[TD-10700]<enhance>: The escape char backstick can be used for both tag name and column name

src/client/src/tscSQLParser.c

@@ -6607,7 +6607,7 @@ int32_t validateColumnName(char* name) {
 
     return validateColumnName(token.z);
   } else if (token.type == TK_ID) {
-    tscRmEscapeAndTrimToken(&token);
+    strRmquoteEscape(name, token.n);
     return TSDB_CODE_SUCCESS;
   } else {
     if (isNumber(&token)) {
@@ -7664,7 +7664,7 @@ int32_t doCheckForCreateFromStable(SSqlObj* pSql, SSqlInfo* pInfo) {
     SCreatedTableInfo* pCreateTableInfo = taosArrayGet(pCreateTable->childTableInfo, j);
 
     SStrToken* pToken = &pCreateTableInfo->stableName;
-    
+
     bool dbIncluded = false;
     char      buf[TSDB_TABLE_FNAME_LEN];
     SStrToken sTblToken;
@@ -7728,6 +7728,10 @@ int32_t doCheckForCreateFromStable(SSqlObj* pSql, SSqlInfo* pInfo) {
           tscDequoteAndTrimToken(sToken);
         }
 
+        if (TK_ID == sToken->type) {
+          tscRmEscapeAndTrimToken(sToken);
+        }
+
         tVariantListItem* pItem = taosArrayGet(pValList, i);
 
         findColumnIndex = false;

src/util/src/tutil.c

@@ -53,13 +53,13 @@ int32_t strdequote(char *z) {
 }
 
 
-int32_t strRmquote(char *z, int32_t len){  
+int32_t strRmquote(char *z, int32_t len){
     // delete escape character: \\, \', \"
     char delim = z[0];
     if (delim != '\'' && delim != '\"') {
       return len;
     }
-  
+
     int32_t cnt = 0;
     int32_t j = 0;
     for (uint32_t k = 1; k < len - 1; ++k) {
@@ -74,23 +74,24 @@ int32_t strRmquote(char *z, int32_t len){
           continue;
         }
       }
-  
+
       z[j] = z[k];
       j++;
     }
-  
+
     z[j] = 0;
-    
+
     return len - 2 - cnt;
 }
 
 int32_t strRmquoteEscape(char *z, int32_t len) {
   if (len <= 0) return len;
-  
+
   if (z[0] == '\'' || z[0] == '\"') {
     return strRmquote(z, len);
   } else if (len > 1 && z[0] == TS_ESCAPE_CHAR && z[len - 1] == TS_ESCAPE_CHAR) {
     memmove(z, z + 1, len - 2);
+    z[len - 2] = '\0';
     return len - 2;
   }