Modified 5 years, 9 months ago. 5. SELECT (CASE WHEN EXISTS (SELECT 1 FROM table2 @nawomack In that case Andomar's answer looks good. The problem is that I need to count several things and this EXISTS condition is what differentiates an aggregation of another, so I can't move this condition to the WHERE clause. Employee AS e JOIN I would simply use exists: SELECT name, (CASE WHEN EXISTS (SELECT 1 FROM us_table us WHERE ot. ; The I would personally do this with a JOIN rather than correlated subqueries, then use COUNT in the case expression:. Select * from Table 1 union all select * from Table 2 union all Select * from Table 3 I tried thi I'm trying to perform what I believe a very simple case-update SQL to two different column based on a select: PROD_TB: Product_Code Reg_Price Sale_Price A 1000 2000 Skip to main content. But SELECT SQL_CALC_FOUND_ROWS * FROM product_bundles AS bundles WHERE 1 AND NOT EXISTS ( SELECT * FROM product_bundle_parts AS parts LEFT JOIN Long story short: I am trying to use a conditional delimiter in my STUFF() function. if you know otherwise, please comment. 3 A fragment from a bigger query which updates a JSONB field in a different table (I don't think the JSONB stuff has any relevance to the question however): CASE WHEN EXISTS(SELECT r A case expression only returns a single value. 0). id then 'VoiceMessgae' else plm. An example of self referencing is recursion: Recursive Queries Using CTE. dbo. x in (a, b, c); select case when t1. SeatID AND r. select E = case when exists( select 1 from master. I do I have a SQL Query which will compare file_names from web_pub_subfile table and displays information if file is found or no SELECT file_name, CASE WHEN EXISTS(SELECT 1 FROM web_pub_sub I need help with THE CASE WHEN EXISTS, whenever it runs, it completes successfully, but CASE WHEN Exists statement doesn't display ongoing for a value I know does not equal 0. x else y end as xy I came across a piece of T-SQL I was trying to convert into Oracle. TICKETID AND T2. I could just do an 'exists in' and repeat the SQL query, but the issue is that there is a lot of where clauses and I dont want to introduce an area where in the future the two queries could differ when modified in the future. If I had to count only one thing, it could be the solution. I would like to use this result in WHERE clause, but Postgres says column 'd' does not exists. If you want a string result, then you need to be sure that all paths in the case return strings: CASE WHEN I'm creating a stored procedure when called it first checks to see if the row already exists (by comparing against two parameters) and if it does, it will update a specific column in the row This is meant for MS Sql Server 2008. recon_date FROM t_reconcile_t24 i Is it possible to write multiple queries inside the SQL EXISTS()? Just as this example SELECT EXISTS (SELECT a FROM at WHERE X = :X; SELECT b FROM bt WHERE Y = :Y; S Skip to main content. 0. maxmargin) < min_val_seller. SELECT CASE WHEN 1/1 = 1 THEN 'Case 1' WHEN 2/2 = 1 THEN 'Case 2' END; I have a problem in which there is a single user that appears to have both Case 1 and case 2 in multiple rows. I want to avoid running the same query twice if the statement is true. So, you need to select the columns you want in the select: I have the following Stored Procedure which uses multiple IF NOT EXISTS conditions. Currently I have the following CASE statement building a calculated column in a SELECT statement, --but I want to use this column to determine I found putting 2 EXISTS in the WHERE condition made the whole process take significantly longer. InteractionID, a. To learn more, see our tips on writing great Stack Overflow for Teams Where developers And in this case, simply do nothing. Origin = 'Malaysia' AND SELECT (case A. x is null then y else t1. column1 when '1' then (select value from B where B. Your query will be in this way: select typ_flux, SUM(dcqtan) AS qte from ( SELECT CASE WHEN Destcf. item_page=p_ID and I am trying to write an SQL select statement where I need to change a condition (where clause) based on a CASE statement. For example below, where num_students = 2, there are many diff classes. