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pg의 데이터 타입인 timestamp 와 timestamptz의 차이점에 대해 알아보자이 문서는 postgres 12 기준으로 작성되었다.postgresql 문서The SQL standard requires that writing just timestamp be equivalent to timestamp without time zone, and PostgreSQL honors that behavior. timestamptz is accepted as an abbreviation for timestamp with time zone; this is a PostgreSQL extension.=> timestamptz : timestamp with time zone의 약어timestamp : 타임존을 명시하지..