PostgreSQL执行动态SQL返回多个结果集
PostgreSQL执行动态SQL返回多个结果集
废话少说直接上代码
创建存储
CREATE OR REPLACE FUNCTION test(ref1 refcursor, ref2 refcursor,aa varchar)
RETURNS SETOF refcursor AS $BODY$
DECLARE
sqlString varchar(4000) = ‘’; --查询sql
countSqlString varchar(4000) = ‘’; --统计sql
BEGIN
– IF(aa= ‘*’) THEN
– Begin
– SqlString := ‘’; – 拼接条件
– End;
– ELSE
– Begin
– SqlString := ‘’;
– End;
– END IF;
– IF ends_with IS NOT NULL THEN
– sql := sql || ‘’; --拼接sql
– END IF;
SqlString := ‘SELECT * FROM act_ge_property WHERE value_=’’’||aa||’’’ limit 10 OFFSET 0’;
countSqlString := ‘SELECT COUNT(1) FROM act_ge_property WHERE value_=’’’||aa||’’’ limit 10 OFFSET 0’;
– EXECUTE(SqlString);
– EXECUTE(countSqlString);
– RETURN QUERY EXECUTE SqlString;
– 打印SQL
– raise notice ‘sql=>%’,SqlString;
open $1 FOR EXECUTE(SqlString);
RETURN NEXT $1;
open $2 FOR EXECUTE(countSqlString);
RETURN NEXT $2;
RETURN;
END;
$BODY$LANGUAGE plpgsql VOLATILE
COST 100
ROWS 1000
执行查询
BEGIN;
SELECT test(‘a’,‘b’,‘1’);
FETCH ALL in “a”;
FETCH ALL in “b”;
COMMIT;