diff --git a/source/libs/parser/inc/sql.y b/source/libs/parser/inc/sql.y
index 0296b1cde9..a7577c4e4b 100644
--- a/source/libs/parser/inc/sql.y
+++ b/source/libs/parser/inc/sql.y
@@ -30,7 +30,6 @@
 #include "tmsgtype.h"
 #include "ttoken.h"
 #include "ttokendef.h"
-//#include "tutil.h"
 #include "tvariant.h"
 }
 
@@ -784,10 +783,8 @@ cmd ::= ALTER TABLE ids(X) cpxName(F) ADD COLUMN columnlist(A).     {
 
 cmd ::= ALTER TABLE ids(X) cpxName(F) DROP COLUMN ids(A).     {
     X.n += F.n;
-
     toTSDBType(A.type);
     SArray* K = tListItemAppendToken(NULL, &A, -1);
-
     SAlterTableInfo* pAlterTable = tSetAlterTableInfo(&X, NULL, K, TSDB_ALTER_TABLE_DROP_COLUMN, -1);
     setSqlInfo(pInfo, pAlterTable, NULL, TSDB_SQL_ALTER_TABLE);
 }
diff --git a/source/libs/parser/src/astValidate.c b/source/libs/parser/src/astValidate.c
index 545f2dd838..7fbc7e2782 100644
--- a/source/libs/parser/src/astValidate.c
+++ b/source/libs/parser/src/astValidate.c
@@ -2017,12 +2017,18 @@ int32_t extractFunctionParameterInfo(SQueryStmtInfo* pQueryInfo, int32_t tokenId
 static int32_t checkForkParam(tSqlExpr* pSqlExpr, size_t k, SMsgBuf* pMsgBuf) {
   const char* msg1 = "invalid parameters";
 
+  SArray* pParamList = pSqlExpr->Expr.paramList;
+
   if (k == 0) {
-    if (pSqlExpr->Expr.paramList != NULL && taosArrayGetSize(pSqlExpr->Expr.paramList) != 0) {
+    if (pParamList != NULL && taosArrayGetSize(pParamList) != 0) {
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }
+  } else if (k == 1) {
+    if (!(pParamList == NULL || taosArrayGetSize(pParamList) == k)) {
+      return buildInvalidOperationMsg(pMsgBuf, msg1);;
+    }
   } else {
-    if (pSqlExpr->Expr.paramList == NULL || taosArrayGetSize(pSqlExpr->Expr.paramList) != k) {
+    if (pParamList != NULL && taosArrayGetSize(pParamList) != k) {
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }
   }
diff --git a/source/libs/parser/test/parserTests.cpp b/source/libs/parser/test/parserTests.cpp
index 45b8a3627b..932613301b 100644
--- a/source/libs/parser/test/parserTests.cpp
+++ b/source/libs/parser/test/parserTests.cpp
@@ -406,8 +406,10 @@ TEST(testCase, function_Test10) {
   sqlCheck("select cov(a, b) from `t.1abc`", true);
   sqlCheck("select sum(length(a) + count(b)) from `t.1abc`", false);
 
-    sqlCheck("select concat(concat(a,b), concat(a,b)) from `t.1abc`", true);
-    sqlCheck("select length(length(length(a))) from `t.1abc`", true);
+  sqlCheck("select concat(concat(a,b), concat(a,b)) from `t.1abc`", true);
+  sqlCheck("select length(length(length(a))) from `t.1abc`", true);
+  sqlCheck("select count() from `t.1abc`", false);
+  sqlCheck("select block_dist() from `t.1abc`", true);
 }
 
 TEST(testCase, function_Test6) {
diff --git a/source/libs/parser/test/plannerTest.cpp b/source/libs/parser/test/plannerTest.cpp
index 7eb45e92d2..5d3a6a42a6 100644
--- a/source/libs/parser/test/plannerTest.cpp
+++ b/source/libs/parser/test/plannerTest.cpp
@@ -64,6 +64,44 @@ void setTableMetaInfo(SQueryStmtInfo* pQueryInfo, SMetaReq *req) {
   setSchema(&pSchema[2], TSDB_DATA_TYPE_DOUBLE, 8, "b", 2);
   setSchema(&pSchema[3], TSDB_DATA_TYPE_DOUBLE, 8, "col", 3);
 
+}
+
+void generateLogicplan(const char* sql) {
+  SSqlInfo info1 = doGenerateAST(sql);
+  ASSERT_EQ(info1.valid, true);
+
+  char    msg[128] = {0};
+  SMsgBuf buf;
+  buf.len = 128;
+  buf.buf = msg;
+
+  SSqlNode* pNode = (SSqlNode*) taosArrayGetP(((SArray*)info1.list), 0);
+  int32_t code = evaluateSqlNode(pNode, TSDB_TIME_PRECISION_NANO, &buf);
+  ASSERT_EQ(code, 0);
+
+  SMetaReq req = {0};
+  int32_t  ret = qParserExtractRequestedMetaInfo(&info1, &req, msg, 128);
+  ASSERT_EQ(ret, 0);
+  ASSERT_EQ(taosArrayGetSize(req.pTableName), 1);
+
+  SQueryStmtInfo* pQueryInfo = createQueryInfo();
+  setTableMetaInfo(pQueryInfo, &req);
+
+  SSqlNode* pSqlNode = (SSqlNode*)taosArrayGetP(info1.list, 0);
+  ret = validateSqlNode(pSqlNode, pQueryInfo, &buf);
+  ASSERT_EQ(ret, 0);
+
+  struct SQueryPlanNode* n = nullptr;
+  code = qCreateQueryPlan(pQueryInfo, &n);
+
+  char* str = NULL;
+  qQueryPlanToString(n, &str);
+  printf("%s\n", str);
+
+  destroyQueryInfo(pQueryInfo);
+  qParserClearupMetaRequestInfo(&req);
+  destroySqlInfo(&info1);
+
 }
 }
 
@@ -123,4 +161,11 @@ TEST(testCase, planner_test) {
   destroyQueryInfo(pQueryInfo);
   qParserClearupMetaRequestInfo(&req);
   destroySqlInfo(&info1);
+}
+
+TEST(testCase, displayPlan) {
+  generateLogicplan("select count(*) from `t.1abc`");
+  generateLogicplan("select count(*) from `t.1abc` group by a");
+  generateLogicplan("select count(*) from `t.1abc` interval(10s, 5s) sliding(7s)");
+  generateLogicplan("select count(*),sum(a),avg(b),min(a+b) from `t.1abc`");
 }
\ No newline at end of file