/// <summary>
/// SqlHelper操作类
/// </summary>
public sealed partial class SqlHelper
{
/// <summary>
/// 批量操作每批次记录数
/// </summary>
public static int BatchSize = 2000;
/// <summary>
/// 超时时间
/// </summary>
public static int CommandTimeOut = 600;
/// <summary>
/// 数据库连接字符串
/// </summary>
private string ConnectionString { get; set; }
/// <summary>
/// Instance
/// </summary>
public static SqlHelper Instance = new SqlHelper("server=.;database=Abc;user id=dev;password=123");
/// <summary>
///初始化SqlHelper实例
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
private SqlHelper(string connectionString)
{
this.ConnectionString = connectionString;
}
#region 实例方法
#region ExecuteNonQuery
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public int ExecuteNonQuery(string commandText, params SqlParameter[] parms)
{
return ExecuteNonQuery(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public int ExecuteNonQuery(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteNonQuery(ConnectionString, commandType, commandText, parms);
}
#endregion ExecuteNonQuery
#region ExecuteScalar
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <typeparam name="T">返回对象类型</typeparam>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public T ExecuteScalar<T>(string commandText, params SqlParameter[] parms)
{
return ExecuteScalar<T>(ConnectionString, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public object ExecuteScalar(string commandText, params SqlParameter[] parms)
{
return ExecuteScalar(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public object ExecuteScalar(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteScalar(ConnectionString, commandType, commandText, parms);
}
#endregion ExecuteScalar
#region ExecuteDataReader
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private SqlDataReader ExecuteDataReader(string commandText, params SqlParameter[] parms)
{
return ExecuteDataReader(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private SqlDataReader ExecuteDataReader(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataReader(ConnectionString, commandType, commandText, parms);
}
#endregion
#region ExecuteDataRow
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行</returns>
public DataRow ExecuteDataRow(string commandText, params SqlParameter[] parms)
{
return ExecuteDataRow(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行</returns>
public DataRow ExecuteDataRow(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataRow(ConnectionString, commandType, commandText, parms);
}
#endregion ExecuteDataRow
#region ExecuteDataTable
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public DataTable ExecuteDataTable(string commandText, params SqlParameter[] parms)
{
return ExecuteDataTable(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public DataTable ExecuteDataTable(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(ConnectionString, commandType, commandText, parms).Tables[0];
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="sql">SQL语句</param>
/// <param name="order">排序SQL,如"ORDER BY ID DESC"</param>
/// <param name="pageSize">每页记录数</param>
/// <param name="pageIndex">页索引</param>
/// <param name="parms">查询参数</param>
/// <param name="query">查询SQL</param>
/// <returns></returns>
public DataTable ExecutePageDataTable(string sql, string order, int pageSize, int pageIndex, SqlParameter[] parms = null, string query = null, string cte = null)
{
return ExecutePageDataTable(sql, order, pageSize, pageIndex, parms, query, cte);
}
#endregion ExecuteDataTable
#region ExecuteDataSet
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public DataSet ExecuteDataSet(string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(ConnectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public DataSet ExecuteDataSet(CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(ConnectionString, commandType, commandText, parms);
}
#endregion ExecuteDataSet
#region 批量操作
/// <summary>
/// 大批量数据插入
/// </summary>
/// <param name="table">数据表</param>
public void BulkInsert(DataTable table)
{
BulkInsert(ConnectionString, table);
}
/// <summary>
/// 使用MySqlDataAdapter批量更新数据
/// </summary>
/// <param name="table">数据表</param>
public void BatchUpdate(DataTable table)
{
BatchUpdate(ConnectionString, table);
}
/// <summary>
/// 分批次批量删除数据
/// </summary>
/// <param name="sql">SQL语句</param>
/// <param name="batchSize">每批次删除记录行数</param>
/// <param name="interval">批次执行间隔(秒)</param>
public void BatchDelete(string sql, int batchSize = 1000, int interval = 1)
{
BatchDelete(ConnectionString, sql, batchSize, interval);
}
/// <summary>
/// 分批次批量更新数据
/// </summary>
/// <param name="sql">SQL语句</param>
/// <param name="batchSize">每批次更新记录行数</param>
/// <param name="interval">批次执行间隔(秒)</param>
public void BatchUpdate(string sql, int batchSize = 1000, int interval = 1)
{
BatchUpdate(ConnectionString, sql, batchSize, interval);
}
#endregion 批量操作
#endregion 实例方法
#region 静态方法
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] parms)
{
if (connection.State != ConnectionState.Open) connection.Open();
command.Connection = connection;
command.CommandTimeout = CommandTimeOut;
// 设置命令文本(存储过程名或SQL语句)
command.CommandText = commandText;
// 分配事务
if (transaction != null)
{
command.Transaction = transaction;
}
// 设置命令类型.
