我收到了模糊定义的列。输入此SQL语句后。 我想要做的是计算BusinessEventInvite和EventInvite之间参加每个事件的人数。
>>> [str(i) for i in [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]]
['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
>>> ' + '.join(['1', '2', '3', '4', '5', '6', '7', '8', '9', '10'])
'1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10'
BEI表
ALUMNIID EVENTID RSVP出席
SELECT DISTINCT E.EVENTID, Count(EI.Attended)+Count(BEI.Attended) as TotalAttended
FROM EVENT E
left outer join BUSINESSEVENTINVITE BEI ON E.EVENTID= BEI.eventid
left outer join EVENTINVITE EI on EI.EVENTID = E.EVENTID
WHERE EI.ATTENDED = Attended and BEI.ATTENDED = Attended
GROUP BY E.EVENTID
ORDER BY E.EVENTID ASC;
选择了6行
EI表 ALUMNIID EVENTID RSVP出席
1 6 YES Attended
2 6 YES Attended
3 6 YES Attended
4 6 YES Attended
5 6 YES Attended
6 6 NO
选择了10行
活动表
EVENTID EVENTNAME
7 6 YES Attended
8 6 YES Attended
9 6 No
10 7 YES Attended
11 8 YES Attended
12 7 YES Attended
13 7 YES Attended
14 8 YES Attended
15 7 YES Attended
16 8 YES Attended
答案 0 :(得分：1)
如果这些列存在于这些表中，则需要显示表的模式。但一般来说，当SQL Server在您在查询中使用的2个或更多表中找到相同的列名时，您会收到该错误，因此要求您通过使用别名限定它们来解决该歧义。
我的猜测是你需要改变这一行
WHERE EI.ATTENDED = BEI.Attended
到
@charset "utf-8";
#menu2,
#menu2 ul,
#menu2 li,
#menu2 a {
margin: 0;
padding: 0;
border: none;
outline: none;
}
/* menu2 */
#menu2 {
width:850px;
height:33px;
margin:0px;
padding:0px;
font-size:13px;
vertical-align:top;
float:left;
border-top-right-radius:10px;
/*background: -webkit-linear-gradient(top, #7b0100 0%,#7b0100 100%);
background: -moz-linear-gradient(top, #7b0100 0%,#7b0100 100%);
background: -o-linear-gradient(top, #7b0100 0%,#7b0100 100%);
background: -ms-linear-gradient(top, #7b0100 0%,#7b0100 100%);
background: linear-gradient(top, #7b0100 0%,#7b0100 100%);
*/
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
}
#menu2 li:hover{
background:#000066;
color:#FF0;
}
#li_menu{
width:80px;
text-align:center;
padding:0px;
margin:0px;
}
#li_submenu{
text-align:left;
}
#menu2 li {
position: relative;
list-style: none;
float: left;
display: block;
height: 34px;
}
/* Links */
#menu2 li a {
display: block;
padding: 0 14px;
margin: 6px 0;
line-height: 28px;
text-decoration: none;
border-left: 1px solid #CCC;
border-right: 1px solid #9000;
font-family: Helvetica, Arial, sans-serif;
font-weight: bold;
font-size: 13px;
color: #FFFFFF;
text-shadow: 1px 1px 1px rgba(0,0,0,.6);
-webkit-transition: color .2s ease-in-out;
-moz-transition: color .2s ease-in-out;
-o-transition: color .2s ease-in-out;
-ms-transition: color .2s ease-in-out;
transition: color .2s ease-in-out;
}
#menu2 li:first-child a { border-left: none; }
#menu2 li:last-child a{ border-right: none; }
#menu2 li:hover > a { color: #FFFF00; }
/* Sub menu2 */
#menu2 ul {
position: absolute;
top: 40px;
left: 0;
opacity: 0;
background: #0000FF;
-webkit-border-radius: 0 0 5px 5px;
-moz-border-radius: 0 0 5px 5px;
border-radius: 0 0 5px 5px;
-webkit-transition: opacity .25s ease .1s;
-moz-transition: opacity .25s ease .1s;
