SELECT ... INTO的EXECUTE未实现

Question

我试图在PostrgeSQL中运行此函数:

CREATE OR REPLACE FUNCTION create_partition_and_insert()
RETURNS trigger AS
$BODY$
DECLARE
partition VARCHAR(25);
_date text;
BEGIN
EXECUTE 'SELECT REPLACE(' || quote_literal(NEW.date) || ',''-'',''_'') into _date';
partition := TG_RELNAME || '_' || _date || ‘p’;
IF NOT EXISTS(SELECT relname FROM pg_class WHERE relname=partition) THEN
RAISE NOTICE 'A partition has been created %',partition;
EXECUTE 'CREATE TABLE ' || partition || ' (check (date = ''' || NEW.date || ''')) INHERITS (' || TG_RELNAME || ');';
END IF;
EXECUTE 'INSERT INTO ' || partition || ' SELECT(' || TG_RELNAME || ' ' || quote_literal(NEW) || ').*;';
RETURN NULL;
END;
$BODY$
LANGUAGE plpgsql;

但是在运行时我得到这个错误:

ERROR:  EXECUTE of SELECT ... INTO is not implemented
HINT:  You might want to use EXECUTE ... INTO or EXECUTE CREATE TABLE ... AS instead.
CONTEXT:  PL/pgSQL function create_partition_and_insert() line 6 at EXECUTE statement

我不知道为什么会这样,在线提供的解决方案都没有在这里帮助我.

Answer 1

代替

execute 'select 1 into i'    -- error

你应该使用

execute 'select 1' into i