SQL tutorial 22: How to Add / Delete column from an existing table using alter table
SQL tutorial 22: How to Add / Delete column from an existing table using alter table. How to add column to an existing table using Alter table
How to delete a column from a table using alter table
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SQL tutorial 21 rename table using alter table
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How to Rename a column of a table using alter table and
How to modify a column of a table using alter table
How to change datatype of a column and how to change size/width of a column
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In this tutorial, you'll learn the difference between delete/drop and truncate.
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Oracle Database 11g Tutorial 21 :
How to rename table using SQL Alter Table
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How to Delete the duplicate records
How delete the duplicate rows ?
Tips: - Always take extra caution while deleting records.
1. First identify the duplicates using select.
2. Double verify those are actual ‘duplicate...
Welcome everyone! Something you need to consider when you are creating foreign keys is what happens if you delete the parent? As a reminder, the parent is the row that has the value you are referencing in the row that has a foreign key.
Why is this s...
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