Merge pull request #8748 from taosdata/fix/TD-10815

[TD-10815]<fix>: MODIFY COLUMN:'invalid operation: invalid column name', -2147483136

src/client/src/tscSQLParser.c

@@ -6456,11 +6456,12 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
     SColumnIndex columnIndex = COLUMN_INDEX_INITIALIZER;
     SStrToken    name = {.type = TK_STRING, .z = pItem->name, .n = (uint32_t)strlen(pItem->name)};
+
     //handle Escape character backstick
+    bool inEscape = false;
     if (name.z[0] == TS_ESCAPE_CHAR && name.z[name.n - 1] == TS_ESCAPE_CHAR) {
-      memmove(name.z, name.z + 1, name.n);
-      name.z[name.n - TS_ESCAPE_CHAR_SIZE] = '\0';
-      name.n -= TS_ESCAPE_CHAR_SIZE;
+      inEscape = true;
+      name.type = TK_ID;
     }
 
     if (getColumnIndexByName(&name, pQueryInfo, &columnIndex, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
@@ -6496,6 +6497,13 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     if (nLen >= TSDB_MAX_BYTES_PER_ROW) {
       return invalidOperationMsg(pMsg, msg24);
     }
+
+    if (inEscape) {
+      memmove(name.z, name.z + 1, name.n);
+      name.z[name.n - TS_ESCAPE_CHAR_SIZE] = '\0';
+      name.n -= TS_ESCAPE_CHAR_SIZE;
+    }
+
     TAOS_FIELD f = tscCreateField(pColSchema->type, name.z, pItem->bytes);
     tscFieldInfoAppend(&pQueryInfo->fieldsInfo, &f);
   }else if (pAlterSQL->type == TSDB_ALTER_TABLE_MODIFY_TAG_COLUMN) {