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How to use if exists in SQL Server?
DECLARE @Query NVARCHAR (1000) = ‘SELECT * FROM [dbo]. [Mytable]’, @rowcnt INT EXEC Sp_executesql @query SELECT @rowcnt = @@ROWCOUNT IF @rowcnt > 0 BEGIN PRINT ‘row present’ END I know this answer is too late. but, I’m leaving this here to help someone else to use IF EXISTS with a dynamic query.
How to pass a table variable to SP _ ExecuteSQL?
*/ SELECT * INTO #workingData FROM @workingData DECLARE @sql NVARCHAR (MAX) SET @sql = ‘SELECT * FROM #workingData’ EXEC sp_executesql @sql There must be a better way to pass this temporary resultset into sp_executesql!? While this may not directly answer your question, it should solve your issue overall.
How to update rows in a table in SQL?
Third, specify which rows to update in the WHERE clause. The UPDATE statement affects one or more rows in a table based on the condition in the WHERE clause. For example, if the WHERE clause contains a primary key expression, the UPDATE statement changes one row only.
How to use if exists in dynamic query?
[Mytable]’, @rowcnt INT EXEC Sp_executesql @query SELECT @rowcnt = @@ROWCOUNT IF @rowcnt > 0 BEGIN PRINT ‘row present’ END I know this answer is too late. but, I’m leaving this here to help someone else to use IF EXISTS with a dynamic query. This is how you should do it with dynamic queries.
How to check if column exists in subquery?
For an actual subquery, you could approximate the same thing by checking to see if the subquery returned something with that column name. One method for this is to run the query: select top 0 * into #temp from ( ) s and then check the columns in #temp.
Can a conditional query be performed in a case expression?
If you can do it, it’ll probably be with CASE expressions! One last edit: in any real world example, I’d probably do the conditional bit in my application, and just hand off to SQL (or to an ORM which would generate my SQL) once I’d decided what to search for. Thanks for contributing an answer to Stack Overflow!