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UPDATE [ ONLY ] table SET column = { expression | DEFAULT } [, ...]
    [ FROM fromlist ]
    [ WHERE condition ]

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table

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column

tableÆâ¤ÎÎó̾¤Ç¤¹¡£

expression

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DEFAULT

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fromlist

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condition

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UPDATE count

count ¤Ï¹¹¿·¤µ¤ì¤¿¹Ô¿ô¤ò°ÕÌ£¤·¤Þ¤¹¡£ count¤¬0¤Î¾ì¹ç¤Ïcondition¤Ë°ìÃפ¹¤ë¹Ô¤¬¤Ê¤«¤Ã¤¿¤³¤È¤ò°ÕÌ£¤·¤Þ¤¹¡£ (¤³¤ì¤Ï¥¨¥é¡¼¤È¤Ï¤ß¤Ê¤µ¤ì¤Þ¤»¤ó¡£)

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UPDATE films SET kind = 'Dramatic' WHERE kind = 'Drama';

weather¥Æ¡¼¥Ö¥ë¤Î¤¢¤ë¹Ô¤ËÂФ·¡¢µ¤²¹¹àÌܤòÄ´À°¤·¡¢¹ß¿åÎ̤ò¥Ç¥Õ¥©¥ë¥ÈÃͤËÌᤷ¤Þ¤¹¡£

UPDATE weather SET temp_lo = temp_lo+1, temp_hi = temp_lo+15, prcp = DEFAULT
  WHERE city = 'San Francisco' AND date = '2003-07-03';

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