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我正在使用Spring-jdbc NamedParameterJdbcTemplate和mysql-connector-j,並且我在幾乎每一個時間都會發出大量的「額外」SQL聲明全部看起來像"SHOW FULL COLUMNS FROM ..."
。在MySQL連接器中生成「SHOW FULL COLUMNS FROM ...」查詢的數量/ j
這裏是一片MySQL的日誌,顯示我的查詢,然後很多,我沒有發出查詢:
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`
這究竟是爲什麼?我如何阻止它?