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I'd like to write a SELECT statement that uses just one test to return columns with no value (null, empty, or all spaces). I thought this would work: SELECT column_name from table_name WHERE column_name NOT LIKE '%_%';
15 wrz 2008 · The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. SELECT CAST( CASE WHEN Obsolete = 'N' or InStock = 'Y' THEN 1 ELSE 0 END AS bit) as Saleable, * FROM Product
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.
4 sie 2024 · In this article, we discussed various methods for implementing IF or IF-ELSE logic in an SQL WHERE clause. These methods include using CASE, Boolean Operators, IF () or IIF (), and CHOOSE () or ELT (). Moreover, we can use universal CASE statements to handle multiple different conditions with different outcomes.
2 cze 2023 · The CASE statement allows you to perform an IF-THEN-ELSE check within an SQL statement. It’s good for displaying a value in the SELECT query based on logic that you have defined. As the data for columns can vary from row to row, using a CASE SQL expression can help make your data more readable and useful to the user or to the application.
12 maj 2024 · In MS SQL, we can utilize the CHARINDEX() function to search for a substring’s position: SELECT * FROM Product WHERE CHARINDEX('Milk', description) > 0 OR CHARINDEX('Dark', description) > 0; Like POSITION(), CHARINDEX() returns the 1-based index of the search substring or 0 if it isn’t in the string. 7. Comparison
