postgresql return value
The return value of a function cannot be left undefined. If control ... functions returning a scalar type RETURN 1 + 2; RETURN scalar_var; -- functions returning a ... ,For all other PostgreSQL return types, the returned Python value is converted to a string using the Python builtin str, and the result is passed to the input function of ... ,If the function is not supposed to return a value, specify void as the return type. When there are OUT or INOUT parameters, the RETURNS clause can be omitted. If ... ,Function return values are converted to the declared PostgreSQL return data type as follows: When the PostgreSQL return type is boolean, the return value will be evaluated for truth according to the Python rules. That is, 0 and empty string are false, but,If the last query happens to return no rows at all, the null value will be returned. Alternatively, an SQL function can be declared to return a set, by specifying the ... ,For all other PostgreSQL return types, the returned Python value is converted to a string using the Python built-in str, and the result is passed to the input function of ... ,It can contain column names of the command's target table, or value expressions using those columns. A common shorthand is RETURNING *, which selects all ... ,It can contain column names of the command's target table, or value expressions using those columns. A common shorthand is RETURNING *, which selects all ... , Use execute... into... : BEGIN EXECUTE 'INSERT INTO "dbUpdateLog" (notes) VALUES ($$hello$$) RETURNING "DULid"' INTO retval; ...,RETURN variable_name | value } END; LANGUAGE plpgsql;. Where,. function-name specifies the name of the function. [OR REPLACE] option allows modifying ...
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 postgresql return value 相關參考資料
Documentation: 12: 42.6. Control Structures - PostgreSQL
The return value of a function cannot be left undefined. If control ... functions returning a scalar type RETURN 1 + 2; RETURN scalar_var; -- functions returning a ... https://www.postgresql.org Documentation: 9.0: Data Values - PostgreSQL
For all other PostgreSQL return types, the returned Python value is converted to a string using the Python builtin str, and the result is passed to the input function of ... https://www.postgresql.org Documentation: 9.1: CREATE FUNCTION - PostgreSQL
If the function is not supposed to return a value, specify void as the return type. When there are OUT or INOUT parameters, the RETURNS clause can be omitted. If ... https://www.postgresql.org Documentation: 9.2: Data Values - PostgreSQL
Function return values are converted to the declared PostgreSQL return data type as follows: When the PostgreSQL return type is boolean, the return value will be evaluated for truth according to the P... https://www.postgresql.org Documentation: 9.2: Query Language (SQL ... - PostgreSQL
If the last query happens to return no rows at all, the null value will be returned. Alternatively, an SQL function can be declared to return a set, by specifying the ... https://www.postgresql.org Documentation: 9.3: Data Values - PostgreSQL
For all other PostgreSQL return types, the returned Python value is converted to a string using the Python built-in str, and the result is passed to the input function of ... https://www.postgresql.org Documentation: 9.4: Returning Data From ... - PostgreSQL
It can contain column names of the command's target table, or value expressions using those columns. A common shorthand is RETURNING *, which selects all ... https://www.postgresql.org Documentation: 9.5: Returning Data From ... - PostgreSQL
It can contain column names of the command's target table, or value expressions using those columns. A common shorthand is RETURNING *, which selects all ... https://www.postgresql.org How to return a value inside a postgreSQL PLpgSQL EXECUTE
Use execute... into... : BEGIN EXECUTE 'INSERT INTO "dbUpdateLog" (notes) VALUES ($$hello$$) RETURNING "DULid"' INTO retval; ... https://stackoverflow.com PostgreSQL函數- PostgreSQL教學 - 極客書
RETURN variable_name | value } END; LANGUAGE plpgsql;. Where,. function-name specifies the name of the function. [OR REPLACE] option allows modifying ... http://tw.gitbook.net |