[td-13039] fix bug in show tables;

source/dnode/mnode/impl/src/mndInfoSchema.c

@@ -86,8 +86,9 @@ static const SInfosTableSchema userStreamsSchema[] = {{.name = "stream_name",  .
                                                       {.name = "create_time", .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
                                                       {.name = "sql",          .bytes = 1024, .type = TSDB_DATA_TYPE_BINARY},
                                                      };
-static const SInfosTableSchema userTblsSchema[] = {{.name = "db_name",         .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+static const SInfosTableSchema userTblsSchema[] = {
                                                    {.name = "table_name",      .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "db_name",         .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
                                                    {.name = "create_time",    .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
                                                    {.name = "columns",         .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
                                                    {.name = "stable_name",     .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},

source/libs/executor/src/executorimpl.c

@@ -5482,7 +5482,7 @@ static SSDataBlock* doSysTableScan(void* param, bool* newgroup) {
 
     blockDataClearup(pInfo->pRes, true);
 
-    SColumnInfoData* pTableNameCol = taosArrayGet(pInfo->pRes->pDataBlock, 0);
+    SColumnInfoData* pTableNameCol = taosArrayGet(pInfo->pRes->pDataBlock, 1);
 
     char *  name = NULL;
     int32_t numOfRows = 0;
@@ -5495,6 +5495,22 @@ static SSDataBlock* doSysTableScan(void* param, bool* newgroup) {
       if (numOfRows >= pInfo->capacity) {
         break;
       }
+
+      for(int32_t i = 0; i < pInfo->pRes->info.numOfCols; ++i) {
+        if (i == 1) {
+          continue;
+        }
+
+        SColumnInfoData* pColInfoData = taosArrayGet(pInfo->pRes->pDataBlock, i);
+        int64_t tmp = 0;
+        char t[10] = {0};
+        STR_TO_VARSTR(t, "_");
+        if (IS_VAR_DATA_TYPE(pColInfoData->info.type)) {
+          colDataAppend(pColInfoData, numOfRows, t, false);
+        } else {
+          colDataAppend(pColInfoData, numOfRows, (char*) &tmp, false);
+        }
+      }
     }
 
     pInfo->loadInfo.totalRows += numOfRows;