support having

src/client/inc/tsclient.h

@@ -129,13 +129,18 @@ typedef struct SColumn {
   SColumnFilterInfo *filterInfo;
 } SColumn;
 
+typedef struct SExprFilter {
+  tSQLExpr       *pExpr;     //used for having parse
+  SArray         *fp;
+  SColumn        *pFilters;  //having filter info
+}SExprFilter;
+
 typedef struct SInternalField {
   TAOS_FIELD      field;
   bool            visible;
   SExprInfo      *pArithExprInfo;
   SSqlExpr       *pSqlExpr;
-  tSQLExpr       *pExpr;          //used for having parse 
-  SColumn        *pFieldFilters;  //having filter info
+  SExprFilter    *pFieldFilters;
 } SInternalField;
 
 typedef struct SCond {

src/client/src/tscLocalMerge.c

@@ -22,6 +22,7 @@
 #include "tscUtil.h"
 #include "tschemautil.h"
 #include "tsclient.h"
+#include "qutil.h"
 
 typedef struct SCompareParam {
   SLocalDataSource **pLocalData;
@@ -1229,18 +1230,71 @@ static bool saveGroupResultInfo(SSqlObj *pSql) {
   return false;
 }
 
-int32_t doHavingFilter(SQueryInfo* pQueryInfo) {
+
+bool doFilterFieldData(SQueryInfo* pQueryInfo, char *input, tFilePage* pOutput, SExprFilter* pFieldFilters, int16_t type, bool* notSkipped) {
+  bool qualified = false;
+  
+  for(int32_t k = 0; k < pFieldFilters->pFilters->numOfFilters; ++k) {
+    __filter_func_t fp = taosArrayGetP(pFieldFilters->fp, k);
+    SColumnFilterElem filterElem = {.filterInfo = pFieldFilters->pFilters->filterInfo[k]};
+    
+    bool isnull = isNull(input, type);
+    if (isnull) {
+      if (fp == isNullOperator) {
+        qualified = true;
+        break;
+      } else {
+        continue;
+      }
+    } else {
+      if (fp == notNullOperator) {
+        qualified = true;
+        break;
+      } else if (fp == isNullOperator) {
+        continue;
+      }
+    }
+
+    if (fp(&filterElem, input, input, type)) {
+      qualified = true;
+      break;
+    }
+  }
+
+  *notSkipped = qualified;
+  
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t doHavingFilter(SQueryInfo* pQueryInfo, tFilePage* pOutput, bool* notSkipped) {
+  *notSkipped = true;
+  
   if (pQueryInfo->havingFieldNum <= 0) {
     return TSDB_CODE_SUCCESS;
   }
 
+  //int32_t exprNum  = (int32_t) tscSqlExprNumOfExprs(pQueryInfo);
+
   size_t numOfOutput = tscNumOfFields(pQueryInfo);
   for(int32_t i = 0; i < numOfOutput; ++i) {
-    SColumn* pFieldFilters = tscFieldInfoGetInternalField(&pQueryInfo->fieldsInfo, i)->pFieldFilters;
-    if (pFieldFilters != NULL) {
+    SInternalField* pInterField = tscFieldInfoGetInternalField(&pQueryInfo->fieldsInfo, i);
+    SExprFilter* pFieldFilters = pInterField->pFieldFilters;
+
+    if (pFieldFilters == NULL) {
       continue;
     }
-  }
+
+    int32_t type = pInterField->field.type;
+
+    SSqlExpr* pExpr = tscSqlExprGet(pQueryInfo, i);
+    char* pInput = pOutput->data + pOutput->num* pExpr->offset;
+    
+    doFilterFieldData(pQueryInfo, pInput, pOutput, pFieldFilters, type, notSkipped);
+    if (!notSkipped) {
+      return TSDB_CODE_SUCCESS;
+    }
+  } 
 
   return TSDB_CODE_SUCCESS;
 }
@@ -1287,7 +1341,21 @@ bool genFinalResults(SSqlObj *pSql, SLocalMerger *pLocalMerge, bool noMoreCurren
     doArithmeticCalculate(pQueryInfo, pResBuf, pModel->rowSize, pLocalMerge->finalModel->rowSize);
   }
 
-  doHavingFilter(pQueryInfo);
+  bool notSkipped = true;
+  
+  doHavingFilter(pQueryInfo, pResBuf, &notSkipped);
+
+  if (!notSkipped) {
+    pRes->numOfRows = 0;
+    pLocalMerge->discard = !noMoreCurrentGroupRes;
+
+    if (pLocalMerge->discard) {
+      SColumnModel *pInternModel = pLocalMerge->pDesc->pColumnModel;
+      tColModelAppend(pInternModel, pLocalMerge->discardData, pLocalMerge->pTempBuffer->data, 0, 1, 1);
+    }    
+    
+    return notSkipped;
+  }
 
   // no interval query, no fill operation
   if (pQueryInfo->interval.interval == 0 || pQueryInfo->fillType == TSDB_FILL_NONE) {

src/client/src/tscSQLParser.c

@@ -34,6 +34,7 @@
 #include "tstoken.h"
 #include "tstrbuild.h"
 #include "ttokendef.h"
+#include "qutil.h"
 
 #define DEFAULT_PRIMARY_TIMESTAMP_COL_NAME "_c0"
 
