Merge pull request #20925 from taosdata/fix/TS-3106-MAIN

add option enableScience on taos.cfg to show float and double scientific notation

include/common/tglobal.h

@@ -112,6 +112,7 @@ extern int32_t tsQueryNodeChunkSize;
 extern bool    tsQueryUseNodeAllocator;
 extern bool    tsKeepColumnName;
 extern bool    tsEnableQueryHb;
+extern bool    tsEnableScience;
 extern int32_t tsRedirectPeriod;
 extern int32_t tsRedirectFactor;
 extern int32_t tsRedirectMaxPeriod;

source/common/src/tglobal.c

@@ -105,6 +105,7 @@ int32_t tsQueryPolicy = 1;
 int32_t tsQueryRspPolicy = 0;
 int64_t tsQueryMaxConcurrentTables = 200;  // unit is TSDB_TABLE_NUM_UNIT
 bool    tsEnableQueryHb = false;
+bool    tsEnableScience = false; // on taos-cli show float and doulbe with scientific notation if true 
 int32_t tsQuerySmaOptimize = 0;
 int32_t tsQueryRsmaTolerance = 1000;  // the tolerance time (ms) to judge from which level to query rsma data.
 bool    tsQueryPlannerTrace = false;
@@ -117,6 +118,7 @@ int32_t tsRedirectMaxPeriod = 1000;
 int32_t tsMaxRetryWaitTime = 10000;
 bool    tsUseAdapter = false;
 
+
 /*
  * denote if the server needs to compress response message at the application layer to client, including query rsp,
  * metricmeta rsp, and multi-meter query rsp message body. The client compress the submit message to server.
@@ -328,6 +330,7 @@ static int32_t taosAddClientCfg(SConfig *pCfg) {
   if (cfgAddInt32(pCfg, "compressColData", tsCompressColData, -1, 100000000, 1) != 0) return -1;
   if (cfgAddInt32(pCfg, "queryPolicy", tsQueryPolicy, 1, 4, 1) != 0) return -1;
   if (cfgAddBool(pCfg, "enableQueryHb", tsEnableQueryHb, false) != 0) return -1;
+  if (cfgAddBool(pCfg, "enableScience", tsEnableScience, false) != 0) return -1;
   if (cfgAddInt32(pCfg, "querySmaOptimize", tsQuerySmaOptimize, 0, 1, 1) != 0) return -1;
   if (cfgAddBool(pCfg, "queryPlannerTrace", tsQueryPlannerTrace, true) != 0) return -1;
   if (cfgAddInt32(pCfg, "queryNodeChunkSize", tsQueryNodeChunkSize, 1024, 128 * 1024, true) != 0) return -1;
@@ -730,6 +733,7 @@ static int32_t taosSetClientCfg(SConfig *pCfg) {
   tsNumOfTaskQueueThreads = cfgGetItem(pCfg, "numOfTaskQueueThreads")->i32;
   tsQueryPolicy = cfgGetItem(pCfg, "queryPolicy")->i32;
   tsEnableQueryHb = cfgGetItem(pCfg, "enableQueryHb")->bval;
+  tsEnableScience = cfgGetItem(pCfg, "enableScience")->bval;  
   tsQuerySmaOptimize = cfgGetItem(pCfg, "querySmaOptimize")->i32;
   tsQueryPlannerTrace = cfgGetItem(pCfg, "queryPlannerTrace")->bval;
   tsQueryNodeChunkSize = cfgGetItem(pCfg, "queryNodeChunkSize")->i32;

tools/shell/src/shellEngine.c

@@ -317,6 +317,7 @@ void shellDumpFieldToFile(TdFilePtr pFile, const char *val, TAOS_FIELD *field, i
   quotationStr[0] = '\"';
   quotationStr[1] = 0;
 
+  int  n;
   char buf[TSDB_MAX_BYTES_PER_ROW];
   switch (field->type) {
     case TSDB_DATA_TYPE_BOOL:
@@ -347,11 +348,24 @@ void shellDumpFieldToFile(TdFilePtr pFile, const char *val, TAOS_FIELD *field, i
       taosFprintfFile(pFile, "%" PRIu64, *((uint64_t *)val));
       break;
     case TSDB_DATA_TYPE_FLOAT:
-      taosFprintfFile(pFile, "%e", GET_FLOAT_VAL(val));
+      if (tsEnableScience) {
+        taosFprintfFile(pFile, "%e", GET_FLOAT_VAL(val));
+      } else {
+        taosFprintfFile(pFile, "%.5f", GET_FLOAT_VAL(val));
+      }
       break;
     case TSDB_DATA_TYPE_DOUBLE:
-      snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.15e", 23, GET_DOUBLE_VAL(val));
-      taosFprintfFile(pFile, "%s", buf);
+      if (tsEnableScience) {
+        snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9e", 23, GET_DOUBLE_VAL(val));
+        taosFprintfFile(pFile, "%s", buf);
+      } else {
+        n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9f", length, GET_DOUBLE_VAL(val));
+        if (n > TMAX(25, length)) {
+          taosFprintfFile(pFile, "%*.15e", length, GET_DOUBLE_VAL(val));
+        } else {
+          taosFprintfFile(pFile, "%s", buf);
+        }
+      }
       break;
     case TSDB_DATA_TYPE_BINARY:
     case TSDB_DATA_TYPE_NCHAR:
@@ -507,6 +521,7 @@ void shellPrintField(const char *val, TAOS_FIELD *field, int32_t width, int32_t
     return;
   }
 
+  int  n;
   char buf[TSDB_MAX_BYTES_PER_ROW];
   switch (field->type) {
     case TSDB_DATA_TYPE_BOOL:
@@ -537,11 +552,24 @@ void shellPrintField(const char *val, TAOS_FIELD *field, int32_t width, int32_t
       printf("%*" PRIu64, width, *((uint64_t *)val));
       break;
     case TSDB_DATA_TYPE_FLOAT:
-      printf("%*e", width, GET_FLOAT_VAL(val));
+      if (tsEnableScience) {
+        printf("%*e", width, GET_FLOAT_VAL(val));
+      } else {
+        printf("%*.5f", width, GET_FLOAT_VAL(val));
+      }
       break;
     case TSDB_DATA_TYPE_DOUBLE:
-      snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%.9e", GET_DOUBLE_VAL(val));
-      printf("%*s", width, buf);
+      if (tsEnableScience) {
+        snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%.9e", GET_DOUBLE_VAL(val));
+        printf("%*s", width, buf);
+      } else {
+        n = snprintf(buf, TSDB_MAX_BYTES_PER_ROW, "%*.9f", width, GET_DOUBLE_VAL(val));
+        if (n > TMAX(25, width)) {
+            printf("%*.15e", width, GET_DOUBLE_VAL(val));
+        } else {
+            printf("%s", buf);
+        }
+      }
       break;
     case TSDB_DATA_TYPE_BINARY:
     case TSDB_DATA_TYPE_NCHAR: