To the left ; on the left

v.leave (leave? ???? ????)

plural: lefts

join

English [d???n] US [d???n]

vt.& vi.Join; ??; ??

vt.???; ??(?)

n.???; : Join ???: Join ?? ??: Join

mysql LEFT JOIN ??? ???

??: LEFT JOIN ???? ??? ???(table_name2)? ???? ?? ???? ?? ???(table_name1)? ?? ?? ?????.

??: ??SELECT column_name(s) FROM table_name1 LEFT JOIN table_name2 ON table_name1.column_name=table_name2.column_name

??: ?? ????????? LEFT JOIN? LEFT OUTER JOIN??? ???.

mysql LEFT JOIN ??? ?

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