[td-225] fix bugs for last(*) query

src/common/src/ttypes.c

@@ -92,9 +92,9 @@ bool isNull(const char *val, int32_t type) {
     case TSDB_DATA_TYPE_DOUBLE:
       return *(uint64_t *)val == TSDB_DATA_DOUBLE_NULL;
     case TSDB_DATA_TYPE_NCHAR:
-      return *(uint32_t *)val == TSDB_DATA_NCHAR_NULL;
+      return *(uint32_t*) varDataVal(val) == TSDB_DATA_NCHAR_NULL;
     case TSDB_DATA_TYPE_BINARY:
-      return *(uint8_t *)val == TSDB_DATA_BINARY_NULL;
+      return *(uint8_t *) varDataVal(val) == TSDB_DATA_BINARY_NULL;
     default:
       return false;
   };

src/inc/taosdef.h

@@ -241,7 +241,7 @@ void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
 #define TSDB_MULTI_METERMETA_MAX_NUM    100000  // maximum batch size allowed to load metermeta
 
 #define TSDB_MIN_CACHE_BLOCK_SIZE       1
-#define TSDB_MAX_CACHE_BLOCK_SIZE       1000000
+#define TSDB_MAX_CACHE_BLOCK_SIZE       10240   // 10GB for each vnode
 #define TSDB_DEFAULT_CACHE_BLOCK_SIZE   16
 
 #define TSDB_MIN_TOTAL_BLOCKS           2

src/tsdb/src/tsdbRead.c

@@ -335,11 +335,7 @@ static int32_t getFileCompInfo(STsdbQueryHandle* pQueryHandle, int32_t* numOfBlo
         pCheckInfo->compSize = compIndex->len;
       }
       
-      // tsdbLoadCompBlocks(fileGroup, compIndex, pCheckInfo->pCompInfo);
-      STable* pTable = tsdbGetTableByUid(tsdbGetMeta(pQueryHandle->pTsdb), pCheckInfo->tableId.uid);
-      assert(pTable != NULL);
-      
-      tsdbSetHelperTable(&pQueryHandle->rhelper, pTable, pQueryHandle->pTsdb);
+      tsdbSetHelperTable(&pQueryHandle->rhelper, pCheckInfo->pTableObj, pQueryHandle->pTsdb);
 
       tsdbLoadCompInfo(&(pQueryHandle->rhelper), (void *)(pCheckInfo->pCompInfo));
       SCompInfo* pCompInfo = pCheckInfo->pCompInfo;
@@ -472,6 +468,7 @@ static bool loadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlock
       filterDataInDataBlock(pQueryHandle, pCheckInfo, pBlock, sa);
     } else {  // the whole block is loaded in to buffer
       pQueryHandle->realNumOfRows = pBlock->numOfPoints;
+      cur->pos = 0;
     }
   } else {
     // query ended in current block
@@ -491,6 +488,7 @@ static bool loadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlock
       filterDataInDataBlock(pQueryHandle, pCheckInfo, pBlock, sa);
     } else {
       pQueryHandle->realNumOfRows = pBlock->numOfPoints;
+      cur->pos = pBlock->numOfPoints - 1;
     }
   }
 
@@ -612,7 +610,6 @@ static void filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInf
   int32_t reqCols = taosArrayGetSize(pQueryHandle->pColumns);
   
   for (int32_t i = 0; i < reqCols; ++i) {
-//    int16_t colId = *(int16_t*)taosArrayGet(sa, i);
     SColumnInfoData* pCol = taosArrayGet(pQueryHandle->pColumns, i);
     int32_t bytes = pCol->info.bytes;
 

tests/script/general/parser/first_last.sim

@@ -21,7 +21,7 @@ $stb = $stbPrefix . $i
 
 sql drop database $db -x step1
 step1:
-sql create database $db rows 400 cache 4096 maxTables 4
+sql create database $db maxrows 400 cache 1 maxTables 4
 sql use $db
 sql create table $stb (ts timestamp, c1 int, c2 bigint, c3 float, c4 double, c5 smallint, c6 tinyint, c7 bool, c8 binary(10), c9 nchar(10)) tags(t1 int)
 

tests/script/general/parser/first_last_query.sim

@@ -56,8 +56,8 @@ endi
 if $data07 != 1 then
   return -1
 endi
-#if $data08 != null then
 if $data08 != BINARY then
+  print expect BINARY, actual: $data08
   return -1
 endi
 #if $data09 != null then

tests/script/general/parser/import_commit1.sim

@@ -23,7 +23,7 @@ $stb = $stbPrefix . $i
 
 sql drop database $db -x step1
 step1:
-sql create database $db cache 2048 
+sql create database $db cache 16
 print ====== create tables
 sql use $db
 

tests/script/general/parser/import_commit2.sim

@@ -22,7 +22,7 @@ $stb = $stbPrefix . $i
 
 sql drop database $db -x step1
 step1:
-sql create database $db cache 2048 
+sql create database $db cache 16
 print ====== create tables
 sql use $db
 

tests/script/general/parser/import_commit3.sim

@@ -22,7 +22,7 @@ $stb = $stbPrefix . $i
 
 sql drop database $db -x step1
 step1:
-sql create database $db cache 16384
+sql create database $db cache 16
 print ====== create tables
 sql use $db