清空mysql所有表数据库表

SET FOREIGN_KEY_CHECKS=0;

-- 获取所有表名
SELECT CONCAT('TRUNCATE TABLE ', table_name, ';') 
INTO OUTFILE '/tmp/a.txt'
FROM information_schema.tables 
WHERE table_schema = 'your_database_name';

-- 执行删除操作
SET @sql = NULL;
SELECT GROUP_CONCAT(@sql := CONCAT('TRUNCATE TABLE ', table_name)) 
INTO @sql 
FROM (SELECT table_name FROM information_schema.tables WHERE table_schema = 'your_database_name') AS t;

PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SET FOREIGN_KEY_CHECKS=1;

<?php
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database_name";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 获取所有表名
$result = $conn->query("SHOW TABLES");
while ($row = $result->fetch_array()) {
    $table = $row[0];
    $conn->query("TRUNCATE TABLE `$table`");
}

echo "所有表已清空";

$conn->close();
?>

mysql -u your_username -p your_database_name -e "SET FOREIGN_KEY_CHECKS=0; SHOW TABLES; SET @sql = NULL; SELECT GROUP_CONCAT(@sql := CONCAT('TRUNCATE TABLE ', table_name)) INTO @sql FROM (SELECT table_name FROM information_schema.tables WHERE table_schema = 'your_database_name') AS t; PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt; SET FOREIGN_KEY_CHECKS=1;"