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update

2881099
2022-08-18 15:32:29 +08:00
parent f381bd2f1d
commit 1c9043fd91
2 changed files with 14 additions and 14 deletions
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14
Group-Aggregation-Query.md

@@ -81,23 +81,23 @@ var list = fsql.Select<Topic, Category, Area>()
## Aggregate ## Aggregate
- Distinct
```csharp ```csharp
var list = fsql.Select<Topic>() var list = fsql.Select<Topic>()
.Aggregate(a => Convert.ToInt32("count(distinct title)"), out var count) .Aggregate(a => Convert.ToInt32("count(distinct title)"), out var count)
.ToList(); .ToList();
``` ```
## Count(Distinct ..) - SqlExt.DistinctCount
```csharp ```csharp
var count = fsql.Select<User1>().First(a => SqlExt.DistinctCount(a.Avatar)); fsql.Select<Topic>()
// SELECT count(distinct a."Avatar") as1 .Aggregate(a => SqlExt.DistinctCount(a.Key.Title), out var count);
// FROM "User1" a
// Or..
fsql.Select<User1>().Aggregate(a => SqlExt.DistinctCount(a.Avatar), out var count);
``` ```
> SELECT count(distinct a."title") as1 FROM "Topic" a
## API ## API
| Method | Return | Parameter | Description | | Method | Return | Parameter | Description |

14
分组聚合查询.md

@@ -78,23 +78,23 @@ var list = fsql.Select<Topic, Category, Area>()
## Aggregate ## Aggregate
- Distinct
```csharp ```csharp
var list = fsql.Select<Topic>() var list = fsql.Select<Topic>()
.Aggregate(a => Convert.ToInt32("count(distinct title)"), out var count) .Aggregate(a => Convert.ToInt32("count(distinct title)"), out var count)
.ToList(); .ToList();
``` ```
## Count(Distinct ..) - SqlExt.DistinctCount
```csharp ```csharp
var count = fsql.Select<User1>().First(a => SqlExt.DistinctCount(a.Avatar)); fsql.Select<Topic>()
// SELECT count(distinct a."Avatar") as1 .Aggregate(a => SqlExt.DistinctCount(a.Key.Title), out var count);
// FROM "User1" a
//或者
fsql.Select<User1>().Aggregate(a => SqlExt.DistinctCount(a.Avatar), out var count);
``` ```
> SELECT count(distinct a."title") as1 FROM "Topic" a
## API ## API
| 方法 | 返回值 | 参数 | 描述 | | 方法 | 返回值 | 参数 | 描述 |