This video talks about
how to Change data types in Postgresql
postgresql alter data types
how to alter column lengths in postgresql

ALTER TABLE EMP1
ALTER COLUMN Bonus TYPE NUMERIC USING Bonus:: NUMERIC

PostgreSQL Installation | PgAdmin 4 installation in windows | how to install postgresql

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postgresql interview questions and Answers..

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Complete PostgreSQL Tutorials Play List | Beginners Postgresql Materials

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Different Types of commands in postgresql | postgresql commands

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how to start psql postgres | postgresql command prompt| How to use psql Shell

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DDL Commands in postgresql | postgres create, drop , alter, truncate commands

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What is constraint and purpose of constraints ? Diff types of constraints?

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Not Null Constraints in Postgresql | postgresql not null example|sql not null

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Postgresql Tutorials | Unique Constraints in Postgresql | psql unique constraints

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Foreign Key Constraints in Postgresql | primary and foreign key relationship

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Check Constraints in Postgresql

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