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TQueryHelper.cs
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920 lines (836 loc) · 32.6 KB
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/*
* 作用：通过 Lambda 表达式生成增/删/改/查 SQL 语句。
* */
using Helper.Core.Library.QueryHelper;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
namespace Helper.Core.Library
{
public class TQueryHelper<T> where T : class
{
private TQueryHelperItem<T> helperItem;
public TQueryHelper()
{
this.helperItem = new TQueryHelperItem<T>();
}
#region 对外公开方法
#region 查询语句，入口点
/// <summary>
/// 查询
/// </summary>
/// <param name="top">Top 语句</param>
/// <returns></returns>
public TQueryHelper<T> Query(int top = 0)
{
this.helperItem.Init(top, false, TQueryHelperTypeEnum.QUERY_TYPE);
return this;
}
/// <summary>
/// 唯一查询
/// </summary>
/// <param name="top">Top 语句</param>
/// <returns></returns>
public TQueryHelper<T> Distinct(int top = 0)
{
this.helperItem.Init(top, true, TQueryHelperTypeEnum.QUERY_TYPE);
return this;
}
/// <summary>
/// 插入
/// </summary>
/// <param name="lambda">Lambda 表达式，例： p=> new { ID = p.ID, p.Name }</param>
/// <returns></returns>
public TQueryHelper<T> Insert(Expression<Func<T, object>> lambda = null)
{
this.helperItem.Insert(lambda);
return this;
}
/// <summary>
/// 更新
/// </summary>
/// <param name="lambda">Lambda 表达式，例： p=> new { ID = p.ID, p.Name }</param>
/// <returns></returns>
public TQueryHelper<T> Update(Expression<Func<T, object>> lambda = null, string cacheKey = null)
{
this.helperItem.Update(lambda);
return this;
}
/// <summary>
/// 删除
/// </summary>
/// <returns></returns>
public TQueryHelper<T> Delete()
{
this.helperItem.Delete();
return this;
}
#endregion
#region Select 语句
/// <summary>
/// 查询字段
/// </summary>
/// <param name="querySql">Sql 语句，多个字段用逗号分隔，例："IdentityID as ID, Name"</param>
/// <param name="typeList">Sql 语句中字段匹配所需类型</param>
/// <returns></returns>
public TQueryHelper<T> Select(string querySql, params Type[] typeList)
{
if (string.IsNullOrEmpty(querySql)) return this;
querySql = TQueryReflectionHelper.FormatQuerySql(querySql, typeList);
this.helperItem.Select(typeof(T), querySql);
return this;
}
/// <summary>
/// 查询字段
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new { ID = p.ID }</param>
/// <returns></returns>
public TQueryHelper<T> Select(Expression<Func<T, object>> lambda = null)
{
this.helperItem.Select(typeof(T), lambda);
return this;
}
/// <summary>
/// 查询字段
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new { ID = p.ID }</param>
/// <returns></returns>
public TQueryHelper<T> Select<K>(Expression<Func<K, object>> lambda = null) where K : class
{
this.helperItem.Select(typeof(K), lambda);
return this;
}
/// <summary>
/// 查询字段
/// </summary>
/// <param name="helper"></param>
/// <param name="newFieldName">新的字段名称</param>
/// <returns></returns>
public TQueryHelper<T> Select<K>(TQueryHelper<K> helper, string newFieldName = null) where K : class
{
this.helperItem.Select<K>(helper, newFieldName);
return this;
}
#endregion
#region 聚合函数
/// <summary>
/// COUNT
/// </summary>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Count(string newFieldName = null)
{
this.helperItem.Aggregate(newFieldName, "COUNT");
return this;
}
/// <summary>
/// COUNT
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Count(Expression<Func<T, object>> lambda, string newFieldName = null)
{
this.helperItem.Aggregate(lambda, newFieldName, "COUNT");
return this;
}
/// <summary>
/// COUNT
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Count<K>(Expression<Func<K, object>> lambda, string newFieldName = null) where K : class
{
this.helperItem.Aggregate(lambda, newFieldName, "COUNT");
return this;
}
/// <summary>
/// MAX
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Max(Expression<Func<T, object>> lambda, string newFieldName = null)
{
this.helperItem.Aggregate(lambda, newFieldName, "MAX");
return this;
}
/// <summary>
/// MAX
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Max<K>(Expression<Func<K, object>> lambda, string newFieldName = null) where K : class
{
this.helperItem.Aggregate(lambda, newFieldName, "MAX");
return this;
}
/// <summary>
/// MIN
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Min(Expression<Func<T, object>> lambda, string newFieldName = null)
{
this.helperItem.Aggregate(lambda, newFieldName, "MIN");
return this;
}
/// <summary>
/// MIN
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Min<K>(Expression<Func<K, object>> lambda, string newFieldName = null) where K : class
{
this.helperItem.Aggregate(lambda, newFieldName, "MIN");
return this;
}
/// <summary>
/// SUM
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Sum(Expression<Func<T, object>> lambda, string newFieldName = null)
{
this.helperItem.Aggregate(lambda, newFieldName, "SUM");
return this;
}
/// <summary>
/// SUM
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Sum<K>(Expression<Func<K, object>> lambda, string newFieldName = null) where K : class
{
this.helperItem.Aggregate(lambda, newFieldName, "SUM");
return this;
}
/// <summary>
/// AVG
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Avg(Expression<Func<T, object>> lambda, string newFieldName = null)
{
this.helperItem.Aggregate(lambda, newFieldName, "AVG");
return this;
}
/// <summary>
/// AVG
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="newFieldName">新的字段名</param>
/// <returns></returns>
public TQueryHelper<T> Avg<K>(Expression<Func<K, object>> lambda, string newFieldName = null) where K : class
{
this.helperItem.Aggregate(lambda, newFieldName, "AVG");
return this;
}
#endregion
#region Inner/Left/Right Join On And 语句
#region Inner Join On
/// <summary>
/// 表内连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> InnerJoin<K>(Expression<Func<T, K, bool>> lambda) where K : class
{
this.helperItem.Join<K>(lambda);
return this;
}
/// <summary>
/// 表内连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> InnerJoin<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Join<K>(lambda);
return this;
}
/// <summary>
/// 表内连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> InnerJoin<K, P>(Expression<Func<K, P, bool>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda);
return this;
}
/// <summary>
/// 表内连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> InnerJoin<K, P>(Expression<Func<P, object>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda);
return this;
}
#endregion
#region Left Join On
/// <summary>
/// 表左连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> LeftJoin<K>(Expression<Func<T, K, bool>> lambda) where K : class
{
this.helperItem.Join<K>(lambda, "left");
return this;
}
/// <summary>
/// 表左连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> LeftJoin<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Join<K>(lambda);
return this;
}
/// <summary>
/// 表左连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> LeftJoin<K, P>(Expression<Func<K, P, bool>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda, "left");
return this;
}
/// <summary>
/// 表左连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> LeftJoin<K, P>(Expression<Func<P, object>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda, "left");
return this;
}
#endregion
#region Right Join On
/// <summary>
/// 表右连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> RightJoin<K>(Expression<Func<T, K, bool>> lambda) where K : class
{
this.helperItem.Join<K>(lambda, "right");
return this;
}
/// <summary>
/// 表右连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> RightJoin<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Join<K>(lambda, "right");
return this;
}
/// <summary>
/// 表右连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <returns></returns>
public TQueryHelper<T> RightJoin<K, P>(Expression<Func<K, P, bool>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda, "right");
return this;
}
/// <summary>
/// 表右连接
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <returns></returns>
public TQueryHelper<T> RightJoin<K, P>(Expression<Func<P, object>> lambda)
where K : class
where P : class
{
this.helperItem.Join<K, P>(lambda, "right");
return this;
}
#endregion
#region Join On And
/// <summary>
/// Join And 条件
/// </summary>
/// <param name="querySql">Sql 语句，多个字段用逗号分隔，例：[TableName].[FieldID] = 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <param name="typeList">Sql 语句中字段匹配所需类型</param>
/// <returns></returns>
public TQueryHelper<T> JoinAnd(string querySql, bool isBreak = false, params Type[] typeList)
{
if (string.IsNullOrEmpty(querySql)) return this;
querySql = TQueryReflectionHelper.FormatQuerySql(querySql, typeList);
this.helperItem.JoinAnd(querySql, isBreak);
return this;
}
/// <summary>
/// Join And 条件
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=> p.ID == 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> JoinAnd(Expression<Func<T, bool>> lambda, bool isBreak = false)
{
this.helperItem.JoinAnd(lambda, isBreak);
return this;
}
/// <summary>
/// Join And 条件
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> JoinAnd<K>(Expression<Func<T, K, bool>> lambda, bool isBreak = false) where K : class
{
this.helperItem.JoinAnd(lambda, isBreak);
return this;
}
/// <summary>
/// Join And 条件
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> JoinAnd<K, P>(Expression<Func<K, P, bool>> lambda, bool isBreak = false)
where K : class
where P : class
{
this.helperItem.JoinAnd(lambda, isBreak);
return this;
}
#endregion
#endregion
#region Where 语句
/// <summary>
/// Where 条件语句
/// </summary>
/// <param name="querySql">Sql 语句，多个字段用逗号分隔，例：[TableName].[FieldID] = 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <param name="typeList">Sql 语句中字段匹配所需类型</param>
/// <returns></returns>
public TQueryHelper<T> Where(string querySql, bool isBreak = false, params Type[] typeList)
{
if (string.IsNullOrEmpty(querySql)) return this;
querySql = TQueryReflectionHelper.FormatQuerySql(querySql, typeList);
this.helperItem.Where(querySql, isBreak);
return this;
}
/// <summary>
/// Where 条件语句
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=> p.ID == 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> Where(Expression<Func<T, bool>> lambda, bool isBreak = false)
{
this.helperItem.Where(lambda, null, isBreak);
return this;
}
/// <summary>
/// Where 条件语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> Where<K>(Expression<Func<T, K, bool>> lambda, bool isBreak = false) where K : class
{
this.helperItem.Where(lambda, null, isBreak);
return this;
}
/// <summary>
/// Where 条件语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> Where<K, P>(Expression<Func<K, P, bool>> lambda, bool isBreak = false)
where K : class
where P : class
{
this.helperItem.Where(lambda, null, isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 and 前缀
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=> p.ID == 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> AndWhere(Expression<Func<T, bool>> lambda, bool isBreak = false)
{
this.helperItem.Where(lambda, "and", isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 and 前缀
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> AndWhere<K>(Expression<Func<T, K, bool>> lambda, bool isBreak = false) where K : class
{
this.helperItem.Where(lambda, "and", isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 and 前缀
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> AndWhere<K, P>(Expression<Func<K, P, bool>> lambda, bool isBreak = false)
where K : class
where P : class
{
this.helperItem.Where(lambda, "and", isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 or 前缀
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=> p.ID == 1</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> OrWhere(Expression<Func<T, bool>> lambda, bool isBreak = false)
{
this.helperItem.Where(lambda, "or", isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 or 前缀
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> OrWhere<K>(Expression<Func<T, K, bool>> lambda, bool isBreak = false) where K : class
{
this.helperItem.Where(lambda, "or", isBreak);
return this;
}
/// <summary>
/// Where 条件语句，默认添加 or 前缀
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> p.ID == y.ID</param>
/// <param name="isBreak">是否块，为 True 时，会添加左右括号</param>
/// <returns></returns>
public TQueryHelper<T> OrWhere<K, P>(Expression<Func<K, P, bool>> lambda, bool isBreak = false)
where K : class
where P : class
{
this.helperItem.Where(lambda, "or", isBreak);
return this;
}
#endregion
#region Order By 语句
/// <summary>
/// Order 排序语句
/// </summary>
/// <param name="querySql">Sql 语句，多个字段用逗号分隔，例："ID asc,Name desc"</param>
/// <param name="typeList">Sql 语句中字段匹配所需类型</param>
/// <returns></returns>
public TQueryHelper<T> Order(string querySql, params Type[] typeList)
{
if (string.IsNullOrEmpty(querySql)) return this;
querySql = TQueryReflectionHelper.FormatQuerySql(querySql, typeList);
this.helperItem.Order(typeof(T), querySql);
return this;
}
/// <summary>
/// Order 排序语句
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> Order(Expression<Func<T, object>> lambda)
{
this.helperItem.Order(lambda, "asc");
return this;
}
/// <summary>
/// Order 排序语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> Order<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Order(lambda, "asc");
return this;
}
/// <summary>
/// Order 排序语句，默认降序
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> OrderDesc(Expression<Func<T, object>> lambda)
{
this.helperItem.Order(lambda, "desc");
return this;
}
/// <summary>
/// Order 排序语句，默认降序
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> OrderDesc<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Order(lambda, "desc");
return this;
}
#endregion
#region Group By 语句
/// <summary>
