Merge pull request #15768 from taosdata/fix/TD-18167

fix: clear reader's coder memory

source/libs/executor/src/executor.c

@@ -83,7 +83,6 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
         taosArrayClear(p->pDataBlock);
         taosArrayAddAll(p->pDataBlock, pDataBlock->pDataBlock);
         taosArrayPush(pInfo->pBlockLists, &p);
-        
       }
       pInfo->blockType = STREAM_INPUT__DATA_BLOCK;
     } else {
@@ -217,6 +216,8 @@ static SArray* filterUnqualifiedTables(const SStreamScanInfo* pScanInfo, const S
       continue;
     }
 
+    tDecoderClear(&mr.coder);
+
     // TODO handle ntb case
     if (mr.me.type != TSDB_CHILD_TABLE || mr.me.ctbEntry.suid != pScanInfo->tableUid) {
       continue;