索引：
一.API 列表
C# 代码中 String.Contains("conditionStr") 生成 SQL 对应的 like '%conditionStr%'
... ...
.Where(it => it.PathId.Contains("~00-d-3-1-"))
... ... 用于 单表 like 条件
.Queryer(out Agent agent1, out AgentInventoryRecord record1)
... ...
.Where(() => agent1.Name.Contains("陈"))
... ... 用于 多表连接 like 条件
C# 代码中 String.StartsWith("conditionStr") 生成 SQL 对应的 like 'conditionStr%'
... ...
.Where(it => it.PathId.StartsWith("~00-d-3-1-"))
... ... 用于 单表 like 条件
.Queryer(out Agent agent13, out AgentInventoryRecord record13)
... ...
.Where(() => agent13.Name.StartsWith("张"))
... ... 用于 多表连接 like 条件
C# 代码中 String.EndsWith("conditionStr") 生成 SQL 对应的 like '%conditionStr'
... ...
.Where(it => it.PathId.EndsWith("~00-d-3-1-"))
... ... 用于 单表 like 条件
.Queryer(out Agent agent13, out AgentInventoryRecord record13)
... ...
.Where(() => agent13.Name.EndsWith("华"))
... ... 用于 多表连接 like 条件
%_
在 string 变量中若检测到 通配符 存在，则以自定义的通配符表达式 在 DB 中进行 like 查询
/%/_(下划线转义)
转义后 字面值 的形式进行 like 查询
二.API 单表-便捷 方法 举例
1. like 条件
1 var res1 = await Conn.QueryListAsync<Agent>(it => it.Name.Contains("陈")); 生成 SQL 如下
1 select * 2 from `agent` 3 where `Name` like CONCAT('%',@Name__1,'%');
1 var res1 = await Conn.QueryListAsync<Agent>(it => !it.Name.Contains("刘")); 生成 SQL 如下
1 select * 2 from `agent` 3 where `Name` not like CONCAT('%',@Name__1,'%'); 三.API 单表-完整 方法 举例
1. like 条件
1 var res1 = await Conn 2 .Queryer<Agent>() 3 .Where(it => it.CreatedOn >= Convert.ToDateTime("2018-08-23 13:36:58").AddDays(-30)) 4 .And(it => it.PathId.Contains("~00-d-3-1-")) 5 .PagingListAsync(1, 10); 生成 SQL 如下
1 -- 总数 2 select count(*) 3 from `agent` 4 where `CreatedOn`>=@CreatedOn__1 5 and `PathId` like CONCAT('%',@PathId__2,'%'); 6 7 -- 分页数据 8 select * 9 from `agent` 10 where `CreatedOn`>=@CreatedOn__1 11 and `PathId` like CONCAT('%',@PathId__2,'%') 12 order by `Id` desc 13 limit 0,10; 2. not like 条件
1 var res1 = await Conn 2 .Queryer<Agent>() 3 .Where(it => !it.PathId.Contains("~00-d-3-1-")) 4 .PagingListAsync(1, 10); 生成 SQL 如下
1 -- 总数 2 select count(*) 3 from `agent` 4 where `PathId` not like CONCAT('%',@PathId__1,'%'); 5 6 -- 分页数据 7 select * 8 from `agent` 9 where `PathId` not like CONCAT('%',@PathId__1,'%') 10 order by `Id` desc 11 limit 0,10; 四.API 多表连接-完整 方法 举例
1. like 条件
1 var res1 = await Conn 2 .Queryer(out Agent agent1, out AgentInventoryRecord record1) 3 .From(() => agent1) 4 .InnerJoin(() => record1) 5 .On(() => agent1.Id == record1.AgentId) 6 .Where(() => agent1.Name.Contains("陈")) 7 .QueryListAsync<AgentInventoryRecord>(); 生成 SQL 如下
1 select record1.`*` 2 from `agent` as agent1 3 inner join `agentinventoryrecord` as record1 4 on agent1.`Id`=record1.`AgentId` 5 where agent1.`Name` like CONCAT('%',@Name__4,'%'); 2. not like 条件
1 var res1 = await Conn 2 .Queryer(out Agent agent1, out AgentInventoryRecord record1) 3 .From(() => agent1) 4 .InnerJoin(() => record1) 5 .On(() => agent1.Id == record1.AgentId) 6 .Where(() => !agent1.Name.Contains("陈")) 7 .QueryListAsync<AgentInventoryRecord>(); 生成 SQL 如下
1 select record1.`*` 2 from `agent` as agent1 3 inner join `agentinventoryrecord` as record1 4 on agent1.`Id`=record1.`AgentId` 5 where agent1.`Name` not like CONCAT('%',@Name__4,'%'); 五.String.StartsWith() 举例
1. like 条件
1 var res13 = await Conn 2 .Queryer(out Agent agent13, out AgentInventoryRecord record13) 3 .From(() => agent13) 4 .InnerJoin(() => record13) 5 .On(() => agent13.Id == record13.AgentId) 6 .Where(() => agent13.Name.StartsWith("张")) 7 .QueryListAsync<Agent>(); @Name__4 的值会自动生成
1 select agent13.`*` 2 from `agent` as agent13 3 inner join `agentinventoryrecord` as record13 4 on agent13.`Id`=record13.`AgentId` 5 where agent13.`Name` like @Name__4;
2. not like 条件
1 var res22 = await Conn 2 .Queryer(out Agent agent22, out AgentInventoryRecord record22) 3 .From(() => agent22) 4 .InnerJoin(() => record22) 5 .On(() => agent22.Id == record22.AgentId) 6 .Where(() => !agent22.Name.StartsWith("张")) 7 .QueryListAsync<Agent>(); '张%'
1 select agent22.`*` 2 from `agent` as agent22 3 inner join `agentinventoryrecord` as record22 4 on agent22.`Id`=record22.`AgentId` 5 where agent22.`Name` not like @Name__4;
六.String.EndsWith() 举例
1. like 条件
1 var res13 = await Conn 2 .Queryer(out Agent agent13, out AgentInventoryRecord record13) 3 .From(() => agent13) 4 .InnerJoin(() => record13) 5 .On(() => agent13.Id == record13.AgentId) 6 .Where(() => agent13.Name.EndsWith("华")) 7 .QueryListAsync<Agent>(); '%华'
1 select agent13.`*` 2 from `agent` as agent13 3 inner join `agentinventoryrecord` as record13 4 on agent13.`Id`=record13.`AgentId` 5 where agent13.`Name` like @Name__4;
2. not like 条件
1 var res22 = await Conn 2 .Queryer(out Agent agent22, out AgentInventoryRecord record22) 3 .From(() => agent22) 4 .InnerJoin(() => record22) 5 .On(() => agent22.Id == record22.AgentId) 6 .Where(() => !agent22.Name.EndsWith("华")) 7 .QueryListAsync<Agent>();
1 select agent22.`*` 2 from `agent` as agent22 3 inner join `agentinventoryrecord` as record22 4 on agent22.`Id`=record22.`AgentId` 5 where agent22.`Name` not like @Name__4;
1 var res5 = await Conn.QueryListAsync<Agent>(it => it.Name.Contains("陈%")); 生成 SQL 如下，其中 like 的时候 会保留 原状 按自定义的 格式串 查询，@Name__1 的值为
1 select * 2 from `agent` 3 where `Name` like @Name__1;
1 var res6 = await Conn.QueryListAsync<Agent>(it => it.Name.Contains("王_")); 生成 SQL 如下，其中 like 的时候 会保留 原状 按自己定义的 格式串 查询，@Name__1 的值为
1 select * 2 from `agent` 3 where `Name` like @Name__1;
1 var res7 = await Conn 2 .Queryer<Agent>() 3 .Where(it => it.Name.Contains("刘/%_")) 4 .And(it => it.Id == resx4.Id) 5 .And(it => it.Name.Contains("%华")) 6 .And(it => it.Name.Contains("%/%%")) 7 .QueryListAsync(); /%_' ，% 会按其 字面义 在DB中匹配查询
1 select * 2 from `agent` 3 where `Name` like @Name__1 escape '/' 4 and `Id`=@Id__2 5 and `Name` like @Name__3 6 and `Name` like @Name__4 escape '/';
1 var res8 = await Conn.QueryListAsync<Agent>(it => it.Name.Contains("何/__")); /__' ，_ 会按其 字面义 在DB中匹配查询
1 select * 2 from `agent` 3 where `Name` like @Name__1 escape '/';
蒙
2019-02-18 14:45 周一