/// Group 分组语句
/// </summary>
/// <param name="querySql">Sql 语句，多个字段用逗号分隔，例："ID asc,Name desc" 或 "[TableName].Field asc"</param>
/// <param name="typeList">Sql 语句中字段匹配所需类型</param>
/// <returns></returns>
public TQueryHelper<T> Group(string querySql, params Type[] typeList)
{
if (string.IsNullOrEmpty(querySql)) return this;
querySql = TQueryReflectionHelper.FormatQuerySql(querySql, typeList);
this.helperItem.Group(typeof(T), querySql);
return this;
}
/// <summary>
/// Group 分组语句
/// </summary>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> Group(Expression<Func<T, object>> lambda)
{
this.helperItem.Group(lambda);
return this;
}
/// <summary>
/// Group 分组语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID 或 p=> new {p.ID, p.Title}</param>
/// <returns></returns>
public TQueryHelper<T> Group<K>(Expression<Func<K, object>> lambda) where K : class
{
this.helperItem.Group(lambda);
return this;
}
#endregion
#region In 语句
/// <summary>
/// From In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> FromIn<K>(TQueryHelper<K> helper, string newTableName = null) where K : class
{
this.helperItem.FromIn<K>(helper, newTableName);
return this;
}
/// <summary>
/// Exists 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> Exists<K>(TQueryHelper<K> helper) where K : class
{
this.helperItem.Exists<K>(helper);
return this;
}
/// <summary>
/// NotExists 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> NotExists<K>(TQueryHelper<K> helper) where K : class
{
this.helperItem.Exists<K>(helper);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="fieldName">字段名</param>
/// <param name="fieldValueList">数据列表，例：new List<int>(){1, 2, 3}</param>
/// <param name="directUseFieldName">是否直接使用 fieldName</param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K>(string fieldName, IList<K> fieldValueList, bool directUseFieldName = false)
{
this.helperItem.WhereIn<K>(fieldName, "in", fieldValueList, directUseFieldName);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="fieldName">字段名</param>
/// <param name="helper"></param>
/// <param name="directUseFieldName">是否直接使用 fieldName</param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K>(string fieldName, TQueryHelper<K> helper, bool directUseFieldName = false) where K : class
{
this.helperItem.WhereIn<K>(fieldName, "in", helper, directUseFieldName);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="fieldValueList">数据列表，例：new List<int>(){1, 2, 3}</param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K>(Expression<Func<T, object>> lambda, IList<K> fieldValueList)
{
this.helperItem.WhereIn<K>(lambda, "in", fieldValueList);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="lambda">Lambda 表达式，例：p=>p.ID</param>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K>(Expression<Func<T, object>> lambda, TQueryHelper<K> helper) where K : class
{
this.helperItem.WhereIn<K>(lambda, "in", helper);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> y.ID</param>
/// <param name="fieldValueList">数据列表，例：new List<int>(){1, 2, 3}</param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K, P>(Expression<Func<K, object>> lambda, IList<P> fieldValueList) where K : class
{
this.helperItem.WhereIn<K, P>(lambda, "in", fieldValueList);
return this;
}
/// <summary>
/// Where Field In 子查询语句
/// </summary>
/// <typeparam name="K"></typeparam>
/// <typeparam name="P"></typeparam>
/// <param name="lambda">Lambda 表达式，例：(p, y)=> y.ID</param>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> WhereIn<K, P>(Expression<Func<K, P, object>> lambda, TQueryHelper<K> helper)
where K : class
where P : class
{
this.helperItem.WhereIn<K, P>(lambda, "in", helper);
return this;
}
#endregion
#region Union/Union All 语句
/// <summary>
/// Union 联合查询
/// </summary>
/// <typeparam name="K"></typeparam>
/// <param name="helper"></param>
/// <returns></returns>
public TQueryHelper<T> Union<K>(TQueryHelper<K> helper) where K : class
{
this.helperItem.Union<K>(helper);
return this;
}
#endregion
#region (/) 括号
/// <summary>
/// 生成左括号
/// </summary>
/// <returns></returns>
public TQueryHelper<T> BreakLeft()
{
this.helperItem.BreakLeft();
return this;
}
/// <summary>
/// 生成右括号
/// </summary>
/// <returns></returns>
public TQueryHelper<T> BreakRight()
{
this.helperItem.BreakRight();
return this;
}
#endregion
#region 生成查询语句，出口点
/// <summary>
/// 生成查询语句
/// </summary>
/// <param name="withNoLock">是否添加 with(nolock) 语句</param>
/// <returns></returns>
public string ToSql(bool withNoLock = true)
{
return this.helperItem.ToSql(withNoLock);
}
#endregion
#endregion
}
}