SQL Alter Statement Commands | How to Add, Remove, Modify Column in Oracle SQL | SQL Full Course2023

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"SQL Alter Statement Commands | How to Add, Remove, Modify Column in Oracle SQL | SQL Full Course 2023
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02:03 - add the column to the existing table
05:15 - add multiple columns for existing tables
09:21 - drop multiple columns
15:19 - using alter statements
17:58 - constraints"

In this video, I have discussed about alter statement in SQL like how to add, remove, and modify column in oracle sql.
#alterstatement #sql #parnikatutorials

In Oracle, ALTER TABLE statement specifies how to add, modify, drop or delete columns in a table.

How to add column in a table
Syntax:

ALTER TABLE table_name ADD column_name column-definition;

How to add multiple columns in the existing table
Syntax:

ALTER TABLE table_name
ADD (column_1 column-definition, column_2 column-definition, ... column_n column_definition);

How to modify column of a table
Syntax:

ALTER TABLE table_name MODIFY column_name column_type;

How to modify multiple columns of a table
Syntax:

ALTER TABLE table_name MODIFY (column_1 column_type, column_2 column_type,
... column_n column_type);

How to drop column of a table

ALTER TABLE table_name DROP COLUMN column_name;

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