From 1f1657a160406f35b701be703e5f2e8d6cc7c299 Mon Sep 17 00:00:00 2001
From: slzhou <shenglian_zhou@163.com>
Date: Wed, 20 Sep 2023 11:50:32 +0800
Subject: [PATCH] fix: fix address sanitizer error

---
 source/libs/parser/inc/sql.y           | 4 ++--
 source/libs/parser/src/parAstCreater.c | 3 +++
 source/libs/parser/src/sql.c           | 4 ++--
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/source/libs/parser/inc/sql.y b/source/libs/parser/inc/sql.y
index 667b21893e..7020a65552 100755
--- a/source/libs/parser/inc/sql.y
+++ b/source/libs/parser/inc/sql.y
@@ -509,8 +509,8 @@ cmd ::= SHOW CLUSTER ALIVE.
 
 %type table_kind_db_name_cond_opt                                                 { SShowTablesOption }
 %destructor table_kind_db_name_cond_opt                                           { }
-table_kind_db_name_cond_opt(A) ::= .                                              { A.kind = SHOW_KIND_ALL; A.pDbName = createDefaultDatabaseCondValue(pCxt); }
-table_kind_db_name_cond_opt(A) ::= table_kind(B).                                 { A.kind = B; A.pDbName = createDefaultDatabaseCondValue(pCxt); }
+table_kind_db_name_cond_opt(A) ::= .                                              { A.kind = SHOW_KIND_ALL; A.pDbName = NULL; }
+table_kind_db_name_cond_opt(A) ::= table_kind(B).                                 { A.kind = B; A.pDbName = NULL; }
 table_kind_db_name_cond_opt(A) ::= db_name_cond(C).                               { A.kind = SHOW_KIND_ALL; A.pDbName = C; }
 table_kind_db_name_cond_opt(A) ::= table_kind(B) db_name_cond(C).                 { A.kind = B; A.pDbName = C; }
 
diff --git a/source/libs/parser/src/parAstCreater.c b/source/libs/parser/src/parAstCreater.c
index e0b135b4f9..1f29a594c6 100644
--- a/source/libs/parser/src/parAstCreater.c
+++ b/source/libs/parser/src/parAstCreater.c
@@ -1564,6 +1564,9 @@ SNode* setShowKind(SAstCreateContext* pCxt, SNode* pStmt, EShowKind showKind) {
 SNode* createShowStmtWithCond(SAstCreateContext* pCxt, ENodeType type, SNode* pDbName, SNode* pTbName,
                               EOperatorType tableCondType) {
   CHECK_PARSER_STATUS(pCxt);
+  if (NULL == pDbName) {
+    pDbName = createDefaultDatabaseCondValue(pCxt);
+  }
   if (needDbShowStmt(type) && NULL == pDbName) {
     snprintf(pCxt->pQueryCxt->pMsg, pCxt->pQueryCxt->msgLen, "database not specified");
     pCxt->errCode = TSDB_CODE_PAR_SYNTAX_ERROR;
diff --git a/source/libs/parser/src/sql.c b/source/libs/parser/src/sql.c
index ff1d834791..752d5a37e1 100644
--- a/source/libs/parser/src/sql.c
+++ b/source/libs/parser/src/sql.c
@@ -6389,12 +6389,12 @@ static YYACTIONTYPE yy_reduce(
         break;
       case 281: /* table_kind_db_name_cond_opt ::= */
 #line 512 "sql.y"
-{ yymsp[1].minor.yy343.kind = SHOW_KIND_ALL; yymsp[1].minor.yy343.pDbName = createDefaultDatabaseCondValue(pCxt); }
+{ yymsp[1].minor.yy343.kind = SHOW_KIND_ALL; yymsp[1].minor.yy343.pDbName = NULL; }
 #line 6393 "sql.c"
         break;
       case 282: /* table_kind_db_name_cond_opt ::= table_kind */
 #line 513 "sql.y"
-{ yylhsminor.yy343.kind = yymsp[0].minor.yy579; yylhsminor.yy343.pDbName = createDefaultDatabaseCondValue(pCxt); }
+{ yylhsminor.yy343.kind = yymsp[0].minor.yy579; yylhsminor.yy343.pDbName = NULL; }
 #line 6398 "sql.c"
   yymsp[0].minor.yy343 = yylhsminor.yy343;
         break;