fix(query): fix error in displaying block distribution.

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -4680,7 +4680,7 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
 }
 
 static int32_t getBucketIndex(int32_t startRow, int32_t bucketRange, int32_t numOfRows) {
-  return (numOfRows - startRow) / bucketRange;
+  return ((numOfRows - startRow) / bucketRange) - 1;
 }
 
 int32_t tsdbGetFileBlocksDistInfo(STsdbReader* pReader, STableBlockDistInfo* pTableBlockInfo) {

source/libs/function/src/builtinsimpl.c

@@ -5582,7 +5582,7 @@ int32_t blockDistFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   int32_t bucketRange = (pData->defMaxRows - pData->defMinRows) / numOfBuckets;
 
   for (int32_t i = 0; i < tListLen(pData->blockRowsHisto); ++i) {
-    len = sprintf(st + VARSTR_HEADER_SIZE, "%04d |", pData->defMinRows + bucketRange * i);
+    len = sprintf(st + VARSTR_HEADER_SIZE, "%04d |", pData->defMinRows + bucketRange * (i + 1));
 
     int32_t num = 0;
     if (pData->blockRowsHisto[i] > 0) {