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Optimize the performance of count

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sunkaixuan 2025-08-15 09:19:18 +08:00
parent 82dff2f2fd
commit a6e33b73de
2 changed files with 18 additions and 0 deletions
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9
Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSql.cs
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@ -128,6 +128,15 @@ namespace SqlSugar
}
return this.Clone().Select<int>(" COUNT(1) ").ToList().FirstOrDefault();
}
if (this.QueryBuilder.AsTables?.Any() == true)
{
var tableName = this.QueryBuilder.AsTables.FirstOrDefault().Value;
if (tableName.StartsWith(" (SELECT * FROM ("))
{
var list = this.Clone().Select<int>(" COUNT(1) ").ToList();
return list.FirstOrDefault();
}
}
MappingTableList expMapping;
int result;
_CountBegin(out expMapping, out result);

9
Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableExecuteSqlAsync.cs
View File

@ -157,6 +157,15 @@ namespace SqlSugar
var list = await this.Clone().Select<int>(" COUNT(1) ").ToListAsync();
return list.FirstOrDefault();
}
if (this.QueryBuilder.AsTables?.Any() == true)
{
var tableName= this.QueryBuilder.AsTables.FirstOrDefault().Value;
if (tableName.StartsWith(" (SELECT * FROM ("))
{
var list = await this.Clone().Select<int>(" COUNT(1) ").ToListAsync();
return list.FirstOrDefault();
}
}
MappingTableList expMapping;
int result;
_CountBegin(out expMapping, out result);