-o-transition: opacity .25s ease .1s;
-ms-transition: opacity .25s ease .1s;
transition: opacity .25s ease .1s;
}
#menu2 li:hover > ul {
opacity: 1;
}
#menu2 ul li {
height: 0;
overflow: hidden;
padding: 0;
-webkit-transition: height .25s ease .1s;
-moz-transition: height .25s ease .1s;
-o-transition: height .25s ease .1s;
-ms-transition: height .25s ease .1s;
transition: height .25s ease .1s;
}
#menu2 li:hover > ul li {
height: 34px;
overflow: visible;
padding: 0;
}
#menu2 ul li a {
width: 120px;
padding: 4px 0 4px 30px;
margin: 0;
border: none;
border-bottom: 1px solid #4F0002;
}
+++++++++++++++
#menu, #menu ul {
list-style:none;
padding:0;
margin:0;
}
#menu li {
float:center;
position:relative;
line-height: 4.5em;
width: 10em;
}
#menu li ul {
position:absolute;
margin-top:-1em;
margin-left:.5em;
display:none;
}
#menu ul li ul {
margin-top:-3em;
margin-left:7em;
}
#menu a {
display:block;
border-right:0px solid #fff;
color:#FFFFFF;
text-decoration:none;
padding:0 10px;
}
#menu a:hover {
background-color:#0000FF;
color:#fff;
}
#menu ul {
border-top:1px solid #fff;
}
#menu ul a {
border-right:none;
border-right:1px solid #fff;
border-bottom:1px solid #fff;
border-left:1px solid #fff;
background:#0000FF;
}
/* SHOW SUBMENU 1 */
#menu li:hover ul, #menu li.over ul {
display:block;
position: absolute;
}
#menu li:hover ul ul, #menu li.over ul ul {
display:none;
}
/* SHOW SUBMENU 2 */
#menu ul li:hover ul, #menu ul li.over ul {
display:block;
}
+++++++++++++++++++++++++++++++++答案 1 :(得分：0)
这可能是您WHERE声明的原因，如下所示
WHERE EI.ATTENDED = Attended and BEI.ATTENDED = Attended
可能应该
WHERE EI.ATTENDED = 'Attended' AND BEI.ATTENDED = 'Attended';
考虑更改您的查询并将条件从WHERE移至JOIN ON，如
SELECT DISTINCT E.EVENTID, Count(EI.Attended)+Count(BEI.Attended) as TotalAttended
FROM EVENT E
left outer join BUSINESSEVENTINVITE BEI ON E.EVENTID= BEI.eventid
AND BEI.ATTENDED = 'Attended'
left outer join EVENTINVITE EI on EI.EVENTID = E.EVENTID
AND EI.ATTENDED = 'Attended'
GROUP BY E.EVENTID
ORDER BY E.EVENTID ASC;
答案 2 :(得分：0)
ALUMNIID EVENTID RSVP出席
1 6 YES Attended
2 6 YES Attended
3 6 YES Attended
4 6 YES Attended
5 6 YES Attended
6 6 NO
选择了6行
ALUMNIID EVENTID RSVP出席
7 6 YES Attended
8 6 YES Attended
9 6 No
10 7 YES Attended
11 8 YES Attended
12 7 YES Attended
13 7 YES Attended
14 8 YES Attended
15 7 YES Attended
16 8 YES Attended
选择了10行
第一个表是BEI，第二个表是EI
答案 3 :(得分：0)
试试这个，因为你还没有参加哪个表？因为现在有3张桌子。
SELECT DISTINCT E.EVENTID, Count(EI.Attended)+Count(BEI.Attended) as TotalAttended
FROM EVENT E
left outer join BUSINESSEVENTINVITE BEI ON E.EVENTID= BEI.eventid
left outer join EVENTINVITE EI on EI.EVENTID = E.EVENTID
WHERE EI.ATTENDED = BEI.Attended and BEI.ATTENDED = EI.Attended
GROUP BY E.EVENTID
ORDER BY E.EVENTID ASC;
答案 4 :(得分：0)
模糊列错误是由于您没有为where语句标识别名，因为此查询中的多个表中存在属性 Attended 。你可能意味着在你的平等陈述中使用字符串'Attended'。
WHERE EI.ATTENDED = 'Attended' and BEI.ATTENDED = 'Attended'
这将返回参与这两个活动和被邀请的用户
WHERE EI.ATTENDED = 'Attended' or BEI.ATTENDED = 'Attended'
您可能希望查看结果产生的结果和'或'声明
很难确定您拥有或正在尝试使用有限的表/数据结构