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<pre> SELECT *
FROM t1 LEFT OUTER JOIN t2 USING (col);</pre>
-¤³¤ì¤é¤Î¾ÝħŪ¤ÊÌ䤤¹ç¤ï¤»¤Ç¤Ï t1.col ¤ò t2.col ¤È·ë¹ç¤·¤Æ¡¢t1 ¤Î
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-
-
-
-
-
-
-
-
-
-+These identical queries join t1.col to t2.col, and also return any unjoined
-+rows in t1 (those with no match in t2). A <font size=-1>RIGHT</font> join
-+would add unjoined rows of t2. A <font size=-1>FULL</font> join would return
-+the matched rows plus all unjoined rows from t1 and t2. The word <font size=-1>OUTER</font>
-+is optional and is assumed in <font size=-1>LEFT</font>, <font size=-1>RIGHT</font>,
-+and <font size=-1>FULL</font> joins. Ordinary joins are called <font size=-1>INNER</font>
-+joins.
-
+¤³¤ì¤é¤Î¾ÝħŪ¤ÊÌ䤤¹ç¤ï¤»¤Ç¤Ï t1.col ¤ò t2.col ¤È·ë¹ç¤·¤Æ¡¢t1 ¤Î·ë¹ç¤µ¤ì¤Ê¤«¤Ã¤¿¹Ô(t2 ¤È°ìÃפ·¤Ê¤«¤Ã¤¿¹Ô)¤âÊÖ¤·¤Æ¤¤¤Þ¤¹¡£<font size=-1>RIGHT</font> ·ë¹ç¤Ï t2 ¤Î·ë¹ç¤µ¤ì¤Ê¤«¤Ã¤¿¹Ô¤ò²Ã¤¨¤ë¤Ç¤·¤ç¤¦¡£<font size=-1>FULL</font> ·ë¹ç¤Ï¡¢°ìÃפ·¤¿¹Ô¤Ë t1 ¤È t2 ¤«¤é¤Ï·ë¹ç¤µ¤ì¤Ê¤«¤Ã¤¿¹Ô¤òÊÖ¤¹¤Ç¤·¤ç¤¦¡£<font size=-1>OUTER</font> ¤È¤¤¤¦¸ÀÍդϥª¥×¥·¥ç¥ó¤Ç <font size=-1>LEFT</font>, <font size=-1>RIGHT</font>, ¤Þ¤¿¤Ï <font size=-1>FULL</font> ¤Ê¤É¤Î·ë¹ç¤ò²¾Äꤵ¤ì¤Æ¤¤¤Þ¤¹¡£
°ÊÁ°¤Î¥ê¥ê¡¼¥¹¤Ç¤Ï³°Éô·ë¹ç(outer join)¤ò<font size=-1>UNION</font> ¤È <font size=-1>NOT IN</font> ¤ò»È¤Ã¤Æ¥·¥ß¥å¥ì¡¼¥È¤Ç¤¤Þ¤¹¡£
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