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand I need to run a count query on a table but only if that table exists, SELECT CASE WHEN (SELECT COUNT(*) FROM information_schema. It should just say True or False. customerId int, codeValue int, description varchar, customerData varchar To get all of the customers who do not have an email record (where codeValue = 3), try something like this:. WE need run some UPDATE/INSERT SQL however these UPDATE SQL only get run when another condition is TRUE e. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with SELECT b. Table 1: CA D ----- CA1 4 CA2 5 Table 2: CA D ----- CA1 2 CA1 6 CA1 10 I want to return multiple rows in case statement. FACILITYID) = 0 You can't do this in pure sql since the query is parsed as a whole, including the section SELECT COUNT(*) FROM SYS. Follow answered Dec 7, 2016 at 11:01. Case When a <5 - obviously can't be hashed. Discover tips and strategies to effectively apply this conditional logic in your queries. The second issue the Cust. I need to create a CASE statement that will look A HRS_PERSON_ID contains multiple rows for the same ID, and I need to know within an ID if the value 'PROB' exists. DevelJoe. Thus the else You can add a select over your queries and use group by in outer select. First WHERE EXISTS (SELECT 1 FROM table2 where table2. It is supposed to be used to return a single value, not a table, as part of for example a select clause. EXISTS is only used to test if a subquery returns results, and short circuits as soon as it A case expression returns a single value -- with a given type. select when t1. I have created a short SQL query which is as below: Declare @tempTable AS TABLE(Country Stack Overflow for Teams Where developers & technologists share private knowledge I am using Oracle SQL Developer. In some cases, matching rows exist in Population2; these are filtered out. Id) when '3' Is there a "better" way to rewrite a SELECT clause where multiple columns use the same CASE WHEN conditions so that the conditions are only checked once? See the example below. For example: SELECT CASE WHEN key = 1 THEN 1 ELSE 2 END FROM testData Update for most recent place to figure out syntax from the SQL Parser. To solve you need to break apart your case expression to multiple where statements and/or use some other technique such as the one above. I have a Stored procedure like. I've tried using a Thanks for contributing an answer to Stack Overflow! Query with multiple EXIST. Or you could write your case expression like this: You can add a select over your queries and use group by in outer select. If you want a string result, then you need to be sure that all paths in the case return strings: CASE WHEN Column1 IS NULL THEN '' ELSE CAST(Column1 AS VARCHAR(255)) END This is more simply written using COALESCE(): COALESCE(CAST(Column1 as VARCHAR(255)), '') It would work for all SQL dialects, unlike double quotes. Having '1' where E_ID are matching in both columns and '0' where E_ID does not exists in the second table. Skip to main content. Col4. The SQL Server analyzes the WHERE clause earlier. Improve this answer. – Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. In order for 'All Complete' to be set to Y, all ID_Status's need to be complete for each customer and each code number. 3. (please make sure you understand how CASE works) having this currency conversion issue. Looks like a data issue or your OR statement for the ADD section needs some work. x in ( select t2. To learn more, see our tips on writing great Can probably omit the Top statement and the * statement to make it a bit more faster, as Exist will exit once it finds a record, so something like this: SELECT CASE WHEN EXISTS (SELECT 1 FROM dbo. *, (case when exists (select 1 from table2 t2 where t2. student_id = us. You can do that by pushing it down to a lower I would like to combine insert/update with a case statement, meaning that I want to insert the row if it doesnt exist, update it if it does, but in both cases with different values (when As of Spark 1. The expression cannot be a subquery or include an alias data type. 0, the more traditional syntax is supported, in response to SPARK-3813: search for "CASE WHEN" in the test source. For your example: (case when SELECT CASE WHEN UserFlag IN ( 'On Order', 'Sold Out', 'On Order,Sold Out') AND QtyAvailable = 0 AND OrderStatus = 'Pending Fulfillment' then 'BackOrder' ELSE 'Not a tbl1. is it possible? or is there any alternate way to do it? select case when 3 = 1 then (select orderid from order_master where Indeed that could work. id) or you can use exists with a CASE WHEN. I know the exists stops once the I have a very long query. DepreciationSchedule AS b ON b. A HRS_PERSON_ID contains multiple rows for the same ID, and I need to know within an ID if the value 'PROB' exists. column1value = 's100') THEN 'exists in column 1' WHEN exists Skip to main Planned maintenance impacting Stack Overflow and all Stack Exchange sites is scheduled for Wednesday, October 23, 2024, 9:00 PM-10:00 PM EDT (Thursday, October 24, 1:00 UTC - I have a huge query which uses case/when often. You are right, the first one was more efficient in my test (0. SQL Fiddle DEMO. To learn more, see our tips on writing great Postgres 9. What happens if we have more than one condition we want to apply to our data? The following example shows how to use the CASE IF EXISTS(SELECT * FROM TicketInformation WHERE TicketID = @HelpdeskID AND QuestionID = 80) UPDATE TicketInformation SET AnswerInput = Null, AnswerID = SQL Case When - I have a column with job status options B & D. student and t2. Create procedure AuditLogProcDetails (@Id int, @LogId int, @LogDescription varchar(2000), @LogStartDate datetime , @LogEndDate datetime , @Task varchar(100) ) as BEGIN IF NOT EXISTS (SELECT * FROM dbo. First, you should fix your data model so you are not storing multiple values in a string. "A" So if the table SYS. Your query will be in this way: select typ_flux, SUM(dcqtan) AS qte from ( SELECT CASE WHEN If in a query we have 2 case scenario satisfying the condition, which one will be picked by the SQL to show the output ? sample Query : SELECT CASE WHEN field1 = 'a' Stack Overflow for Teams Where developers & technologists share private knowledge Do you have a column in either table1 or table2 named 'eligible'? If so, please In examples 2 to 5 the CASE WHEN conditions are exists sub-queries on one or more tables, and they may or may not be correlated sub-queries. It is of the form. something = 1 then 'SOMETEXT' else (select case when Here, a null or no row will be returned (if no row exists). 2. ref_id, providing the hint to use it resulted in the same performance (different I have 4 tables and my first table holds 10 records, I like to check whether those 10 records exist in other tables and put a yes or no condition, all of them have a shared column which is col1, Sorry if it was not clearThe simple question was when you use CASE with exists clause can you access a field, retrieved in exists clause , after then clause. com. x from table2 t2); select case when exists (select x from table1) then x else y end as xy from Change the part. Ask Question Asked 3 years, 5 months As of now, I have a CASE-statement of the form CASE WHEN exists (SELECT * FROM subtable WHERE subtable. subject = 'math' ) then 'yes' else 'no' end) as has_math from table1 t1; Unlike Tim's answer, this is guaranteed to return only one row per student, even if This script will create as many rows as needed in the temp table depending on the StartDate, the Interval, the WHERE statement that has two cases (resulting date is less than today and the row does not exist in the target table PersonChargeTransaction). Add a comment | 6 You can define a variable @Result to fill your data in it . If any Bob has a "Z", I want none of The question is specific to SQL Server, but I would like to extend Martin Smith's answer. I do not have identical keys in the two tables. WOID, CASE WHEN COUNT(f. Base_key IS NULL This works well until the sub-select returns multiple rows. Simple CASE expression: CASE input_expression WHEN when_expression THEN Thanks for contributing an answer to Stack Overflow! SQL Query with multiple CASE statements using the same field as THEN. We have a table with exchange rates, and another with data to be updated. This is because there is a good chance you are altering the same row more than once with the individual statements. I'm not working with BigQuery any more, but I may be again in the future and the more things I have the following query with example account: select account_no, eventid from Table where account_no = '004281200206094138' Producing the following results: I was thinking there'd be Case statements evaluate to a single value, so you cannot return multiple columns from them. The logical AND in Spark is and, not && The CASE statement starts with two identical conditions (Sum(i. g another Table is empty SQL Can I use Case statement for the below multiple conditions. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand For example, a computed column could have the definition: cost AS price * qty. student = t1. * --this is month we want to compare (For example month 45) FROM #changes AS a --this has all the months (for example month 1-50) INNER JOIN work. Multiple conditions in a Case statement First of all, you are using CASE WHEN wrong. SeatName FROM SEATS s WHERE CASE WHEN EXISTS( select 1 from SEAT_ALLOCATION_RULE r where s. STATUS='RETURNED' Multiple methods here are good too, but for me, stay simple. Program, a. To learn more, see our tips on writing great Hence, not exists returns false in all cases, and the nothing is returned. What I need to do is match user_ids with conditions on a per user basis rather than a per row basis. In the meantime, like should do what you want. 5k 21 21 gold badges 139 139 silver badges 178 178 bronze badges. Modified 3 years, 3 months ago. To learn more, see our tips on writing great I need a query that will exclude all results when a case exists. Simple CASE expression: CASE input_expression WHEN when_expression THEN A case expression returns a single value -- with a given type. (select case when xyz. The image below shows user id aaaa appearing more than once for each case evaluation. Now, it does work if I only have 1 record in the premium_tab. To learn more, see our tips on writing great select t1. g. Basically I am using a where clause Though I liked @GordonLindoff's post, I thought the following would have worked just as well: SELECT DISTINCT b. I want to create a case when SQL statement that will check and retrieve employee IDs with both statuses in the The syntax of the SQL CASE expression is: CASE [expression] WHEN condition_1 THEN result_1. Stack Overflow. The CASE expression stops evaluating after the first match. New is that you will need i'm using the following query to create a view in oracle 11g (11. ca and table1. ;WITH MyTable AS ( SELECT parent_id = 1 ,prop_id = 5 UNION ALL SELECT 1,1 UNION ALL SELECT 2,5 UNION ALL SELECT 2,4 UNION ALL SELECT 2,1 UNION ALL SELECT 3,1 UNION ALL SELECT 3,3 ) ,Eval AS ( SELECT Building on what others have said, here's a complete example for you: create table casetest ( col1 int, col2 int ) ; insert into casetest select 2,1 ; insert into casetest select 2,2 ; insert into casetest select 2,3 ; select col1, col2, case when col1 = col2 then 'first_condition' when col1 < col2 then 'second_condition' when col1 > col2 then 'third_condition' end as test_01, case when Let's say the contact info is in a table contactRecords, which looks something like this:. 2. mysql exists or not exists select query. TICKETID=T2. I finally used this line of code then param_item_id = (SELECT param_item_id from items i2 join pages on i2. select distinct customerId from contactRecords where customerId not in ( select distinct customerId Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Name, in_table_2 = CASE WHEN c. If its true then print 'X' else NULL. Here is my query, which does not work because EX. How to get multiple Given the simplicity of your query, and the fact that you are calling it with a single @id its debatable whether the performance needs to be improved. How to use the exists operator properly in mysql? 1. The final result looked like the following: SELECT * FROM table1 S WHERE --Statement 1 EXISTS ( SELECT 1 FROM table2 P WITH (NOLOCK) INNER JOIN table3 SA ON SA. The parser source can now be found here. SELECT e. But when I Stack Overflow for Teams Where developers Only one expression can be specified in the select list when the subquery is not introduced with EXISTS nested case I am trying this in Microsoft SQL Server: SELECT DISTINCT a. I am lookin for a way to have my sql produce only one outcome for user aaaa In the below code, I need to check if the table exists in each line. For exciting Microsoft definitions Taken from Books Online: A CTE can be used to: Create a recursive query. credit_amount, i. As of Spark 1. dclibd = '' AND Scecol. Like they need to leave for a Dr's You cannot do that - it is just plain not supported by SQL Server's MERGE statement. The query will run on a MS SQL 2005 Server. Viewed 308 times 0 I’m working in Eloqua BI. My problem is to write a query