HAMA 블로그

The PostgreSQL Joins clause is used to combine records from two or more tables in a database. A JOIN is a means for combining fields from two tables by using values common to each.Join Types in PostgreSQL are:The CROSS JOINThe INNER JOINThe LEFT OUTER JOINThe RIGHT OUTER JOINThe FULL OUTER JOINBefore we proceed, let's consider two tables COMPANY and DEPARTMENT. We already have seen INSERT statem..