如何调试PostgreSQL中的触发器递归？

如何在PostgreSQL中确定触发器是递归还是循环有如何使用它的示例吗？

我正在寻找一个如何检查故障原因是否是递归的示例。

您可以在下面的示例中使用

运行此操作将产生

NOTICE:  [bar] TRIGGER DEPTH 1
NOTICE:  [bar] TRIGGER DEPTH 2
ERROR:  duplicate key value violates unique constraint "foo_pkey"
DETAIL:  Key (id)=(42) already exists.
CONTEXT:  SQL statement "INSERT INTO foo VALUES (42)"
PL/pgSQL function bar() line 5 at SQL statement
SQL statement "INSERT INTO foo VALUES (42)"
PL/pgSQL function bar() line 5 at SQL statement

而这将有助于调试情况

NOTICE:  [bar] TRIGGER DEPTH 1
NOTICE:  [bar] TRIGGER DEPTH 2
ERROR:  duplicate key value violates unique constraint "foo_pkey"
DETAIL:  Key (id)=(42) already exists.
CONTEXT:  SQL statement "INSERT INTO foo VALUES (42)"
PL/pgSQL function bar() line 5 at SQL statement
SQL statement "INSERT INTO foo VALUES (42)"
PL/pgSQL function bar() line 5 at SQL statement