The LEFT JOIN keyword returns all records from the left table (table1), and the matching records from the right table (table2). The result is 0 records from the ...
Informally, a join stitches two tables and puts on the same row records with matching fields : INNER , LEFT OUTER , RIGHT OUTER , FULL OUTER and CROSS . A Venn ...
2023年6月20日 — What Is a LEFT OUTER JOIN? The most common JOIN is INNER JOIN . It's a join type that returns only the matching rows from both joined tables.