CREATE DATABASE 数据库名;
。CREATE DATABASE 数据库名;
。sql,INSERT INTO table_name (column1, column2) VALUES (value1, value2);,
``SOURCE
命令,格式为:SOURCE /path/to/your/file.sql;
。确保文件路径正确且有适当权限。sql,SELECT username FROM users WHERE id = 1;,
``CAST
或 CONVERT
函数进行数据类型转换。将字符串转换为整数:,,``sql,SELECT CAST('123' AS UNSIGNED);,-或者,SELECT CONVERT('123', UNSIGNED);,
`,,将日期转换为字符串:,,
`sql,SELECT CAST(NOW() AS CHAR);,-或者,SELECT CONVERT(NOW(), CHAR);,
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