/// <summary>
/// 根据字典,返回分页需要是sql语句
/// </summary>
/// <param name="dataSql">返回查询datatable的sql</param>
/// <param name="countSql">返回查询数量的sql</param>
/// <param name="dic">保存条件的字典,key为字段名称,关键字:数据库字段名__q(时间起),数据库字段名__z(时间止),数据库字段名__or(条件为or),数据库字段名__like(查询为like)</param>
/// <param name="order">排序字段:如果不需要排序可不传入数据,也可以传入null或者"";如果需要排序则写入order by之后的内容</param>
/// <param name="pageCurrent">当前页</param>
/// <param name="pageSize">每页显示的数量</param>
/// <param name="tableName">表名</param>
/// <param name="columnName">列名,默认为*,查询所有</param>
/// <returns></returns>
public void GetSelectPageSql(out string dataSql, out string countSql, Dictionary <string, object> dic, String order, int pageCurrent, int pageSize = 10, string tableName = "", string columnName = "*")
{
dataSql = string.Empty;
countSql = string.Empty;
try
{
string strTable = InternalBase <T> .GetTableName(tableName);
string strCondition = InternalBase <T> .GetConditionByDIC(dic);
string strOrder = InternalBase <T> .AddOrder(order);//获取排序字段.
int number;
InternalBase <T> .GetPageNumber(pageCurrent, pageSize, out number); //获取分页信息
string tt, ttt;
InternalBase <T> .GetColumnName(columnName, out tt, out ttt);
dataSql = "SELECT " + columnName + " FROM (SELECT " + ttt + ", ROWNUM AS rowno FROM ( SELECT " + tt + " FROM " + strTable + " t " + strCondition + strOrder + ") tt WHERE ROWNUM <= " + (number + pageSize) + ") table_alias WHERE table_alias.rowno >= " + (number + 1);
countSql = "select count (*) from " + strTable + strCondition;
}
catch (Exception ex)
{
LogHelper.WriteLog(ex, dataSql + "\r\n" + countSql);
}
}
/// <summary>
/// 查询显示分页后的列表数据.根据字典生成条件,用于时间条件为时间段时.
/// </summary>
/// <param name="dic">保存条件的字典,key为字段名称,关键字:数据库字段名__q(时间起),数据库字段名__z(时间止),数据库字段名__or(条件为or),数据库字段名__like(查询为like)</param>
/// <param name="order">排序字段:如果不需要排序可不传入数据,也可以传入null或者"";如果需要排序则写入order by之后的内容</param>
/// <param name="pageCurrent">当前页</param>
/// <param name="pageSize">每页显示的数量</param>
/// <param name="tableName">表名</param>
/// <param name="columnName">列名,默认为*,查询所有</param>
/// <returns></returns>
public DataTable SelectPage(Dictionary <string, object> dic, String order, int pageCurrent, int pageSize = 10, string tableName = "", string columnName = "*")
{
string sql = string.Empty;
try
{
string strTable = InternalBase <T> .GetTableName(tableName);
string strCondition = InternalBase <T> .GetConditionByDIC(dic);
string strOrder = InternalBase <T> .AddOrder(order);//获取排序字段.
int number;
InternalBase <T> .GetPageNumber(pageCurrent, pageSize, out number); //获取分页信息
string tt, ttt;
InternalBase <T> .GetColumnName(columnName, out tt, out ttt);
sql = "SELECT " + columnName + " FROM (SELECT " + ttt + ", ROWNUM AS rowno FROM ( SELECT " + tt + " FROM " + strTable + " t " + strCondition + strOrder + ") tt WHERE ROWNUM <= " + (number + pageSize) + ") table_alias WHERE table_alias.rowno >= " + (number + 1);
return(dbl.ExecuteQuery(sql));
}
catch (Exception ex)
{
LogHelper.WriteLog(ex, sql);
return(null);
}
}
/// <summary>
/// 获取查询语句
/// </summary>
/// <param name="strTable">表名</param>
/// <param name="pageCurrent">当前页</param>
/// <param name="pageSize">每页显示的数量</param>
/// <param name="strOrder">排序字段:如果不需要排序可不传入数据,也可以传入null或者"";如果需要排序则写入order by之后的内容</param>
/// <param name="strCondition">条件,需要填写where</param>
/// <param name="columnName">列名,默认为*,查询所有</param>
/// <returns></returns>
internal string GetSelectSql(string strTable, int pageCurrent, int pageSize, string strOrder, string strCondition, string columnName)
{
string sql = string.Empty;
try
{
int number;
InternalBase <T> .GetPageNumber(pageCurrent, pageSize, out number);//获取分页信息
string tt, ttt;
InternalBase <T> .GetColumnName(columnName, out tt, out ttt);
sql = "SELECT " + columnName + " FROM (SELECT " + ttt + ", ROWNUM AS rowno FROM ( SELECT " + tt + " FROM " + strTable + " t " + strCondition + strOrder + ") tt WHERE ROWNUM <= " + (number + pageSize) + ") table_alias WHERE table_alias.rowno >= " + (number + 1);
return(sql);
}
catch (Exception ex)
{
LogHelper.WriteLog(ex + "sql:" + sql);
throw;
}
}
