C# »ñÈ¡ SQL·þÎñÆ÷Áбí
#region µÃµ½ËùÓб¾µØÍøÂçÖпÉʹÓõÄSQL·þÎñÆ÷Áбí
/// <summary>
/// µÃµ½ËùÓб¾µØÍøÂçÖпÉʹÓõÄSQL·þÎñÆ÷Áбí
/// </summary>
/// <param name="p_strServerList">·þÎñÆ÷Áбí</param>
/// <returns></returns>
public static bool GetServers(ref string [] p_strServerList)
{
try
{
SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass();
SQLDMO.NameList sqlServers = sqlApp.ListAvailableSQLServers();
if(sqlServers.Count > 0)
{
p_strServerList = new string[sqlServers.Count];
for(int i=0;i<sqlServers.Count;i++)
{
string srv = sqlServers.Item(i + 1);
if(srv != null)
{
p_strServerList[i] = srv;
}
}
}
return true;
}
catch(Exception ex)
{
throw ex;
}
}
#endregion
#region µÃµ½Ö¸¶¨SQL·þÎñÆ÷ËùÓÐÊý¾Ý¿âµÄÁбí
/// <summary>
/// µÃµ½Ö¸¶¨SQL·þÎñÆ÷ËùÓÐÊý¾Ý¿âµÄÁбí
/// </summary>
/// <param name="p_strDataBas
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UNION ALL
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MySQL: TRIM(), RTRIM(), LTRIM()
Oracle: RTRIM(), LTRIM()
SQL Server: RTRIM(), LTRIM()
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Select
SELECT "À¸Î»" from "±í¸ñÃû"
Distinct
SELECT DISTINCT "À¸Î»"
from "±í¸ñÃû"
......
using (con)
{
con.Open();
String sqltext = "select * from emp where empno=@empno";
......