DROP SCHEMA tmp CASCADE;
CREATE SCHEMA tmp ;
SET search_path=tmp;
CREATE TABLE primes
(pos SERIAL NOT NULL PRIMARY KEY
, val INTEGER NOT NULL
, CONSTRAINT primes_alt UNIQUE (val)
我正在运行PostgreSQL 9.2.1并且有一个返回3列的plpgsql函数。这就是所谓的(简化): SELECT (my_function(b.input)).*, a.other, b.columns
FROM table_a a
JOIN table_b b ON a.id = b.id
WHERE ...
该功能打印出一条警告消息,我惊讶地发现它打印了3次。它看起来像函数被调