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sql 查询优化：COUNT(*)改成COUNT(1)

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夏菊
2025-11-06 18:10:29 +08:00
parent c54c470818
commit c7187ebd36
16 changed files with 48 additions and 48 deletions
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SGGL/FineUIPro.Web/DataShow/SecurityRisk.aspx.cs
+4 -4
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@@ -253,14 +253,14 @@ namespace FineUIPro.Web.DataShow
private void OutputSummaryData()
{
string strSql = @"select ProjectId,ProjectCode, ProjectName ,
isnull((select count(*) from Hazard_HazardSelectedItem as a
isnull((select count(1) from Hazard_HazardSelectedItem as a
where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
and (a.HazardLevel='1' or a.HazardLevel=(select top 1 RiskLevelId from Base_RiskLevel where RiskLevel='1'))),0) as Count1,
isnull((select count(*) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
isnull((select count(1) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
and (a.HazardLevel='2' or a.HazardLevel=(select top 1 RiskLevelId from Base_RiskLevel where RiskLevel='2'))),0) as Count2,
isnull((select count(*) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
isnull((select count(1) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
and (a.HazardLevel='3' or a.HazardLevel=(select top 1 RiskLevelId from Base_RiskLevel where RiskLevel='3'))),0) as Count3,
isnull((select count(*) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
isnull((select count(1) from Hazard_HazardSelectedItem as a where (a.IsStart=1 or a.State = '1') and a.ProjectId=p.ProjectId
and (a.HazardLevel='4' or a.HazardLevel=(select top 1 RiskLevelId from Base_RiskLevel where RiskLevel='4'))),0) as Count4
from Base_Project as P where ProjectState =1 ";
List<SqlParameter> listStr = new List<SqlParameter>();