postgres nullif
COALESCE · 9.17.3. NULLIF · 9.17.4. GREATEST and LEAST. This section describes the SQL -compliant conditional expressions available in PostgreSQL. ,The NULLIF function returns NULL if and only if value1 and value2 are equal. Otherwise it returns value1. This can be used to perform the inverse operation of ...
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 postgres nullif 相關參考資料
Documentation: 10: 9.17. Conditional Expressions - PostgreSQL
COALESCE · 9.17.3. NULLIF · 9.17.4. GREATEST and LEAST. This section describes the SQL -compliant conditional expressions available in PostgreSQL. https://www.postgresql.org Documentation: 12: 9.17. Conditional Expressions - PostgreSQL
COALESCE · 9.17.3. NULLIF · 9.17.4. GREATEST and LEAST. This section describes the SQL -compliant conditional expressions available in PostgreSQL. https://www.postgresql.org Documentation: 7.1: Conditional Expressions - PostgreSQL
The NULLIF function returns NULL if and only if value1 and value2 are equal. Otherwise it returns value1. This can be used to perform the inverse operation of ... https://www.postgresql.org Documentation: 8.4: Conditional Expressions - PostgreSQL
NULLIF. NULLIF (value1, value2). The NULLIF function returns a null value if value1 equals value2; otherwise it returns value1. This can be used to perform the ... https://www.postgresql.org Documentation: 9.1: Conditional Expressions - PostgreSQL
NULLIF. NULLIF (value1, value2). The NULLIF function returns a null value if value1 equals value2; otherwise it returns value1. This can be used to perform the ... https://www.postgresql.org Documentation: 9.2: Conditional Expressions - PostgreSQL
NULLIF. NULLIF (value1, value2). The NULLIF function returns a null value if value1 equals value2; otherwise it returns value1. This can be used to perform the ... https://www.postgresql.org Documentation: 9.5: Conditional Expressions - PostgreSQL
NULLIF. NULLIF (value1, value2). The NULLIF function returns a null value if value1 equals value2; otherwise it returns value1. This can be used to perform the ... https://www.postgresql.org PostgreSQL NULLIF function - PostgreSQL Tutorial
This tutorial shows you how to apply the PostgreSQL NULLIF function to substitute the null values for displaying data and preventing division by zero error. http://www.postgresqltutorial. 條件資料表達式
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。 ... 當且僅當 value1 和 value2 相等時，NULLIF 才返回NULL。 否則它返回value1。 http://twpug.net |