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PHP - Manual: TableDelete::limit (官方文档)

2021-01-15

TableDelete::limit

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TableDelete::limitLimit deleted rows

说明

public mysql_xdevapi\TableDelete::limit ( integer $rows ) : mysql_xdevapi\TableDelete

Sets the maximum number of records or documents to delete.

参数

rows

The maximum number of records or documents to delete.

返回值

TableDelete object.

范例

Example #1 mysql_xdevapi\TableDelete::limit() example

<?php
$session 
mysql_xdevapi\getSession("mysqlx://user:password@localhost");

$session->sql("DROP DATABASE IF EXISTS addressbook")->execute();
$session->sql("CREATE DATABASE addressbook")->execute();
$session->sql("CREATE TABLE addressbook.names(name text, age int)")->execute();
$session->sql("INSERT INTO addressbook.names values ('John', 42), ('Sam', 33)")->execute();

$schema $session->getSchema("addressbook");
$table  $schema->getTable("names");

$table->delete()
  ->
where("name = :name")
  ->
bind(['name' => 'John'])
  ->
orderby("age DESC")
  ->
limit(1)
  ->
execute();

?>
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官方地址:https://www.php.net/manual/en/mysql-xdevapi-tabledelete.limit.php

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