TD-6129<feature> add tag-> where logic

src/client/inc/tscUtil.h

@@ -378,10 +378,10 @@ char* cloneCurrentDBName(SSqlObj* pSql);
 
 int parseJsontoTagData(char* json, SKVRowBuilder* kvRowBuilder, char* errMsg, int16_t startColId);
 char* parseTagDatatoJson(void *p);
-void findTagValue(void* data, char* key, int32_t keyLen, char* out, int16_t len);
+void findTagValue(STable* data, char* key, int32_t keyLen, char* out, int16_t len);
 
 int8_t  jsonType2DbType(double data, int jsonType);
-void*      getJsonTagValue(STable* pTable, char* key);
+void*      getJsonTagValue(STable* pTable, char* key, int32_t keyLen);
 
 #ifdef __cplusplus
 }

src/client/src/tscUtil.c

@@ -725,23 +725,19 @@ static void setResRawPtrImpl(SSqlRes* pRes, SInternalField* pInfo, int32_t i, bo
     char* p = pRes->urow[i];
     for (int32_t k = 0; k < pRes->numOfRows; ++k) {
       char* dst = pRes->buffer[i] + k * pInfo->field.bytes;
-
-      if (isNull(p, TSDB_DATA_TYPE_NCHAR)) {
-        memcpy(dst, p, varDataTLen(p));
-      } else {
+      char* realData = p + CHAR_BYTES;
       if (*p == SELECT_ALL_JSON_TAG){
-          char* json = parseTagDatatoJson(p+1);
+        char* json = parseTagDatatoJson(realData);
         if(json) {
           memcpy(varDataVal(dst), json, strlen(json));
           varDataSetLen(dst, strlen(json));
           tfree(json);
         }
       }else if (*p == SELECT_ELEMENT_JSON_TAG){
-          memcpy(dst, p+1, varDataTLen(p+1));
+        memcpy(dst, realData, varDataTLen(realData));
       }else{
         tscError("construct json error");
       }
-      }
       p += pInfo->field.bytes;
     }
 
@@ -5178,62 +5174,42 @@ char* cloneCurrentDBName(SSqlObj* pSql) {
   return p;
 }
 
-void findTagValue(void* data, char* key, int32_t keyLen, char* out, int16_t len){
-  int16_t nCols = kvRowNCols(data);
-
-  bool found = false;
-  for (int k = 1; k < nCols; ++k) {
-    SColIdx* pColIdx = kvRowColIdxAt(data, k);
-    void*    result = kvRowColVal(data, pColIdx);
-
-    if (k % 2 != 0) {  // json key
-      if (JSON_TYPE_BINARY){
-        if (keyLen != varDataLen(result)) continue;
-        if (memcmp(varDataVal(result), key, keyLen) != 0) continue;
-      } else if(JSON_TYPE_NCHAR){
-        char    tagJsonKey[TSDB_MAX_TAGS_LEN] = {0};
-        int32_t length = taosUcs4ToMbs(varDataVal(result), varDataLen(result), tagJsonKey);
-        if (length == 0) {
-          tscError("charset:%s to %s. val:%s convert json key failed.", DEFAULT_UNICODE_ENCODEC, tsCharset,
-                   (char*)result);
-          continue;
-        }
-        if (keyLen != length) continue;
-        if (strncmp(key, tagJsonKey, keyLen) != 0) continue;
+void findTagValue(STable* data, char* key, int32_t keyLen, char* out, int16_t len){
+  void* result = getJsonTagValue(data, key, keyLen);
+  if (result == NULL){    // json key no result
+    return;
   }
-      found = true;
-    } else {  // json value
-      if (!found) continue;
   char* realData = POINTER_SHIFT(result, CHAR_BYTES);
-      if (*(char*)result == cJSON_String) {
 
-        if (JSON_TYPE_BINARY){
+  if (*(char*)result == TSDB_DATA_TYPE_BINARY){
     assert(varDataLen(realData) <= len);
     memcpy(varDataVal(out), varDataVal(realData), varDataLen(realData));
     varDataSetLen(out, varDataLen(realData));
-        } else if(JSON_TYPE_NCHAR) {
+  } else if(*(char*)result == TSDB_DATA_TYPE_NCHAR) {
     char    tagJsonValue[TSDB_MAX_TAGS_LEN] = {0};
     int32_t length = taosUcs4ToMbs(varDataVal(realData),
                                    varDataLen(realData), tagJsonValue);
     if (length == 0) {
       tscError("charset:%s to %s. val:%s convert json value failed.", DEFAULT_UNICODE_ENCODEC, tsCharset,
                (char*)result);
-          } else {
+      return;
+    }
     assert(length <= len);
     varDataSetLen(out, length);
     memcpy(varDataVal(out), tagJsonValue, length);
-          }
-        }
-      } else if (*(char*)result == cJSON_Number) {
+  }else if (*(char*)result == TSDB_DATA_TYPE_DOUBLE) {
     double jsonVd = *(double*)(realData);
     sprintf(varDataVal(out), "%.9lf", jsonVd);
     assert(strlen(varDataVal(out)) <= len);
     varDataSetLen(out, strlen(varDataVal(out)));
-      } else {
-        tscError("unsupportted json value");
-      }
-      break;
+  }else if (*(char*)result == TSDB_DATA_TYPE_BIGINT) {
+    int64_t jsonVd = *(int64_t*)(realData);
+    sprintf(varDataVal(out), "%" PRId64, jsonVd);
+    assert(strlen(varDataVal(out)) <= len);
+    varDataSetLen(out, strlen(varDataVal(out)));
   }
+  else {
+    tscError("unsupportted json value");
   }
 }
 
