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15 wrz 2008 · Once you figure out how it works, you can convert three results to two results by deciding the behavior of null. E.g. this would treat null as not saleable: SELECT CASE WHEN obsolete = 'N' OR instock = 'Y' THEN 'true' ELSE 'false' -- either false or null END AS saleable. Share.
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.
23 lis 2012 · Here are two ways "IF" Or "CASE". SELECT IF(COLUMN_NAME = "VALUE", "VALUE_1", "VALUE_2") AS COLUMN_NAME. FROM TABLE_NAME; OR. SELECT (CASE WHEN COLUMN_NAME = "VALUE" THEN 'VALUE_1' ELSE 'VALUE_2' END) AS COLUMN_NAME. FROM TABLE_NAME; edited Apr 6, 2020 at 11:46. Kennedy Maikuma.
30 paź 2023 · Dive deep and tame the powerful beast of sql if statement in select, mastering the art of dynamic and conditional SQL queries with ease and precision.
26 wrz 2023 · The IF...THEN statement in SQL is often used in conjunction with the CASE expression. The basic syntax goes like this: SELECT . column1, column2, ... CASE WHEN condition1 THEN result1. WHEN condition2 THEN result2. ... ELSE else_result. END AS alias_name. FROM . your_table; column1, column2, etc.:
20 gru 2013 · SELECT CASE 1 WHEN 2 THEN 'Prawda' END. Czasami zachodzi potrzeba zwrócenia czegoś innego w przypadku niezgodności warunku. W takim przypadku, korzystając z bardziej standardowego języka zapytań piszemy coś na kształt IF {A} THEN {B} ELSE {C}.
3 wrz 2024 · Imposes conditions on the execution of a Transact-SQL statement. The Transact-SQL statement that follows an IF keyword and its condition is executed if the condition is satisfied: the Boolean expression returns TRUE.
