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mysql 1093 - You can't specify target table 'user' for update in FROM clause
UPDATE USERSET user_name = 'zhangsan'WHERE user_name = ( SELECT u1.user_name FROM USER u1 WHERE u1.id = '11' );执行sql报错：[Err] 1...原创 2019-02-14 17:13:07 · 1019 阅读 · 0 评论 -
连接Mysql报错java.sql.SQLException: Unknown system variable 'query_cache_size'
错误信息如下：java.sql.SQLException: Unknown system variable 'query_cache_size' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.j...原创 2019-02-28 13:56:12 · 3871 阅读 · 0 评论 -
ava.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized 原因 解决 方案
报错信息如下：java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTime...原创 2019-03-09 12:29:01 · 1538 阅读 · 0 评论