postgresql trigger return
Trigger functions invoked by per-statement triggers should always return NULL . Trigger functions invoked by per-row triggers can return a table row (a ... ,A trigger function is created with the CREATE FUNCTION command, declaring it as a function with no arguments and a return type of trigger. ,PostgreSQL requires that a function that is to be called as a trigger must be declared as a function with no arguments and a return type of trigger . The ... ,The same trigger function can be used for multiple triggers. Trigger functions return a table row (a value of type HeapTuple) to the calling executor. A ... ,2023年1月24日 — A “trigger” is defined as any event that sets a course of action in a motion. In PostgreSQL, if you want to take action on specific database events, such as ... ,I am having a problem with a trigger. I created a trigger and a function for when performing an INSERT update a field in the same table. Is returning: ,Trigger function: A trigger function takes no parameters, can not work without return and the return type must be TRIGGER . It can not call ... ,2023年8月8日 — PostgreSQL triggers are specialized user-defined functions that are activated automatically when a specified event related to a table occurs. ,Here, I describe what the return value of a PostgreSQL row level trigger function means and suggest a useful code simplification for such functions. ,Trigger functions invoked by per-statement triggers should always return NULL. Trigger functions invoked by per-row triggers can return a table row.
| 相關軟體 PostgreSQL 資訊 | |
|---|---|
 postgresql trigger return 相關參考資料
Documentation: 17: 37.1. Overview of Trigger Behavior
Trigger functions invoked by per-statement triggers should always return NULL . Trigger functions invoked by per-row triggers can return a table row (a ... https://www.postgresql.org Documentation: 17: 41.10. Trigger Functions
A trigger function is created with the CREATE FUNCTION command, declaring it as a function with no arguments and a return type of trigger. https://www.postgresql.org Documentation: 17: 42.6. Trigger Functions in PLTcl
PostgreSQL requires that a function that is to be called as a trigger must be declared as a function with no arguments and a return type of trigger . The ... https://www.postgresql.org Documentation: 7.4: Triggers
The same trigger function can be used for multiple triggers. Trigger functions return a table row (a value of type HeapTuple) to the calling executor. A ... https://www.postgresql.org Everything you need to know about PostgreSQL triggers
2023年1月24日 — A “trigger” is defined as any event that sets a course of action in a motion. In PostgreSQL, if you want to take action on specific database events, such as ... https://www.enterprisedb.com Postgresql function return trigger
I am having a problem with a trigger. I created a trigger and a function for when performing an INSERT update a field in the same table. Is returning: https://stackoverflow.com PostgreSQL function vs trigger function vs procedure and ...
Trigger function: A trigger function takes no parameters, can not work without return and the return type must be TRIGGER . It can not call ... https://medium.com PostgreSQL Trigger Fundamentals: Examples & Syntax
2023年8月8日 — PostgreSQL triggers are specialized user-defined functions that are activated automatically when a specified event related to a table occurs. https://estuary.dev What to return from a PostgreSQL row level trigger?
Here, I describe what the return value of a PostgreSQL row level trigger function means and suggest a useful code simplification for such functions. https://www.cybertec-postgresq When we need return value from trigger procedure?
Trigger functions invoked by per-statement triggers should always return NULL. Trigger functions invoked by per-row triggers can return a table row. https://stackoverflow.com |