摘要:
今天用到GROUP BY 语句查询时com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains错误。 经执 阅读全文
摘要:
1.linux安装redis、并启动 2.java 需要引入commons-pool-1.6.jar及jedis-2.1.0.jar: 发现会报DENIED Redis is running in protected mode because protected mode is enabled…UI 阅读全文