enh: optimize last pruning logic

f86c8d0d · Xiaoyu Wang · 6277b256 · f86c8d0d
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source/dnode/vnode/src/tsdb/tsdbCacheRead.c source/dnode/vnode/src/tsdb/tsdbCacheRead.c +1 -1

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--- a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
@@ -408,7 +408,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
        }

        if (hasNotNullRow) {
-          if (INT64_MAX == totalLastTs || totalLastTs < singleTableLastTs) {
+          if (INT64_MAX == totalLastTs || (INT64_MAX != singleTableLastTs && totalLastTs < singleTableLastTs)) {
            totalLastTs = singleTableLastTs;
          }
          double cost = (taosGetTimestampUs() - st) / 1000.0;