postgresql if else example
The IF statement is part of the default procedural language PL/pgSQL. You need to create a function or execute an ad-hoc statement with the ...,本節描述在PostgreSQL 裡可以用的SQL兼容的條件資料表達式。 ... 如果沒有WHEN condition 為真，那麼 case 資料表達式的結果就是在ELSE 子句裡的值。 ,If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... ,If the ELSE clause is omitted and no condition matches, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... ,If the ELSE clause is omitted and no condition matches, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... ,If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... ,If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... ,PL/pgSQL IF THEN ELSIF THEN ELSE statement else-statement; ... For example, if the condition-1 , condition-2 , etc., is true then the corresponding statement: if-statement , elseif-statement-2 , etc., will execute. In case one condition is true, PostgreSQ,If you declared the function to return void, a RETURN statement can be used to exit the function early; but do not write an expression following RETURN. ,If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ...
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 postgresql if else example 相關參考資料
PostgreSQL IF statement - Stack Overflow
The IF statement is part of the default procedural language PL/pgSQL. You need to create a function or execute an ad-hoc statement with the ... https://stackoverflow.com 條件資料表達式
本節描述在PostgreSQL 裡可以用的SQL兼容的條件資料表達式。 ... 如果沒有WHEN condition 為真，那麼 case 資料表達式的結果就是在ELSE 子句裡的值。 http://twpug.net Documentation: 8.4: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org Documentation: 7.4: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition matches, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org Documentation: 8.2: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition matches, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org Documentation: 9.2: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org Documentation: 9.4: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org PLpgSQL IF Statement - PostgreSQL Tutorial
PL/pgSQL IF THEN ELSIF THEN ELSE statement else-statement; ... For example, if the condition-1 , condition-2 , etc., is true then the corresponding statement: if-statement , elseif-statement-2 , etc.,... http://www.postgresqltutorial. Documentation: 9.1: Control Structures - PostgreSQL
If you declared the function to return void, a RETURN statement can be used to exit the function early; but do not write an expression following RETURN. https://www.postgresql.org Documentation: 9.1: Conditional Expressions - PostgreSQL
If the ELSE clause is omitted and no condition is true, the result is null. An example: SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' ... https://www.postgresql.org |