diff --git a/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs
index 31c8bc592a0c118d69155e4011db5f988de07022..5fc03c9aaf4a6e98b932085b4da5b79cbdfe5ccf 100644
--- a/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs
@@ -16,6 +16,7 @@ namespace SqlSugar.OceanBaseForOracle
         public OceanBaseForOracleExpressionContext()
         {
             base.DbMehtods = new OceanBaseForOracleMethod();
+            base.Case = new ExpressionContextCase();
         }
         public override string SqlParameterKeyWord
         {
@@ -76,7 +77,7 @@ namespace SqlSugar.OceanBaseForOracle
         public override string GetLimit()
         {
             int num = 1;
-            if (this.Case?.Num != 1)
+            if (this.Case?.Num > 1)
             {
                 num = this.Case.Num;
             }
diff --git a/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs
index 05cb81a82b1881f2fdabf9fbe6619142b01c71be..c8b713ef9fb69d0a85038a976a1dc9a3349b791d 100644
--- a/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs
@@ -8,6 +8,7 @@ namespace SqlSugar.TDSQLForPGODBC
         public TDSQLForPGODBCExpressionContext()
         {
             base.DbMehtods = new TDSQLForPGODBCMethod();
+            base.Case = new ExpressionContextCase();
         }
         public override string SqlTranslationLeft
         {
@@ -134,7 +135,7 @@ namespace SqlSugar.TDSQLForPGODBC
         public override string GetLimit()
         {
             int num = 1;
-            if (this.Case.Num != 1)
+            if (this.Case.Num > 1)
             {
                 num = this.Case.Num;
             }
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
index 534fa0a5df7b8fc591ac0da5acd681ab140df054..3270810e6a73576b16ad0603e169fdd8fa75d582 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
@@ -82,12 +82,9 @@ namespace SqlSugar
             }
             else if (this.Context.GetLimit() != null)
             {
-                if (this?.Context?.Case?.HasWhere == true)
+                if (this?.Context?.Case != null)
                 {
                     this.Context.Case.HasWhere = this.HasWhere;
-                }
-                if (this?.Context?.Case?.Num != 1)
-                {
                     this.Context.Case.Num = num;
                 }
                 return this.Context.GetLimit();
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
index 312ed677be2d3bcca758575710b7ee99db66c7ba..a9396d65ad1bfad75c0b494617b43feeff6208fd 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
@@ -67,7 +67,7 @@ namespace SqlSugar
             }
             else if (this.Context.GetLimit()!=null)
             {
-                if (this?.Context?.Case?.HasWhere == true)
+                if (this?.Context?.Case != null)
                 {
                     this.Context.Case.HasWhere = this.HasWhere;
                 }