[PostgreSQL]기본 데이터 타입 정리 - Boolean types

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• Character types / why should we use char instead of varchar?
• Numeric types
• Boolean types
• Temporal types
• UUID for storing Universally Unique Identifiers
• Array for storing array strings, numbers, etc...
• JSON stores JSON data
• hstore stores key-value pair
• User defined data

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Boolean

true, false, null 세개의 value 가진다.

 

TRUE → true, 't', 'true' 'y', 'yes', '1'

 

FALSE → false, 'f', 'false', 'n', 'no', '0'