Question : I have 4 mysql databases that I’m replicating from a master to a slave. In the past, I […]
Tag: rename
Are extra unused columns helpful in future?
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)
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?
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?
Question : I understand that renaming a table within the same database will not generally result in a table copy… […]