--如果存在该存储过程就删除dropfunctionifexistsfunction_test3();--replace之前先调用了drop是因为如果返回值不同是不能直接替换的createorreplacefunctionfunction_test3()returnsvoidas--标记开始和起始位置,用$$和$$也可以,主要是查询存储过程的结果是用的$BODY$$BODY$--这里可以先定义一些变量BEGINFORvar_aIN1...
Insert INTO t2 VALUES (c_in); COMMIT; RETURN c_in; END p; / DECLARE BEGIN /* Open up a cursor for loop, also selecting * the "p" function which will write rows to * t2 for every row fetched from t1. */ FOR crec IN (Select tcol, p(tcol) FROM t1) LOOP -- Break out of...
CREATE[ORREPLACE]FUNCTIONname([[argmode][argname]argtype[{DEFAULT|=}default_expr][,...]])[RETURNSrettype|RETURNSTABLE(column_name column_type[,...])]{LANGUAGElang_name|TRANSFORM{FORTYPEtype_name}[,...]|WINDOW|IMMUTABLE|STABLE|VOLATILE|[NOT]LEAKPROOF|CALLEDONNULLINPUT|RETURNSNULLONNULLINPUT|...
because it is being used by active queriesinthis session 或 ERROR: cannot ALTER TABLE"tab" because it is being used by active queriesinthis session 触发器(实施子表创建和 NOTIFY) CREATE FUNCTION part_trig()RETURNS trigger LANGUAGEplpgsql AS $$ BEGIN BEGIN /* try to create a tableforthe new...
CREATE OR REPLACE FUNCTION skytf.func_test_result_single ( in_id integer) RETURNS SETOF varcharas $$ DECLARE v_name varchar; BEGIN for v_name in ( (select name from test_result1 where id = in_id) union (select name from test_result2 where id = in_id) )loop ...
1)、LOOP 2)、EXIT 3)、CONTINUE 4)、WHILE 5)、FOR (整数变种) 3、异常捕获 用PL/pgSQL写PostgreSQL的存储过程 一、存储过程结构: create or replace function 过程名(参数名 参数类型,…..) returns 返回值类型 as $body$ //声明变量 Declare ...
BEGINFOR rec IN SELECT table_name, column_name,data_typeFROM information_schema.columnswhere table_schema = '要处理的模式名'AND data_type = 'timestamp with time zone'LOOPEXECUTE 'ALTER TABLE ' || rec.table_name || ' ALTER COLUMN ' || rec.column_name || ' TYPE timestamp';END LOOP;...
for i in 1 .. _wordCount - 1 loop _sentence = _sentence || ' ' || lipsum_word(); end loop; if _useFinalDot then _sentence = _sentence || '.'; end if; return _sentence; end $$; 代码是有效的,但是for-in循环中的lipsum_word()调用工作不正常,因为返回的值类似于 ...
1..a2 LOOPinsert into user1 values(ii,a1);end loop;end;LANGUAGE plpgsql;select aa1('a123',10)orcreate or replace function aa2(a1 char(10),a2 bigint) returns SETOF user1 ASdeclare ii integer;beginII:=1;FOR ii IN 1..a2 LOOPinsert into user1 values(ii,a1);end loop;...
有各种服务器参数会影响 Azure Cosmos DB for PostgreSQL 的行为,无论是来自标准 PostgreSQL 还是特定于 Azure Cosmos DB for PostgreSQL。 可以在 Azure 门户中为群集设置这些参数。 在“设置”类别下,选择“工作器节点参数”或“协调器节点参数” 。 在这些页面中可为所有工作器节点设置参数,或者只是为协调器节点...