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Programming, sql-server

IT Nursery

How to change column datatype in SQL Server database without losing data?

I have SQL Server database and I just realized that I can change the type of one of the columns from int to ...

May 27, 2022
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How to move columns in a MySQL table?

Currently I am having the following MySQL table: Employees (empID, empName, department); I want to change the table to the following: Employees (empID, ...

May 24, 2022
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How to remove constraints from my MySQL table?

I want to remove constraints from my table. My query is: ALTER TABLE `tbl_magazine_issue` DROP CONSTRAINT `FK_tbl_magazine_issue_mst_users` But I got an error: #1064 ...

May 18, 2022
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?

I would like to write a single SQL command to drop multiple columns from a single table in one ALTER TABLE statement. From ...

May 11, 2022
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How do I modify a MySQL column to allow NULL?

MySQL 5.0.45 What is the syntax to alter a table to allow a column to be null, alternately what’s wrong with this: ALTER ...

May 4, 2022
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