Select 无法识别 CASE 关键字和意外标记

Question

SELECT *,
    ADDTIME(lastMove, maxzettijd) AS zettenTot,
    CASE
        WHEN zettenTot < NOW()
        THEN 1
        ELSE 0
        END AS zettijdOverschrijding
FROM games 
WHERE gameID = 2787392
LIMIT 1

lastMove = DATETIME field (0000-00-00 00:00:00)
maxzettijd = TIME field. (000:00:00)

错误：无法识别关键字。 （在 position 162 的“AS”附近）意外的令牌。 （靠近“zettijdOverschrijding”，电话 position 165）

没有 CASE 查询工作。

在 CASE 部分：我将当前时间与过期时间 (zettenTot) 进行比较。 如果回合结束，则 zettijdOverschrijding = 1（回合结束，游戏失败）

编辑：添加表格

CREATE TABLE `games` (
`gameID` int(20) UNSIGNED NOT NULL,
`whitePlayer` mediumint(9) DEFAULT NULL,
`blackPlayer` mediumint(9) DEFAULT NULL,
`gameMessage`  
 enum('','playerInvited','inviteDeclined','draw','playerResigned',
 'checkMate',' 
 VERLOPEN','ONGELDIG','tijdoverschrijding','ingetrokken',
'stalemate','zettijdoverschrijding') NOT NULL,
`messageFrom` enum('','black','white','Admin') NOT NULL,
`wit_rem_aanvraag` datetime NOT NULL,
`zwart_rem_aanvraag` datetime NOT NULL,
`rem_antw_zwart` datetime NOT NULL,
`rem_antw_wit` datetime NOT NULL,
`dateCreated` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`lastMove` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`ratingset` enum('notset','set') NOT NULL DEFAULT 'notset',
`rating_white_start` int(11) DEFAULT NULL,
`rating_white_end` int(11) NOT NULL DEFAULT '0',
`rating_black_start` int(11) DEFAULT NULL,
`rating_black_end` int(11) NOT NULL DEFAULT '0',
`notitie_wit` text NOT NULL,
`notitie_zwart` text NOT NULL,
`vak_wit` date NOT NULL DEFAULT '0000-00-00',
`vak_zwart` date NOT NULL DEFAULT '0000-00-00',
`her_invite` tinyint(4) NOT NULL DEFAULT '0',
`pionpromo` tinyint(4) NOT NULL DEFAULT '0',
`beurtaan` tinytext NOT NULL,
`whiteNick` tinytext,
`blackNick` tinytext,
`kibW` enum('ja','nee') NOT NULL DEFAULT 'ja',
`kibZ` enum('ja','nee') NOT NULL DEFAULT 'ja',
`comment` tinytext NOT NULL,
`witOnline` datetime NOT NULL,
`zwartOnline` datetime NOT NULL,
`chataanvraagdoor` int(10) UNSIGNED NOT NULL,
`chataanvraagtijd` datetime NOT NULL DEFAULT '1900-00-00 00:00:00',
`ftoernooi` enum('0','1') NOT NULL DEFAULT '0',
`tafel` enum('0','1') NOT NULL DEFAULT '0',
`ratingrange` smallint(5) UNSIGNED NOT NULL DEFAULT '500',
`speeltijd` mediumint(3) UNSIGNED DEFAULT NULL,
`speeltijdwit` mediumint(8) UNSIGNED NOT NULL,
`speeltijdzwart` mediumint(8) UNSIGNED NOT NULL,
`maxzettijd` time NOT NULL,
`startklok` datetime NOT NULL,
`opener` mediumint(8) UNSIGNED DEFAULT NULL,
`ts_ladder` tinyint(3) UNSIGNED DEFAULT NULL COMMENT 'teamschaken 
laddertoernooi',
`t_partij` tinyint(3) UNSIGNED NOT NULL DEFAULT '0',
`tt` tinyint(3) UNSIGNED NOT NULL COMMENT 'teamtoernooi',
`rated` tinyint(3) UNSIGNED NOT NULL DEFAULT '1',
`klok` tinyint(4) NOT NULL DEFAULT '0',
`toernooisoort` tinyint(10) UNSIGNED NOT NULL DEFAULT '0' COMMENT '0 = 
 geen 
 toernooi, 1 = tsreg',
`vakmodus` tinyint(4) NOT NULL DEFAULT '0',
`50zetten` tinyint(3) UNSIGNED NOT NULL DEFAULT '0'
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='herinvite: 1=uitnodiging, 
 2 voor lopende partij';

Answer 1

我认为您的问题是由在CASE语句中使用别名列引起的。 您可以尝试更新您的查询：

SELECT *,
       ADDTIME(lastmove, maxzettijd) AS zettenTot,
       (CASE
         WHEN ADDTIME(lastmove, maxzettijd) < NOW() THEN 1
         ELSE 0
       END)                           AS zettijdOverschrijding
FROM   games
WHERE  gameid = 2787392
LIMIT  1