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Tag: rename

Renaming multiple databases on a MySQL slave

By adminPosted on May 4, 2022

Question : I have 4 mysql databases that I’m replicating from a master to a slave. In the past, I […]

Are extra unused columns helpful in future?

By adminPosted on February 24, 2022

Question : Currently, while creating tables, we create 4 to 5 extra columns with temp names like c0, c1, c2 […]

How to rename a column name which has been created by a math function in mysql? Using ALTER TABLE is giving ERROR: 1064 (42000)

By adminPosted on August 22, 2021

Question : INPUT: CREATE TABLE dist -> SELECT ST_DISTANCE(POINT(x1,y1),POINT(x2,y2)) -> FROM config; OUTPUT: +——————————————+ | ST_DISTANCE(POINT(x1,y1) , POINT(x2,y2)) | +——————————————+ […]

Are extra unused columns helpful in future?

By adminPosted on March 30, 2021

Question : Currently, while creating tables, we create 4 to 5 extra columns with temp names like c0, c1, c2 […]

Will renaming a MySQL table to another database result in a full table copy operation on disk?

By adminPosted on May 17, 2020

Question : I understand that renaming a table within the same database will not generally result in a table copy… […]

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