Issue While creating function in PostgreSQL "ERROR: syntax error at or near "ROWTYPE""

Question

下面是PL/SQL

中的简单程序

PROCEDURE emp_get_rec (emp_rec IN OUT NOCOPY emp_content%ROWTYPE)
  IS
    v_cnt   NUMBER;
  BEGIN
    SELECT COUNT(*)
    INTO v_cnt
    FROM emp_content
    WHERE emp_id = emp_rec.emp_id;
    IF v_cnt = 1
    THEN
      SELECT * INTO emp_rec
      FROM emp_content
      WHERE emp_id = emp_rec.emp_id;
    END IF;
 END emp_get_rec;

我正在尝试在 PostgreSQL 中转换，

Create or replace function emp_get_rec (emp_rec IN OUT emp_content%ROWTYPE)
AS $BODY$
DECLARE
    v_cnt   NUMBER;
BEGIN

       SELECT COUNT(*)
    INTO v_cnt
    FROM emp_content
    WHERE emp_id = emp_rec.emp_id;
    IF v_cnt = 1
    THEN
      SELECT * INTO emp_rec
      FROM emp_content
      WHERE emp_id = emp_rec.emp_id;
    END IF;
 END;
$BODY$ LANGUAGE 'plpgsql';

我遇到以下错误：

ERROR: syntax error at or near "ROWTYPE"

Answer 1

Documentation says:

Whenever you create a table, a composite type is also automatically created, with the same name as the table, to represent the table's row type.

因此您可以使用 table 名称作为类型名称，在句法上它表示类型：

create or replace function emp_get_rec (emp_rec IN OUT emp_content)

Issue While creating function in PostgreSQL "ERROR: syntax error at or near "ROWTYPE""

Issue While creating function in PostgreSQL "ERROR: syntax error at or near "ROWTYPE""

sql

postgresql

plpgsql