refactor(query): do some internal refactor.

source/libs/executor/src/scanoperator.c

@@ -602,48 +602,45 @@ SOperatorInfo* createTableSeqScanOperatorInfo(void* pReadHandle, SExecTaskInfo*
   return pOperator;
 }
 
-static SSDataBlock* doBlockInfoScan(SOperatorInfo* pOperator) {
-  if (pOperator->status == OP_EXEC_DONE) {
-    return NULL;
-  }
-
-  SBlockDistInfo* pBlockScanInfo = pOperator->info;
-
-  STableBlockDistInfo blockDistInfo = {0};
-  blockDistInfo.maxRows = INT_MIN;
-  blockDistInfo.minRows = INT_MAX;
+static int32_t doGetTableRowSize(void* pMeta, uint64_t uid) {
+  int32_t rowLen = 0;
 
   SMetaReader mr = {0};
-  metaReaderInit(&mr, pBlockScanInfo->readHandle.meta, 0);
-  metaGetTableEntryByUid(&mr, pBlockScanInfo->uid);
+  metaReaderInit(&mr, pMeta, 0);
+  metaGetTableEntryByUid(&mr, uid);
   if (mr.me.type == TSDB_SUPER_TABLE) {
     int32_t numOfCols = mr.me.stbEntry.schemaRow.nCols;
-    int32_t rowLen = 0;
     for(int32_t i = 0; i < numOfCols; ++i) {
       rowLen += mr.me.stbEntry.schemaRow.pSchema[i].bytes;
     }
-    blockDistInfo.rowSize = rowLen;
   } else if (mr.me.type == TSDB_CHILD_TABLE) {
     uint64_t suid = mr.me.ctbEntry.suid;
     metaGetTableEntryByUid(&mr, suid);
     int32_t numOfCols = mr.me.stbEntry.schemaRow.nCols;
 
-    int32_t rowLen = 0;
     for(int32_t i = 0; i < numOfCols; ++i) {
       rowLen += mr.me.stbEntry.schemaRow.pSchema[i].bytes;
     }
-    blockDistInfo.rowSize = rowLen;
-
   } else if (mr.me.type == TSDB_NORMAL_TABLE) {
     int32_t numOfCols = mr.me.ntbEntry.schemaRow.nCols;
-    int32_t rowLen = 0;
     for(int32_t i = 0; i < numOfCols; ++i) {
       rowLen += mr.me.ntbEntry.schemaRow.pSchema[i].bytes;
     }
-    blockDistInfo.rowSize = rowLen;
   }
 
   metaReaderClear(&mr);
+  return rowLen;
+}
+
+static SSDataBlock* doBlockInfoScan(SOperatorInfo* pOperator) {
+  if (pOperator->status == OP_EXEC_DONE) {
+    return NULL;
+  }
+
+  SBlockDistInfo* pBlockScanInfo = pOperator->info;
+
+  STableBlockDistInfo blockDistInfo = {.minRows = INT_MAX, .maxRows = INT_MIN};
+  blockDistInfo.rowSize = doGetTableRowSize(pBlockScanInfo->readHandle.meta, pBlockScanInfo->uid);
 
   tsdbGetFileBlocksDistInfo(pBlockScanInfo->pHandle, &blockDistInfo);
   blockDistInfo.numOfInmemRows = (int32_t)tsdbGetNumOfRowsInMemTable(pBlockScanInfo->pHandle);