diff --git a/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar.OceanBaseForOracle/OceanBase/SqlBuilder/OceanBaseForOracleExpressionContext.cs
index 31c8bc592a0c118d69155e4011db5f988de07022..b3f4e51df1872b1704df2d6bae94487250e0f763 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
         {
diff --git a/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar.TDSQLForPGODBC/TDSQLForPG/SqlBuilder/TDSQLForPGODBCExpressionContext.cs
index 05cb81a82b1881f2fdabf9fbe6619142b01c71be..3728c75dbbde118e96ecb4f0c611c240d0a1bd1b 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
         {
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
index 534fa0a5df7b8fc591ac0da5acd681ab140df054..978122ae561f452a40d69502da07d0ae26e51b3c 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Subquery/Items/SubTake.cs
@@ -55,19 +55,19 @@ namespace SqlSugar
         public string GetValue(Expression expression)
         {
             var numExp = (expression as MethodCallExpression).Arguments[0];
-            var num =1;
-            if (ExpressionTool.GetParameters(numExp).Any()) 
-            { 
+            var num = 1;
+            if (ExpressionTool.GetParameters(numExp).Any())
+            {
                 var copyContext = this.Context.GetCopyContextWithMapping();
                 copyContext.IsSingle = false;
                 copyContext.Resolve(numExp, ResolveExpressType.WhereMultiple);
                 copyContext.Result.GetString();
             }
-            else 
+            else
             {
                 num = ExpressionTool.DynamicInvoke(numExp).ObjToInt();
             }
-            var take = (expression as MethodCallExpression); 
+            var take = (expression as MethodCallExpression);
             if (this.Context is SqlServerExpressionContext || this.Context.GetType().Name.Contains("Access"))
             {
                 return "TOP " + num;
@@ -86,7 +86,7 @@ namespace SqlSugar
                 {
                     this.Context.Case.HasWhere = this.HasWhere;
                 }
-                if (this?.Context?.Case?.Num != 1)
+                if (this?.Context?.Case?.Num > 1)
                 {
                     this.Context.Case.Num = num;
                 }