Information Schema: How to use INFORMATION_SCHEMA to reverse engineer your PostgreSQL Database.

Описание

How to use INFORMATION_SCHEMA to reverse engineer your PostgreSQL database.
Learn more about information schema.

Find the names of all the catalogs, tables, column.
Find all the check constraints.
Watch me create a user defined data type and then use it when creating a table, and trying to insert data.

See if a column is NULLABLE.
See the data type of a column
See if a column has a check constraints

how to get list of tables from postgresql
how to see all the columns of a table
how to create user defined data type
how to see all the check constraints on your database
how to use pgadmin 4, 6.11

Use information schema to query the database meta data.

Table of Contents
00:00 Video Starts
00:18 Where to final INFORMATION_SCHEMA
00:28 introduction of information_schema.tables
02:45 information_schema.columns
03:26 - See a code generator at work using Information_schema
05:38 information_schema.table_constraints
09:37 information_schema.check_constraint
10:50 information_schema.column_domain_usage
14:56 information_schema.domain

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