command.CommandType = commandType;
if (parms != null && parms.Length > 0)
{
//预处理SqlParameter参数数组，将为NULL的参数赋值为DBNull.Value;
foreach (SqlParameter parameter in parms)
{
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
}
command.Parameters.AddRange(parms);
}
}
#region ExecuteNonQuery
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public static int ExecuteNonQuery(string connectionString, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
return ExecuteNonQuery(connection, CommandType.Text, commandText, parms);
}
}
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
return ExecuteNonQuery(connection, commandType, commandText, parms);
}
}
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteNonQuery(connection, null, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteNonQuery(transaction.Connection, transaction, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回影响的行数
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回影响的行数</returns>
private static int ExecuteNonQuery(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
SqlCommand command = new SqlCommand();
PrepareCommand(command, connection, transaction, commandType, commandText, parms);
int retval = command.ExecuteNonQuery();
command.Parameters.Clear();
return retval;
}
#endregion ExecuteNonQuery
#region ExecuteScalar
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <typeparam name="T">返回对象类型</typeparam>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public static T ExecuteScalar<T>(string connectionString, string commandText, params SqlParameter[] parms)
{
object result = ExecuteScalar(connectionString, commandText, parms);
if (result != null)
{
return (T)Convert.ChangeType(result, typeof(T)); ;
}
return default(T);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public static object ExecuteScalar(string connectionString, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
return ExecuteScalar(connection, CommandType.Text, commandText, parms);
}
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
return ExecuteScalar(connection, commandType, commandText, parms);
}
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteScalar(connection, null, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteScalar(transaction.Connection, transaction, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行第一列
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一行第一列</returns>
private static object ExecuteScalar(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
SqlCommand command = new SqlCommand();
PrepareCommand(command, connection, transaction, commandType, commandText, parms);
object retval = command.ExecuteScalar();
command.Parameters.Clear();
return retval;
}
#endregion ExecuteScalar
#region ExecuteDataReader
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private static SqlDataReader ExecuteDataReader(string connectionString, string commandText, params SqlParameter[] parms)
{
SqlConnection connection = new SqlConnection(connectionString);
return ExecuteDataReader(connection, null, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private static SqlDataReader ExecuteDataReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
SqlConnection connection = new SqlConnection(connectionString);
return ExecuteDataReader(connection, null, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private static SqlDataReader ExecuteDataReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataReader(connection, null, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private static SqlDataReader ExecuteDataReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataReader(transaction.Connection, transaction, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回只读数据集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回只读数据集</returns>
private static SqlDataReader ExecuteDataReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
SqlCommand command = new SqlCommand();
PrepareCommand(command, connection, transaction, commandType, commandText, parms);
return command.ExecuteReader(CommandBehavior.CloseConnection);
}
#endregion
#region ExecuteDataRow
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>,返回结果集中的第一行</returns>
public static DataRow ExecuteDataRow(string connectionString, string commandText, params SqlParameter[] parms)
{
DataTable dt = ExecuteDataTable(connectionString, CommandType.Text, commandText, parms);
return dt.Rows.Count > 0 ? dt.Rows[0] : null;
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>,返回结果集中的第一行</returns>
