索引:
一.API 列表
.QueryListAsync()
.QueryListAsync<M>()
如: .QueryListAsync<AgentInventoryRecord>() , 用于 单表/多表连接 查询.
.QueryListAsync<VM>()
如: .QueryListAsync<AgentVM>() , 用于 单表 查询.
.QueryListAsync<T>(Expression<Func<M, T>> columnMapFunc)
如: .QueryListAsync(it => it.Name) , 用于 单表 单列 查询.
或者:
.QueryListAsync(agent => new AgentVM
{
XXXX = agent.Name,
YYYY = agent.PathId
}) , 用于 单表 多列 查询.
.QueryListAsync<T>(Expression<Func<T>> columnMapFunc)
如: .Queryer(out Agent agent1, out AgentInventoryRecord record1)
... ...
.QueryListAsync(() => agent1.CreatedOn) , 用于 多表连接 单列 查询.
或者: .Queryer(out Agent agent12, out AgentInventoryRecord record12)
... ...
.QueryListAsync(() => new AgentVM
{
nn = agent12.PathId,
yy = record12.Id,
xx = agent12.Id,
zz = agent12.Name,
mm = record12.LockedCount
}) , 用于 多表连接 多列 查询.
二.API 单表-便捷 方法 举例
1. 单表 单列 多条 便捷方法
var res7 = await Conn.QueryListAsync<Agent, string>(it => it.Name.StartsWith("张"), it => it.Name);
以 MySQL 为例,生成 SQL 如下:
select `Name`
from `Agent`
where `Name` like ?Name_1;
2. 单表 多列 多条 便捷方法
var date = DateTime.Parse("2018-08-20"); var res3 = await Conn.QueryListAsync<AlipayPaymentRecord, AlipayPaymentRecordVM>(it => it.CreatedOn >= date,
it => new AlipayPaymentRecordVM
{
TotalAmount = it.TotalAmount,
Description = it.Description
});
以 MySQL 为例,生成 SQL 如下:
select `TotalAmount` as TotalAmount,
`Description` as Description
from `AlipayPaymentRecord`
where `CreatedOn`>=?CreatedOn_1;
3. 单表 VM 多条 便捷方法
var date = DateTime.Parse("2018-08-20"); var res2 = await Conn.QueryListAsync<AlipayPaymentRecord, AlipayPaymentRecordVM>(it => it.CreatedOn >= date);
以 MySQL 为例,生成 SQL 如下:
select `Id`,
`CreatedOn`,
`TotalAmount`,
`Description`,
`CanceledOn`
from `AlipayPaymentRecord`
where `CreatedOn`>=?CreatedOn_1;
4. 单表 M 多条 便捷方法
var date = DateTime.Parse("2018-08-20"); var res1 = await Conn.QueryListAsync<AlipayPaymentRecord>(it => it.CreatedOn >= date);
以 MySQL 为例,生成 SQL 如下:
select *
from `AlipayPaymentRecord`
where `CreatedOn`>=?CreatedOn_1;
三.API 单表-完整 方法 举例
1. 单表 单列 多条 完整方法
var res2 = await Conn
.Queryer<Agent>()
.Where(it => it.AgentLevel == AgentLevel.DistiAgent)
.QueryListAsync(it => it.Name);
以 MySQL 为例,生成 SQL 如下:
select `Name`
from `Agent`
where `AgentLevel`=?AgentLevel_1;
2.单表 多列 多条 完整方法
var res5 = await Conn
.Queryer<Agent>()
.Where(it => it.AgentLevel == AgentLevel.DistiAgent)
.QueryListAsync(agent => new AgentVM
{
XXXX = agent.Name,
YYYY = agent.PathId
});
以 MySQL 为例,生成 SQL 如下:
select `Name` as XXXX,
`PathId` as YYYY
from `Agent`
where `AgentLevel`=?AgentLevel_1;
3.单表 VM 多条 完整方法
var testQ5 = new WhereTestModel
{
CreatedOn = DateTime.Now.AddDays(-),
StartTime = WhereTest.CreatedOn,
EndTime = DateTime.Now,
AgentLevelXX = AgentLevel.DistiAgent,
ContainStr = "~00-d-3-1-"
};
var res5 = await Conn
.Queryer<Agent>()
.Where(it => it.CreatedOn >= testQ5.StartTime)
.QueryListAsync<AgentVM>();
以 MySQL 为例,生成 SQL 如下:
select `Id`,
`CreatedOn`,
`UserId`,
`PathId`,
`Name`,
`Phone`
from `Agent`
where `CreatedOn`>=?CreatedOn_1;
4. 单表 M 多条 完整方法
var start = WhereTest.CreatedOn.AddDays(-); var res2 = await Conn
.Queryer<BodyFitRecord>()
.Where(it => it.CreatedOn >= start)
.QueryListAsync();
以 MySQL 为例,生成 SQL 如下:
select *
from `BodyFitRecord`
where `CreatedOn`>=?CreatedOn_1;
四.API 多表连接-完整 方法 举例
1.多表连接 单列 多条 完整方法
var res1 = await Conn
.Queryer(out Agent agent1, out AgentInventoryRecord record1)
.From(() => agent1)
.InnerJoin(() => record1)
.On(() => agent1.Id == record1.AgentId)
.Where(() => agent1.AgentLevel == AgentLevel.DistiAgent)
.QueryListAsync(() => agent1.CreatedOn);
以 MySQL 为例,生成 SQL 如下:
select agent1.`CreatedOn`
from `Agent` as agent1
inner join AgentInventoryRecord as record1
on agent1.`Id`=record1.`AgentId`
where agent1.`AgentLevel`=?AgentLevel_4;
2.多表连接 多列 多条 完整方法
var res12 = await Conn
.Queryer(out Agent agent12, out AgentInventoryRecord record12)
.From(() => agent12)
.InnerJoin(() => record12)
.On(() => agent12.Id == record12.AgentId)
.Where(() => record12.CreatedOn >= WhereTest.CreatedOn)
.QueryListAsync(() => new AgentVM
{
nn = agent12.PathId,
yy = record12.Id,
xx = agent12.Id,
zz = agent12.Name,
mm = record12.LockedCount
});
以 MySQL 为例,生成 SQL 如下:
select agent12.`PathId` as nn,
record12.`Id` as yy,
agent12.`Id` as xx,
agent12.`Name` as zz,
record12.`LockedCount` as mm
from `Agent` as agent12
inner join AgentInventoryRecord as record12
on agent12.`Id`=record12.`AgentId`
where record12.`CreatedOn`>=?CreatedOn_4;
3.多表连接 M 多条 完整方法
var res1 = await Conn
.Queryer(out Agent agent1, out AgentInventoryRecord record1)
.From(() => agent1)
.InnerJoin(() => record1)
.On(() => agent1.Id == record1.AgentId)
.Where(() => agent1.CreatedOn >= WhereTest.CreatedOn.AddDays(-))
.QueryListAsync<AgentInventoryRecord>();
以 MySQL 为例,生成 SQL 如下:
select record1.`*`
from `Agent` as agent1
inner join AgentInventoryRecord as record1
on agent1.`Id`=record1.`AgentId`
where agent1.`CreatedOn`>=?CreatedOn_4;
蒙
2018-12-26 15:25 周三
2018-12-30 11:30 周日
2019-04-12 23:29 周五