Command:CREATEPROCEDURE Description:defineanewprocedure Syntax: CREATE[ORREPLACE]PROCEDURE name([[argmode][argname]argtype[{DEFAULT|=}default_expr][,...]]) {LANGUAGElang_name |TRANSFORM{FORTYPEtype_name}[,...] |
PostgreSQL , CREATE PROCEDURE , CALL , 增强 , 11 背景 PostgreSQL一直以来都是通过create function来创建函数和存储过程(return void),通过select或者perform(plpgsql内部调用函数)来调用函数。 通过inline code来模拟类似procedure的用法: dolanguageplpgsql $$declare-- ...begin-- ...end; $$...
postgres=# \help SELECT Command: SELECT Description: retrieve rows from a table or view Syntax: [ WITH [ RECURSIVE ] with_query [, ...] ] SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ] [ * | expression [ [ AS ] output_name ] [, ...] ] [ FROM from_item [,...
CREATE TABLESPACE 定义一个新的表空间。 CREATE TABLESPACE tablespace_name [ OWNER username ] LOCATION 'directory' CREATE TRIGGER 定义一个新的触发器。 CREATE TRIGGER name { BEFORE | AFTER } { event [ OR ... ] } ON table [ FOR [ EACH ] { ROW | STATEMENT } ] EXECUTE PROCEDURE func_name...
Command:CREATETRIGGERDescription:define anewtriggerSyntax:CREATE[CONSTRAINT]TRIGGERname{BEFORE|AFTER|INSTEADOF}{event[OR...]}ONtable_name[FROMreferenced_table_name]{NOTDEFERRABLE|[DEFERRABLE]{INITIALLYIMMEDIATE|INITIALLYDEFERRED}}[FOR[EACH]{ROW|STATEMENT}][WHEN(condition)]EXECUTEPROCEDUREfunction_name(argume...
走这里解析非sqlstate xxx格式的异常例如 division_by_zero } :exception_label_map[i]里面找division_by_zero,匹配了就构造一个PLpgSQL_condition返回 else { PLpgSQL_condition *new; char *sqlstatestr; /* next token should be a string literal */ if (yylex() != SCONST) yyerror("syntax error");...
效果:当插入一条新记录时,create_at 字段会自动设置为当前时间,update_at 字段保持为空或可以初始化为 NULL。当更新一条记录时,update_at 字段会自动设置为当前时间。遇到问题:1.在创建触发器调用函数时使用 EXECUTE PROCEDURE 出现报错:SQL 错误[42601]: ERROR: syntax error at or near “FUNCTION” Position:...
Before you use a variable we must declare it in the proper section, using the following syntax:CREATE FUNCTION function_name(argument1 type,argument2 type) RETURNS type AS DECLARE variable_name data_type [:= value]; BEGIN staments; END; LANGUAGE language_name; ...
The full SQL type syntax is allowed for declaring a function's arguments and return value. However, parenthesized type modifiers (e.g., the precision field for type numeric) are discarded by CREATE FUNCTION. Thus for example CREATE FUNCTION foo (varchar(10...
在Syntax页,还可指定日期、时间的格式等。在Preview页可查看Database Profile设置对应的PowerScript写法。 Oracle存储过程的使用 归纳起来PB6.0中调用Oracle存储过程有以下四种方法。 方法一:以关键字RPCFUNC声明存储过程; 方法二:以DECLARE PROCEDURE语句声明存储过程; ...