@@ -6709,17 +6710,26 @@ static int32_t checkQueryRangeForFill(SSqlCmd* pCmd, SQueryInfo* pQueryInfo) {
   int32_t slot = tscNumOfFields(pQueryInfo) - 1;
   SInternalField* pInfo = tscFieldInfoGetInternalField(&pQueryInfo->fieldsInfo, slot);
   pInfo->visible = false;
-  pInfo->pExpr = pExpr;
   
   if (pInfo->pFieldFilters == NULL) {
-    SColumn* pFieldFilters = calloc(1, sizeof(SColumn));
+    SExprFilter* pFieldFilters = calloc(1, sizeof(SExprFilter));
     if (pFieldFilters == NULL) {
       return TSDB_CODE_TSC_OUT_OF_MEMORY;
     }
-    
+
+    SColumn* pFilters = calloc(1, sizeof(SColumn));
+    if (pFilters == NULL) {
+      tfree(pFieldFilters);
+      
+      return TSDB_CODE_TSC_OUT_OF_MEMORY;
+    }
+
+    pFieldFilters->pFilters = pFilters;
     pInfo->pFieldFilters = pFieldFilters;
   }
 
+  pInfo->pFieldFilters->pExpr = pExpr;
+
   *interField = pInfo;
 
   return TSDB_CODE_SUCCESS;
@@ -6731,7 +6741,7 @@ int32_t tscGetExprFilters(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSQLExpr* pExpr
   for (int32_t i = pQueryInfo->havingFieldNum - 1; i >= 0; --i) {
     pInfo = tscFieldInfoGetInternalField(&pQueryInfo->fieldsInfo, i);
 
-    if (0 == tSqlExprCompare(pInfo->pExpr, pExpr)) {
+    if (pInfo->pFieldFilters && 0 == tSqlExprCompare(pInfo->pFieldFilters->pExpr, pExpr)) {
       *pField = pInfo;
       return TSDB_CODE_SUCCESS;
     }
@@ -6747,7 +6757,33 @@ int32_t tscGetExprFilters(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSQLExpr* pExpr
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t genExprFilter(SExprFilter    * exprFilter) {
+  exprFilter->fp = taosArrayInit(4, sizeof(__filter_func_t));
+  if (exprFilter->fp == NULL) {
+    return TSDB_CODE_TSC_OUT_OF_MEMORY;
+  }
 
+  for (int32_t i = 0; i < exprFilter->pFilters->numOfFilters; ++i) {
+    SColumnFilterInfo *filterInfo = &exprFilter->pFilters->filterInfo[i];
+
+    int32_t lower = filterInfo->lowerRelOptr;
+    int32_t upper = filterInfo->upperRelOptr;
+    if (lower == TSDB_RELATION_INVALID && upper == TSDB_RELATION_INVALID) {
+      tscError("invalid rel optr");
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    __filter_func_t ffp = getFilterOperator(lower, upper);
+    if (ffp == NULL) {
+      tscError("invalid filter info");
+      return TSDB_CODE_TSC_APP_ERROR;
+    }
+
+    taosArrayPush(exprFilter->fp, &ffp);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
 
 static int32_t handleExprInHavingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSQLExpr* pExpr, int32_t sqlOptr) {
   const char* msg1 = "non binary column not support like operator";
@@ -6768,7 +6804,7 @@ static int32_t handleExprInHavingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
       return ret;
     }
 
-    pColumn = pInfo->pFieldFilters;
+    pColumn = pInfo->pFieldFilters->pFilters;
     
     // this is a new filter condition on this column
     if (pColumn->numOfFilters == 0) {
@@ -6819,7 +6855,12 @@ static int32_t handleExprInHavingClause(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
     }
   }
 
-  return doExtractColumnFilterInfo(pCmd, pQueryInfo, pColFilter, pInfo->field.type, pExpr);
+  int32_t ret = doExtractColumnFilterInfo(pCmd, pQueryInfo, pColFilter, pInfo->field.type, pExpr);
+  if (ret) {
+    return ret; 
+  }
+  
+  return genExprFilter(pInfo->pFieldFilters);
 }
 
 int32_t getHavingExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSQLExpr* pExpr, int32_t parentOptr) {

src/client/src/tscUtil.c

@@ -1081,7 +1081,8 @@ void tscFieldInfoClear(SFieldInfo* pFieldInfo) {
     }
 
     if (pInfo->pFieldFilters != NULL) {
-      tscColumnDestroy(pInfo->pFieldFilters);
+      tscColumnDestroy(pInfo->pFieldFilters->pFilters);
+      tfree(pInfo->pFieldFilters);
     }
   }
   

src/query/src/qExecutor.c

@@ -213,9 +213,6 @@ bool doFilterData(SQuery *pQuery, int32_t elemPos) {
   return true;
 }
 
-bool doFilterDataOnce() {
-
-}
 
 int64_t getNumOfResult(SQueryRuntimeEnv *pRuntimeEnv) {
   SQuery *pQuery = pRuntimeEnv->pQuery;

src/query/src/qParserImpl.c

@@ -296,6 +296,10 @@ static FORCE_INLINE int32_t tStrTokenCompare(SStrToken* left, SStrToken* right)
 
 
 int32_t tSqlExprCompare(tSQLExpr *left, tSQLExpr *right) {
+  if ((left == NULL && right) || (left && right == NULL)) {
+    return 1;
+  }
+  
   if (left->nSQLOptr != right->nSQLOptr) {
     return 1;
   }