public static DataRow ExecuteDataRow(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
DataTable dt = ExecuteDataTable(connectionString, commandType, commandText, parms);
return dt.Rows.Count > 0 ? dt.Rows[0] : null;
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>,返回结果集中的第一行</returns>
public static DataRow ExecuteDataRow(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
DataTable dt = ExecuteDataTable(connection, commandType, commandText, parms);
return dt.Rows.Count > 0 ? dt.Rows[0] : null;
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一行
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>,返回结果集中的第一行</returns>
public static DataRow ExecuteDataRow(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
DataTable dt = ExecuteDataTable(transaction, commandType, commandText, parms);
return dt.Rows.Count > 0 ? dt.Rows[0] : null;
}
#endregion ExecuteDataRow
#region ExecuteDataTable
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public static DataTable ExecuteDataTable(string connectionString, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(connectionString, CommandType.Text, commandText, parms).Tables[0];
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public static DataTable ExecuteDataTable(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(connectionString, commandType, commandText, parms).Tables[0];
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public static DataTable ExecuteDataTable(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(connection, commandType, commandText, parms).Tables[0];
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集中的第一个数据表</returns>
public static DataTable ExecuteDataTable(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(transaction, commandType, commandText, parms).Tables[0];
}
/// <summary>
/// 获取空表结构
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="tableName">数据表名称</param>
/// <returns>返回结果集中的第一个数据表</returns>
public static DataTable ExecuteEmptyDataTable(string connectionString, string tableName)
{
return ExecuteDataSet(connectionString, CommandType.Text, string.Format("select * from {0} where 1=-1", tableName)).Tables[0];
}
/// <summary>
/// 执行SQL语句,返回结果集中的第一个数据表
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="sql">SQL语句</param>
/// <param name="order">排序SQL,如"ORDER BY ID DESC"</param>
/// <param name="pageSize">每页记录数</param>
/// <param name="pageIndex">页索引</param>
/// <param name="parms">查询参数</param>
/// <param name="query">查询SQL</param>
/// <param name="cte">CTE表达式</param>
/// <returns></returns>
public static DataTable ExecutePageDataTable(string connectionString, string sql, string order, int pageSize, int pageIndex, SqlParameter[] parms = null, string query = null, string cte = null)
{
string psql = string.Format(@"
{3}
SELECT *
FROM (
SELECT ROW_NUMBER() OVER (ORDER BY {1}) RowNumber,*
FROM (
{0}
) t
WHERE 1 = 1 {2}
) t
WHERE RowNumber BETWEEN @RowNumber_Begin
AND @RowNumber_End", sql, order, query, cte);
List<SqlParameter> paramlist = new List<SqlParameter>()
{
new SqlParameter("@RowNumber_Begin", SqlDbType.Int){ Value = (pageIndex - 1) * pageSize + 1 },
new SqlParameter("@RowNumber_End", SqlDbType.Int){ Value = pageIndex * pageSize }
};
if (parms != null) paramlist.AddRange(parms);
return ExecuteDataTable(connectionString, psql, paramlist.ToArray());
}
#endregion ExecuteDataTable
#region ExecuteDataSet
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandText">SQL语句</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public static DataSet ExecuteDataSet(string connectionString, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(connectionString, CommandType.Text, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public static DataSet ExecuteDataSet(string connectionString, CommandType commandType, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
return ExecuteDataSet(connection, commandType, commandText, parms);
}
}
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public static DataSet ExecuteDataSet(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(connection, null, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
public static DataSet ExecuteDataSet(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
return ExecuteDataSet(transaction.Connection, transaction, commandType, commandText, parms);
}
/// <summary>
/// 执行SQL语句,返回结果集
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="transaction">事务</param>
/// <param name="commandType">命令类型(存储过程,命令文本, 其它.)</param>
