本文介绍了如何在 mariadb 或 mysql 中创建临时表?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
现在,我正在将 mssql 迁移到 mariadb(mysql).mssql有with子句(with A as ()),但是mysql没有with子句.所以我使用创建临时表",但出现了一些错误.
Now, I'm migrating mssql to mariadb(mysql). Mssql has with clause(with A as ()), but mysql has not with clause. So I'm using "create temporary table", but some error occurred.
例子,
CREATE TEMPORARY TABLE TMP(
SELECT CAST(DATE_FORMAT(NOW(), '%Y-%m-%d %T.%f') AS CHAR(19)) AS REGDT
);
这是错误代码
MySQL 数据库错误:截断不正确的 CHAR(19) 值:'2016-06-27 10:34:34.000000'
MySQL Database Error: Truncated incorrect CHAR(19) value: '2016-06-27 10:34:34.000000'
怎么了?
这是我的查询.
CREATE TEMPORARY TABLE TMP(
SELECT DEPTCODE, DEPTNAME, USEYN, HIGHDEPTCODE,
CAST(DATE_FORMAT(REGDT, '%Y-%m-%d %T.%f') AS CHAR(19)) AS REGDT,
0 AS LEV, CAST(DEPTCODE AS CHAR(255)) AS SORT, DEPTORDER
FROM TBDEPARTMENT
WHERE DEPTCODE = '1000');
推荐答案
CHAR(19) 太小,无法以毫秒为单位存储整个日期.
CHAR(19) is too small to store your whole date with milliseconds.
改用 CHAR(26):
Use CHAR(26) instead:
CREATE TEMPORARY TABLE TMP(
SELECT CAST(DATE_FORMAT(NOW(), '%Y-%m-%d %T.%f') AS CHAR(26)) AS REGDT
);
或删除毫秒:
CREATE TEMPORARY TABLE TMP(
SELECT CAST(DATE_FORMAT(NOW(), '%Y-%m-%d %T') AS CHAR(19)) AS REGDT
);
您也可以使用 DATETIME 类型而不是字符串.
You could also use a DATETIME type instead of a String.
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