SQL Server代码，如果可能的话。
假设您有一个包含两列的表格。第1列名为Monster，第2列名为Level：
Monster | Level
_______________
Small Beast | 300
Large Beast | 700
Small Dragon | 350
Large Dragon | 800
如何查询此表以获取第1列：Monster的所有可能组合？请记住，表格中的怪物数量可能会有波动。
因此输出将是：
Small Beast, Large Beast
Small Beast, Small Dragon
Small Beast, Large Dragon
Large Beast, Small Dragon
Large Beast, Large Dragon
Small Dragon, Small Beast, Large Beast
Large Dragon, Small Beast, Large Beast
......等等。
然后我想为组合中的所有怪物添加第2列：Level的总和值并输出它们：
Small Beast, Large Beast: 1000
Small Beast, Small Dragon: 650
Large Dragon, Small Beast, Large Beast: 1800
答案 0 :(得分：3)
您可以使用递归CTE：
;WITH cte AS (
SELECT Monster,
[Level],
1 as l
FROM YourTable
UNION ALL
SELECT c1.Monster+','+c2.Monster,
c1.[Level]+c2.[Level],
c1.l+1
FROM cte c1
CROSS JOIN YourTable c2
WHERE c1.Monster NOT LIKE '%'+c2.Monster+'%'
)
SELECT *
FROM cte
ORDER BY l
OPTION (MAXRECURSION 0)
输出：
Monster Level l
Small Beast 300 1
Large Beast 700 1
Small Dragon 350 1
Large Dragon 800 1
Large Dragon,Small Beast 1100 2
Large Dragon,Large Beast 1500 2
Large Dragon,Small Dragon 1150 2
Small Dragon,Small Beast 650 2
Small Dragon,Large Beast 1050 2
Small Dragon,Large Dragon 1150 2
Large Beast,Small Beast 1000 2
Large Beast,Small Dragon 1050 2
Large Beast,Large Dragon 1500 2
Small Beast,Large Beast 1000 2
Small Beast,Small Dragon 650 2
Small Beast,Large Dragon 1100 2
Small Beast,Large Dragon,Large Beast 1800 3
Small Beast,Large Dragon,Small Dragon 1450 3
Small Beast,Small Dragon,Large Beast 1350 3
Small Beast,Small Dragon,Large Dragon 1450 3
...
Large Beast,Small Dragon,Large Dragon,Small Beast 2150 4
Large Beast,Small Dragon,Small Beast,Large Dragon 2150 4
Small Beast,Small Dragon,Large Dragon,Large Beast 2150 4
Small Beast,Small Dragon,Large Beast,Large Dragon 2150 4
Small Beast,Large Dragon,Small Dragon,Large Beast 2150 4
Small Beast,Large Dragon,Large Beast,Small Dragon 2150 4
答案 1 :(得分：0)
有一种方法可以做到：
/* SEARCH TOOL */
.search{
width: 25%;
}
.fixed-table-toolbar .bs-bars,
.fixed-table-toolbar .search,
.fixed-table-toolbar .columns {
position: relative;
margin-top: 10px;
margin-bottom: 10px;
line-height: 34px;
}
<table class='table-bordered' id='tableprod'
data-toggle='table'
data-toolbar='#toolbar'
data-show-refresh='true'
data-show-toggle='true'
data-sort-name='name'
data-sort-order='desc'
data-show-columns='true'
data-pagination='true'
data-search='true'>
<thead class='thead-inverse'>
<tr>
<th data-field='seleccion' data-switchable='false' data-checkbox='true'></th>
<th data-field='estado' data-switchable='false'></th>
<th data-field='pagina' data-sortable='true'>PÀGINA</th>
<th data-field='codigo' data-sortable='true' data-switchable='false'>CODI</th>
<th data-field='descripcion' data-sortable='true' data-switchable='false'>DESCRIPCIÓ</th>
<th data id='image' data-switchable='false'>imatge</th>
<th data-field='pvp-cat' data-sortable='true'>PVP-CAT</th>
<th data-field='pvp-lev' data-sortable='true'>PVP-LEV</th>
<th data-field='pvp-and' data-sortable='true'>PVP-AND</th>
<th data-field='pvp-cen' data-sortable='true'>PVP-CEN</th>
<th data-field='pvp-nor' data-sortable='true'>PVP-NOR</th>
<th data-field='pvp-vas' data-sortable='true'>PVP-VAS</th>
<th data-field='fecha-mod' data-sortable='true'>FECHA-MOD</th>
<th data-field='user' data-sortable='true' data-visible='false'>USER</th>
<th data-field='edit' data-sortable='false' data-switchable='false'>EDIT</th>
</tr>
</thead>
<tbody>
<tr>
<!— Function to load registres —>
</tr>
</tbody>
</table>
if (this.options.search) {
html = [];
html.push(
'<div class="pull-' + this.options.searchAlign + ' search">',
sprintf('<input class="form-control' +
sprintf(' input-%s', this.options.iconSize) +
'" type="text" placeholder="%s">',
this.options.formatSearch()),
'</div>');
this.$toolbar.append(html.join(''));
$search = this.$toolbar.find('.search input');
$search.off('keyup drop').on('keyup drop', function (event) {
if (that.options.searchOnEnterKey && event.keyCode !== 13) {
return;
}
if ($.inArray(event.keyCode, [37, 38, 39, 40]) > -1) {
return;
}
clearTimeout(timeoutId); // doesn't matter if it's 0
timeoutId = setTimeout(function () {
that.onSearch(event);
}, that.options.searchTimeOut);
});
if (isIEBrowser()) {
$search.off('mouseup').on('mouseup', function (event) {
clearTimeout(timeoutId); // doesn't matter if it's 0
timeoutId = setTimeout(function () {
that.onSearch(event);
}, that.options.searchTimeOut);
});
}
}
结果：
SELECT M1.monster,
M2.monster,
M1.level + M2.level
FROM
monsters AS M1
CROSS JOIN
monsters AS M2
祝福！