/// <param name="commandText">SQL语句或存储过程名称</param>
/// <param name="parms">查询参数</param>
/// <returns>返回结果集</returns>
private static DataSet ExecuteDataSet(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] parms)
{
SqlCommand command = new SqlCommand();
PrepareCommand(command, connection, transaction, commandType, commandText, parms);
SqlDataAdapter adapter = new SqlDataAdapter(command);
DataSet ds = new DataSet();
adapter.Fill(ds);
if (commandText.IndexOf("@") > 0)
{
commandText = commandText.ToLower();
int index = commandText.IndexOf("where ");
if (index < 0)
{
index = commandText.IndexOf("\nwhere");
}
if (index > 0)
{
ds.ExtendedProperties.Add("SQL", commandText.Substring(0, index - 1)); //将获取的语句保存在表的一个附属数组里，方便更新时生成CommandBuilder
}
else
{
ds.ExtendedProperties.Add("SQL", commandText); //将获取的语句保存在表的一个附属数组里，方便更新时生成CommandBuilder
}
}
else
{
ds.ExtendedProperties.Add("SQL", commandText); //将获取的语句保存在表的一个附属数组里，方便更新时生成CommandBuilder
}
foreach (DataTable dt in ds.Tables)
{
dt.ExtendedProperties.Add("SQL", ds.ExtendedProperties["SQL"]);
}
command.Parameters.Clear();
return ds;
}
#endregion ExecuteDataSet
#region 批量操作
/// <summary>
/// 大批量数据插入
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="table">数据表</param>
public static void BulkInsert(string connectionString, DataTable table)
{
if (string.IsNullOrEmpty(table.TableName)) throw new Exception("DataTable.TableName属性不能为空");
using (SqlBulkCopy bulk = new SqlBulkCopy(connectionString))
{
bulk.BatchSize = BatchSize;
bulk.BulkCopyTimeout = CommandTimeOut;
bulk.DestinationTableName = table.TableName;
foreach (DataColumn col in table.Columns)
{
bulk.ColumnMappings.Add(col.ColumnName, col.ColumnName);
}
bulk.WriteToServer(table);
bulk.Close();
}
}
/// <summary>
/// 使用MySqlDataAdapter批量更新数据
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="table">数据表</param>
public static void BatchUpdate(string connectionString, DataTable table)
{
SqlConnection connection = new SqlConnection(connectionString);
SqlCommand command = connection.CreateCommand();
command.CommandTimeout = CommandTimeOut;
command.CommandType = CommandType.Text;
SqlDataAdapter adapter = new SqlDataAdapter(command);
SqlCommandBuilder commandBulider = new SqlCommandBuilder(adapter);
commandBulider.ConflictOption = ConflictOption.OverwriteChanges;
SqlTransaction transaction = null;
try
{
connection.Open();
transaction = connection.BeginTransaction();
//设置批量更新的每次处理条数
adapter.UpdateBatchSize = BatchSize;
//设置事物
adapter.SelectCommand.Transaction = transaction;
if (table.ExtendedProperties["SQL"] != null)
{
adapter.SelectCommand.CommandText = table.ExtendedProperties["SQL"].ToString();
}
adapter.Update(table);
transaction.Commit();/////提交事务
}
catch (SqlException ex)
{
if (transaction != null) transaction.Rollback();
throw ex;
}
finally
{
connection.Close();
connection.Dispose();
}
}
/// <summary>
/// 分批次批量删除数据
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="sql">SQL语句</param>
/// <param name="batchSize">每批次更新记录行数</param>
/// <param name="interval">批次执行间隔(秒)</param>
public static void BatchDelete(string connectionString, string sql, int batchSize = 1000, int interval = 1)
{
sql = sql.ToLower();
if (batchSize < 1000) batchSize = 1000;
if (interval < 1) interval = 1;
while (ExecuteScalar(connectionString, sql.Replace("delete", "select top 1 1")) != null)
{
ExecuteNonQuery(connectionString, CommandType.Text, sql.Replace("delete", string.Format("delete top ({0})", batchSize)));
System.Threading.Thread.Sleep(interval * 1000);
}
}
/// <summary>
/// 分批次批量更新数据
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="sql">SQL语句</param>
/// <param name="batchSize">每批次更新记录行数</param>
/// <param name="interval">批次执行间隔(秒)</param>
public static void BatchUpdate(string connectionString, string sql, int batchSize = 1000, int interval = 1)
{
if (batchSize < 1000) batchSize = 1000;
if (interval < 1) interval = 1;
string existsSql = Regex.Replace(sql, @"[\w\s.=,']*from", "select top 1 1 from", RegexOptions.IgnoreCase);
existsSql = Regex.Replace(existsSql, @"set[\w\s.=,']* where", "where", RegexOptions.IgnoreCase);
existsSql = Regex.Replace(existsSql, @"update", "select top 1 1 from", RegexOptions.IgnoreCase);
while (ExecuteScalar<int>(connectionString, existsSql) != 0)
{
ExecuteNonQuery(connectionString, CommandType.Text, Regex.Replace(sql, "update", string.Format("update top ({0})", batchSize), RegexOptions.IgnoreCase));
System.Threading.Thread.Sleep(interval * 1000);
}
}
#endregion 批量操作
#endregion 静态方法
}
}
