MySQL determines that the specified condition data does not exist, does not exist, and then inserts

Source: Internet
Author: User

Toss a half-day finally put this to toss shun, but later found not to use unexpectedly ... Tragedy, but keep a record of deep memory.

Insert INTO table1 (field1, field2,field3) Select-Field1,?field2,?field3 from Temp

Where NOT EXISTS (select field1,field2,field3 from table1 where Field1=?field1 and Field2=?field2 and field3=?field3);

Table1 is your table name.

FIELD1,FIELD2,FIELD3 is the database field name

? FIELD1,?FIELD2,?FIELD3 is the data for the actual field

Temp is a temporary table name, and this can be random.

MySQL determines that the specified condition data does not exist, does not exist, and then inserts

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.