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Can anyone point out how to check if a select query returns non empty result set? For example I have next query: SELECT * FROM service s WHERE s.service_id = ?; Should I do something like next: ISNULL(SELECT * FROM service s WHERE s.service_id = ?) to test if result set is not empty?
How do I check if a column is empty or null using a SQL select statement? For instance, if I want to check: select * from UserProfile WHERE PropertydefinitionID in (40, 53) and PropertyValue is null or empty
28 maj 2024 · In this article, we explored different options for executing IF-THEN logic in a SQL SELECT statement. These options include using CASE , IIF() , and CHOOSE() . Furthermore, if we want a query that’s used in almost every dialect, we must choose the CASE statement.
31 sty 2018 · My subquery is returning one row and hence compared to 1. This leads my CASE WHEN to produce the 1 output. Even if I set the subquery to return no rows like the sample below, the CASE statement returns the 0 result: SELECT. CASE WHEN (SELECT 1 WHERE (1=0)) = 1 THEN 1 ELSE 0 END.
30 paź 2023 · The SQL IF statement in SELECT queries is utilized to introduce conditional logic, allowing for more dynamic and flexible data retrieval. Essentially, it lets you specify conditions to dictate which data should be fetched or how it should be displayed.
3 sty 2013 · I want SQL to return blank row even if the condition does not match. This may be useful for certain ORMs which always expect a single row as a result of a query. Say, we have a query like that: SELECT * FROM mytable WHERE id = 42 and want it to return a single row (possibly consisting of NULL values) no matter what.
5 lis 2012 · In this video, I show you how to filter for SQL Null or Empty String in SQL Server 2012. I will also show you a trick to make it easier to filter for both.
