我有一个表名类(class)。它包含以下数据:
mca
bca
msc
me
现在,当我一次输入 2 个值时,mca mtech。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
最佳答案
使用这样的东西:
INSERT INTO TABLE1(column1, column2, ...
VALUES value_for_column1, value_for_column2, ...
WHERE NOT EXISTS (SELECT * FROM TABLE1 WHERE column1 = value_for_column1)
关于mysql - 忽略重复项并在 mysql 中插入新记录,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19675787/