Question

我需要帮助修复数据库错误。我是MySQL新手。我收到这样的错误：

数据库错误：无效的SQL：CREATE TABLE gl2preethyd1495077842 AS 选择chart_id，sum（a.amount）为dr，sum（a.amount）为cr FROM acc_trans a join gl b left outer join ar c ON a.trans_id = c.id WHERE if （c.service_completion为null，（a.transdate＆lt; =''和a.transdate＆gt; = ''），（c.service_completion＆lt; =''和c.service_completion＆gt; =''））和a.trans_id = b.id GROUP BY chart_id ORDER BY chart_id MySQL错误：1054（'where子句'中的未知列'c.service_completion'）

会话停止了。

CODE:

$sql =  "CREATE TABLE $temp2 AS " ;

$sql.=  "SELECT chart_id, sum(a.amount)  as dr, sum(a.amount) as cr FROM acc_trans a join gl b left outer join ar c ON a.trans_id=c.id " ;

$sql .="WHERE if ( c.service_completion is null, ( a.transdate <='$TB_ToDate' and a.transdate >= '$TB_FromDate' ), ( c.service_completion <='$TB_ToDate' and c.service_completion >= '$TB_FromDate' ) ) and a.trans_id=b.id ";

if ($attrib1<>'')       $sql .= " and attrib1=$attrib1 " ;
if ($attrib2<>'')       $sql .= " and attrib2=$attrib2 " ;
if ($attrib3<>'')       $sql .= " and attrib3=$attrib3 " ;
$sql.=  "GROUP BY chart_id ORDER BY chart_id" ;

我无法在代码中找到问题。

Answer 1

错误是不言自明的：

错误：1054（未知栏＆＃39; c.service_completion＆＃39; in＆＃39; where子句＆＃39;）

检查以下一行：

$sql .="WHERE if ( c.service_completion is null, ( a.transdate <='$TB_ToDate' and a.transdate >= '$TB_FromDate' ), ( c.service_completion <='$TB_ToDate' and c.service_completion >= '$TB_FromDate' ) ) and a.trans_id=b.id ";

此处c.service_completion是ar表中不存在的列（因为c是ar表的别名）。

MySQL数据库错误，'where子句'中的未知列X

1 个答案: