72《SQL学习指南（第二版）》常见错误语句

1、主键不唯一：ERROR 1062 (23000) :Duplicate entry '1' for key 'PRIMARY'

2、不存在的外键：ERROR 1052 (23000) :Cannot add or update a child row : a foreign key constraint

3、列值不合法：ERROR 1265 (01000) : Data truncated for column 'gender' at row 1

4、无效的日期转换：ERROR  1292 (22007) : Incorrect date value: 'DEC-21-1908' for column 'birth_date' at row 1