diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Kdbndp/DbMaintenance/KdbndpDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Kdbndp/DbMaintenance/KdbndpDbMaintenance.cs
index 9201a7928..84b93abc6 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Kdbndp/DbMaintenance/KdbndpDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Kdbndp/DbMaintenance/KdbndpDbMaintenance.cs
@@ -68,7 +68,9 @@ namespace SqlSugar
                     sql = sql.Replace("pkey on pcolumn.table_name = pkey.relname", "pkey on pcolumn.table_name::text = pkey.relname::text ");
                 }
                 else if (IsMySql()) 
-                { 
+                {
+                    sql = sql.Replace("UPPER(", "pg_catalog.upper(",StringComparison.OrdinalIgnoreCase);
+                    sql = sql.Replace("lower(", "pg_catalog.lower(", StringComparison.OrdinalIgnoreCase);
                     sql = sql.Replace("pcolumn.udt_name", "pcolumn.data_type");
                 }
                 return sql;
@@ -245,6 +247,11 @@ namespace SqlSugar
                 {
                     sql = sql.Replace("sys_", "pg_");
                 }
+                if (IsSqlServerModel() || IsMySql()) 
+                {
+                    sql = sql.Replace("UPPER(", "pg_catalog.upper(", StringComparison.OrdinalIgnoreCase);
+                    sql = sql.Replace("lower(", "pg_catalog.lower(", StringComparison.OrdinalIgnoreCase);
+                }
                 return sql;
             }
         }
@@ -352,6 +359,11 @@ WHERE tgrelid = '" + tableName + "'::regclass");
             {
                 sql = sql.Replace("sys_", "pg_");
             }
+            if (IsSqlServerModel() || IsMySql()) 
+            {
+                sql = sql.Replace("UPPER(", "pg_catalog.upper(", StringComparison.OrdinalIgnoreCase);
+                sql = sql.Replace("lower(", "pg_catalog.lower(", StringComparison.OrdinalIgnoreCase);
+            }
             return this.Context.Ado.SqlQuery<string>(sql);
         }
         public override List<string> GetProcList(string dbName)
@@ -361,6 +373,11 @@ WHERE tgrelid = '" + tableName + "'::regclass");
             {
                 sql = sql.Replace("sys_", "pg_");
             }
+            if (IsSqlServerModel() || IsMySql())
+            {
+                sql = sql.Replace("UPPER(", "pg_catalog.upper(", StringComparison.OrdinalIgnoreCase);
+                sql = sql.Replace("lower(", "pg_catalog.lower(", StringComparison.OrdinalIgnoreCase);
+            }
             return this.Context.Ado.SqlQuery<string>(sql);
         }
         private string GetSchema()
@@ -440,10 +457,11 @@ WHERE tgrelid = '" + tableName + "'::regclass");
         public override bool IsAnyTable(string tableName, bool isCache = true)
         {
             var sql = $"select count(*) from information_schema.tables where UPPER(table_schema)=UPPER('{GetSchema()}') and UPPER(table_type)=UPPER('BASE TABLE') and UPPER(table_name)=UPPER('{tableName.ToUpper(IsUpper)}')";
-            if (IsSqlServerModel()) 
+            if (IsSqlServerModel()||IsMySql()) 
             {
                 sql = $"select count(*) from information_schema.tables where  UPPER(table_schema)=UPPER('{GetSchema()}') and  pg_catalog.UPPER(table_name)=pg_catalog.UPPER('{tableName.ToUpper(IsUpper)}')";
             }
+
             return this.Context.Ado.GetInt(sql)>0;
         }