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db.Fastest oracle

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sunkaixuna
2021-11-21 02:15:51 +08:00
parent 121e4690b3
commit cf3a098878
1 changed files with 18 additions and 0 deletions
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18
Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs
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@@ -2,6 +2,7 @@
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
@@ -9,6 +10,23 @@ namespace SqlSugar
{
public class OracleFastBuilder : FastBuilder, IFastBuilder
{
public override string UpdateSql { get; set; } = "UPDATE (SELECT A.NAME ANAME,B.NAME BNAME FROM A,B WHERE A.ID=B.ID)SET ANAME = BNAME;";
public override async Task CreateTempAsync<T>(DataTable dt)
{
dt.TableName = "T" + SnowFlakeSingle.instance.getID().ToString().Substring(4,16);
var sql = this.Context.Queryable<T>().Where(it => false).Select("*").ToSql().Key;
await this.Context.Ado.ExecuteCommandAsync($"create global temporary table {dt.TableName} as {sql} ");
var xxx = this.Context.Queryable<T>().AS(dt.TableName).ToList();
}
public override async Task<int> UpdateByTempAsync(string tableName, string tempName, string[] updateColumns, string[] whereColumns)
{
Check.ArgumentNullException(!updateColumns.Any(), "update columns count is 0");
Check.ArgumentNullException(!whereColumns.Any(), "where columns count is 0");
var sets = string.Join(",", updateColumns.Select(it => $"TM.{it}=TE.{it}"));
var wheres = string.Join(",", whereColumns.Select(it => $"TM.{it}=TE.{it}"));
string sql = string.Format(UpdateSql, sets, tableName, tempName, wheres);
return await this.Context.Ado.ExecuteCommandAsync(sql);
}
private OracleBulkCopy GetBulkCopyInstance()
{