Question

我有一个表名课程。它包含以下数据：

mca
bca
msc
me

现在当我一次输入mca mtech的2个值时。它应该接受mtech并忽略mca。请任何人帮忙解决。

Field   Type    Collation   Attributes  Null    Default Extra   Action
    id  int(15)         No  None    AUTO_INCREMENT   Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext
    register_number varchar(255)    latin1_swedish_ci       No  None         Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext
    name    varchar(255)    latin1_swedish_ci       No  None         Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext
    course_code varchar(255)    latin1_swedish_ci       No  None         Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext
    subject_code    varchar(255)    latin1_swedish_ci       No  None         Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext
    exam_name   varchar(255)    latin1_swedish_ci       No  None         Browse distinct values  Change  Drop    Primary     Unique  Index  Fulltext

Answer 1

使用类似的东西：

INSERT INTO TABLE1(column1, column2, ... 
VALUES value_for_column1, value_for_column2, ...
WHERE NOT EXISTS (SELECT * FROM TABLE1 WHERE column1 = value_for_column1)

忽略重复并在mysql中插入新记录

1 个答案: