然后再设置外键约束: SET FOREIGN_KEY_CHECKS=1; 2. MySQL 5.1.48 导入 MySQL 5.7.18 时遇到 T FOREIGN_KEY_CHECKS = 0 错误的解决方法 #1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘T FOREIGN...
–ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails You can disable referential integrity checks, and insert a row that violates FOREIGN KEY constraint: -- Do not check referential constraints SET FOREIGN_KEY_CHECKS = 0; -- Now we can insert row INSERT ...
然后再设置外键约束: SET FOREIGN_KEY_CHECKS=1; 2. MySQL 5.1.48 导入 MySQL 5.7.18 时遇到 T FOREIGN_KEY_CHECKS = 0 错误的解决方法 #1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘T FOREIGN...
然后再设置外键约束: SET FOREIGN_KEY_CHECKS=1; 2. MySQL 5.1.48 导入 MySQL 5.7.18 时遇到 T FOREIGN_KEY_CHECKS = 0 错误的解决方法 #1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘T FOREIGN...
I am looking for a way to not alter all table with the 'alter table ... nocheck contraint' and afterwards to set back to check constraint table by table. In MySQL you can set the foreign key checks off for a specific script without alter each table, e.g.: --Create Table script us...
记录表的外键信息,如果表是某一些表的父表,调用Rpl_transaction_write_set_ctx::set_has_related_foreign_keys进行标记;如果表是某一些表的子表,外键列不为NULL,且foreign_key_checks不为0,也会对这样的外键列计算一个hash值。 如果没有添加任何hash值到写集合中,调用Rpl_transaction_write_set_ctx::set_has_...
记录表的外键信息,如果表是某一些表的父表,调用Rpl_transaction_write_set_ctx::set_has_related_foreign_keys进行标记;如果表是某一些表的子表,外键列不为NULL,且foreign_key_checks不为0,也会对这样的外键列计算一个hash值。 如果没有添加任何hash值到写集合中,调用Rpl_transaction_write_set_ctx::set_has_...
[ERR] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '; SET FOREIGN_KEY_CHECKS = 1' at line 1 一般是脚本编码的问题,ultraedit的UTF8编码是UTF8 BOM,UE编辑器调整为UTF8编码格式后,保存的文件...
报错:ERROR 1215 (HY000): Cannot add foreign key constraint 我的应用以前用的mysql数据库,在创建外键约束时,使用的是 ON DELETE SET NULL语法,但是oceanbase数据库不支持“SET NULL”,但是oceanbase文档中提到可以支持“SET DEFAULT”,但是并未执行成功。
参数解释:bool类型,默认全局值为ON。在创建外键的时候,如果设置为ON,则会检查外键的规范性,例如外键不能reference同一张表中的键等。 不建议修改的原因: foreign_key_checks值为ON时,无法通过该参数检查的外键,本身就是不规范的使用方法,建议优化SQL,规范数据库使用。