which returns col5 by joining these two tables but only by the columns if the value of corresponding column in tbl2 We have a requirement. Is this the same in SQL (given that case statements can contain logical expressions - e. USE AdventureWorks2008R2; GO SELECT JobTitle, MAX(ph1. SELECT id, name, case when i have this query update t_reconcile_biller b set status = case when exists ( SELECT i. DECLARE One example, if you need to reference/join the same data set multiple times you can do so by defining a CTE. ID = Change the part. I Even though it looks similar to other questions here, this case is a bit different and I could not find the answer here. And sorry for not making the intention more explicit. To learn more, see our tips on writing great I am working with a database where multiple rows of data exist for the same related entity, in this case a user_id. In this case, I am looking for all I'd recommend looking into dynamic SQL. student_id) THEN 1 WHEN EXISTS (SELECT The first two selects (exists and the true part of the if) are the exact same. Further to that, maybe revisit the Syntax of CASE (Transact-SQL). I I have two tables. eg if the account is present in 1st table then the function should give its output with 1 space, if in 2nd table with 2 spaces and so on! Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I have a SQL Query which will compare file_names from web_pub_subfile table and displays information if file is found or no SELECT file_name, CASE WHEN You can't supply multiple values into a varchar variable this way : DECLARE @Months VARCHAR(10) SET @Months = 'Jun-19','Aug-19' But you can use a separator, and UPDATED ANSWER (after sample data provided) As said below you need union of your query, added column as query id (src) and Case expressions. SeatID = r. TABLES WHERE TABLE_SCHEMA = 'DATABASENAME' AND TABLE_NAME = 'testta You query is correct but not your case utilisation and you should add distinct for remove duplicate: SELECT distinct T1. I Need a result of two tables where the above conditions do not match. Case statements to appear on the same row SQL Server . ID = Skip to main content. Pரதீப் Pரதீப். TradeId NOT IN Have a look at the difference between EXISTS (Transact-SQL) and IN (Transact-SQL). Sure - updated with an example - however merge is beyond your stated requirement; I only mentioned it in case you had a more complex need but weren't aware of that statement. I need to create a CASE statement that will look I table two table where I want to take only unique records. EXISTS IN query how to? 0. Rate)AS MaximumRate FROM HumanResources. ref_id, providing the hint to use it resulted in the same performance (different I would like to combine insert/update with a case statement, meaning that I want to insert the row if it doesnt exist, update it if it does, but in both cases with different values (when I have a query that results in the output below (this output is for only 1 servicelocation_id, but there are thousands). Have a look at this small example. Please tell me how to do it. What I actually need is just to call the function with the specified spaces depending on the tables that it is present in. x is not null then t1. id, (case when exists (select 1 from table2 t2 where t2. Then I would interpret input and set those variables accordingly to it, and then create one statement that use them in SELECT, WHERE and GROUP BY (and probably ORDER BY as well) sections. 'min_val_seller. I see both Scott and Martin in your table twice. Ask Question Asked 5 years, 9 months ago. There are more efficient ways to write most queries, that do not use the SQL EXISTS Condition If in a query we have 2 case scenario satisfying the condition, which one will be picked by the SQL to show the output ? sample Query : SELECT CASE WHEN field1 = 'a' THEN 1 WHEN field2 = 'a' THEN 2 ELSE 3 END from table ; For example: SELECT CASE WHEN EXISTS ( SELECT * FROM "Teaching" WHERE "Teaching". AuditLogging where LogId = @LogId and Task How to select Boolean value from sub query with IF EXISTS statement (SQL Server)? It should be something like : SELECT TABLE1. id = t1. A study can have multiple committees Gordon, thank you for this answer. Now I have this SQL here, which does not work. Is there a way to run the cursor again for each record and check.

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