'kim');insertintot1values(30,'mun');--返回表的多行数据createorreplacefunctiongetallrow()returnssetof t1asdeclareoner t1%rowtype;beginforonerinselect*fromt1whereid>0loop-- 此处可以执行一些其他语句returnnext oner;-- 返回当前查询行endloop;return;end;--测试结果:test-#/getallrow...
SQL 标准支持以返回表作为结果的函数;这种函数称为表函数( table function )。请考虑下图中定义的函数。该函数返回一个包含特定系的所有教师的表。请注意,当引用函数的参数时需要给它加上函数名作为前缀( instructor_of.dept_name )。 此函数可以按如下方式在查询中使用: AI检测代码解析 select * from table(inst...
CREATEORREPLACEFUNCTIONfuncname ( in_idinteger)RETURNSSETOFvarcharas$$DECLAREv_namevarchar;BEGINforv_namein( (selectnamefromtest_result1whereid=in_id)union(selectnamefromtest_result2whereid=in_id) ) loopRETURNNEXTv_name;endloop;return;END; $$ LANGUAGE PLPGSQL; 注意 1. 循环外还有个 return 2...
SQL Copy DECLARE @result AS INT; EXECUTE @result = my_proc; GO Return codes are commonly used in control-of-flow blocks within procedures to set the return code value for each possible error situation. You can use the @@ERROR function after a Transact-SQL statement to detect whether an...
DROP TABLE foo cascade; CREATE TABLE foo (fooid INT, foosubid INT, fooname TEXT); INSERT INTO foo VALUES (1, 2, 'three'); INSERT INTO foo VALUES (4, 5, 'six'); CREATE OR REPLACE FUNCTION f5() RETURNS SETOF record AS $BODY$ DECLARE r record; BEGIN FOR r IN SELECT * FROM ...
SQL DECLARE@resultASINT;EXECUTE@result= my_proc; GO Return codes are commonly used in control-of-flow blocks within procedures to set the return code value for each possible error situation. You can use the@@ERRORfunction after a Transact-SQL statement to detect whether an error occu...
Learn more about the Microsoft.SqlServer.TransactSql.ScriptDom.FunctionReturnType.FunctionReturnType in the Microsoft.SqlServer.TransactSql.ScriptDom namespace.
Sql アセンブリ: Mono.Android.dll 注意事項 Use 'Java.Sql.IDatabaseMetaData.FunctionReturn'. This class will be removed in a future release. パラメーターまたは列が戻り値であることを示します。 C# コピー [Android.Runtime.Register("functionReturn")] [System.Obsolete("Use 'Java.Sql...
FUNCTION”错误错误消息告诉你问题所在--你不能在PROCEDURE中使用RETURN。创建一个FUNCTION（CREATE FUNCTION...
'Return' statement in a Function, Get, or Operator must return a value 'Return' statement in a Sub or a Set cannot return a value 'Return' statement in an 'AddHandler', 'RemoveHandler', or 'RaiseEvent' method cannot return a value 'Return' statements are not valid in the Immediate windo...