@@ -5407,17 +5383,17 @@ int8_t jsonType2DbType(double data, int jsonType){
   return TSDB_DATA_TYPE_NULL;
 }
 
-void* getJsonTagValue(STable* pTable, char* key){
+void* getJsonTagValue(STable* pTable, char* key, int32_t keyLen){
   int32_t outLen = 0;
   if(JSON_TYPE_NCHAR){
     char tagKey[256] = {0};
-    if (!taosMbsToUcs4(key, strlen(key), tagKey, 256, &outLen)) {
+    if (!taosMbsToUcs4(key, keyLen, tagKey, 256, &outLen)) {
       tscError("json key to ucs4 error:%s|%s", strerror(errno), key);
       return NULL;
     }
     key = tagKey;
   }else{
-    outLen = strlen(key);
+    outLen = keyLen;
   }
   if(TABLE_TYPE(pTable) == TSDB_CHILD_TABLE){
     STable* superTable= pTable->pSuper;

src/query/src/qExecutor.c

@@ -7186,23 +7186,24 @@ static SSDataBlock* doTagScan(void* param, bool* newgroup) {
         if (pExprInfo[j].base.colInfo.colId == TSDB_TBNAME_COLUMN_INDEX) {
           data = tsdbGetTableName(item->pTable);
         } else {
-          data = tsdbGetTableTagVal(item->pTable, pExprInfo[j].base.colInfo.colId, type, bytes);
           if(type == TSDB_DATA_TYPE_JSON){
             if(pExprInfo[j].base.numOfParams > 0){ // tag-> operation
               tagJsonElementData = calloc(bytes, 1);
-              findTagValue(data, pExprInfo[j].base.param[0].pz, pExprInfo[j].base.param[0].nLen, tagJsonElementData, bytes);
+              findTagValue(item->pTable, pExprInfo[j].base.param[0].pz, pExprInfo[j].base.param[0].nLen, tagJsonElementData, bytes);
               *dst = SELECT_ELEMENT_JSON_TAG;   // select tag->element
               dst++;
               assert(varDataTLen(tagJsonElementData) < bytes);
-              doSetTagValueToResultBuf(dst, tagJsonElementData, type, bytes - 1);
+              doSetTagValueToResultBuf(dst, tagJsonElementData, type, bytes - CHAR_BYTES);
               tfree(tagJsonElementData);
             }else{
               *dst = SELECT_ALL_JSON_TAG;   // select tag
               dst++;
               assert(kvRowLen(data) < bytes);
-              doSetTagValueToResultBuf(dst, data, type, bytes - 1);
+              doSetTagValueToResultBuf(dst, data, type, bytes - CHAR_BYTES);
             }
             continue;
+          }else{
+            data = tsdbGetTableTagVal(item->pTable, pExprInfo[j].base.colInfo.colId, type, bytes);
           }
         }
         doSetTagValueToResultBuf(dst, data, type, bytes);

src/query/src/qFilter.c

@@ -3180,7 +3180,7 @@ int filterJsonTypeConvert(SFilterInfo* info) {
     SSchema* schema = info->fields[FLD_TYPE_COLUMN].fields[i].desc;
     if(schema->type == TSDB_DATA_TYPE_JSON){
 
-      void* data = getJsonTagValue(info->pTable, schema->name);
+      void* data = getJsonTagValue(info->pTable, schema->name, strlen(schema->name));
       if(data == NULL) return TSDB_CODE_QRY_JSON_KEY_NOT_EXIST;
       int8_t type = *(char*)data;
       assert(type > TSDB_DATA_TYPE_NULL && type < TSDB_DATA_TYPE_JSON);

src/tsdb/src/tsdbRead.c

@@ -4075,7 +4075,7 @@ static FORCE_INLINE int32_t tsdbGetJsonTagDataFromId(void *param, int32_t id, ch
   if (id == TSDB_TBNAME_COLUMN_INDEX) {
     *data = TABLE_NAME(pTable);
   } else {
-    void* jsonData = getJsonTagValue(pTable, name);
+    void* jsonData = getJsonTagValue(pTable, name, strlen(name));
     if (jsonData != NULL) jsonData += CHAR_BYTES;   // jump type
     *data = jsonData;
   }

tests/pytest/stable/json_tag.py

@@ -45,6 +45,11 @@ class TDTestCase:
         tdSql.query("select jtag from db_json_tag_test.jsons1_1")
         tdSql.checkRows(1)
 
+        tdSql.error("select * from db_json_tag_test.jsons1 where jtag->'location'=4")
+
+        tdSql.error("select * from db_json_tag_test.jsons1 where jtag->'location'='beijing'")
+        tdSql.checkRows(1)
+
         print("==============step3")
         tdLog.info("alter stable add tag")
         tdSql.error("ALTER STABLE db_json_tag_test.jsons1 add tag tag2 nchar(20)")