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我正在使用Spring-jdbc NamedParameterJdbcTemplate和mysql-connector-j,并且我在几乎每一个时间都会发出大量的“额外”SQL声明全部看起来像"SHOW FULL COLUMNS FROM ..."
。在MySQL连接器中生成“SHOW FULL COLUMNS FROM ...”查询的数量/ j
这里是一片MySQL的日志,显示我的查询,然后很多,我没有发出查询:
Query SELECT p.*, t.textdata descr, ... from parts p, string t where .....
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`parts`
Query SHOW FULL COLUMNS FROM `mydb`.`strings`
Query SHOW FULL COLUMNS FROM `mydb`.`strings`
这究竟是为什么?我如何阻止它?