MySQL temp table

Source: Internet
Author: User

MySQL temp table: Generally used for stored procedures, temporary presence, after use of the system automatically cleared, efficiency than the normal table faster.
Useful: Use temporal tables for data that is repeatedly required for the lookup of the table.

--Create a temporary tableCREATE Temporary TABLE IF  not EXISTSeval_processevaldetail_tmp (StudentIDVARCHAR( -) not NULL, TotalbadgecountINT)--to add an index to a staging tableCREATE INDEXEval_processevaldetail_tmp_stuid oneval_processevaldetail_tmp (StudentID);--Delete temporary tableDROP TABLE IF EXISTSeval_processevaldetail_tmp;--Clear temporary table dataTRUNCATE TABLEeval_processevaldetail_tmp;

MySQL temp table

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.