diff --git a/src/plugins/http/inc/httpRestJson.h b/src/plugins/http/inc/httpRestJson.h
index b3b1b33e4eabbce960ad186318ea4611093bf523..5f19983826a4f90bc3498ca82cc9fd495b4f300c 100644
--- a/src/plugins/http/inc/httpRestJson.h
+++ b/src/plugins/http/inc/httpRestJson.h
@@ -34,8 +34,8 @@
 #define REST_JSON_DATA_LEN       4
 #define REST_JSON_HEAD           "head"
 #define REST_JSON_HEAD_LEN       4
-#define REST_JSON_HEAD_TYPE      "head_type"
-#define REST_JSON_HEAD_TYPE_LEN  9
+#define REST_JSON_HEAD_INFO      "column_meta"
+#define REST_JSON_HEAD_INFO_LEN  11
 #define REST_JSON_ROWS           "rows"
 #define REST_JSON_ROWS_LEN       4
 #define REST_JSON_AFFECT_ROWS    "affected_rows"
diff --git a/src/plugins/http/src/httpRestJson.c b/src/plugins/http/src/httpRestJson.c
index 1172c4eef64250af46530edbed4c56715c3b763e..61a5a361c4865d6b3dbac73773cc0b8cfc562e56 100644
--- a/src/plugins/http/src/httpRestJson.c
+++ b/src/plugins/http/src/httpRestJson.c
@@ -75,24 +75,42 @@ void restStartSqlJson(HttpContext *pContext, HttpSqlCmd *cmd, TAOS_RES *result)
   // head array end
   httpJsonToken(jsonBuf, JsonArrEnd);
 
-  // head_type begin
+  // column_meta begin
   httpJsonItemToken(jsonBuf);
-  httpJsonPairHead(jsonBuf, REST_JSON_HEAD_TYPE, REST_JSON_HEAD_TYPE_LEN);
-  // head_type array begin
+  httpJsonPairHead(jsonBuf, REST_JSON_HEAD_INFO, REST_JSON_HEAD_INFO_LEN);
+  // column_meta array begin
   httpJsonItemToken(jsonBuf);
   httpJsonToken(jsonBuf, JsonArrStt);
 
   if (num_fields == 0) {
+    httpJsonItemToken(jsonBuf);
+    httpJsonToken(jsonBuf, JsonArrStt);
+
+    httpJsonItemToken(jsonBuf);
+    httpJsonString(jsonBuf, REST_JSON_AFFECT_ROWS, REST_JSON_AFFECT_ROWS_LEN);
     httpJsonItemToken(jsonBuf);
     httpJsonInt(jsonBuf, TSDB_DATA_TYPE_INT);
+    httpJsonItemToken(jsonBuf);
+    httpJsonInt(jsonBuf, 4);
+
+    httpJsonToken(jsonBuf, JsonArrEnd);
   } else {
     for (int32_t i = 0; i < num_fields; ++i) {
+      httpJsonItemToken(jsonBuf);
+      httpJsonToken(jsonBuf, JsonArrStt);
+
+      httpJsonItemToken(jsonBuf);
+      httpJsonString(jsonBuf, fields[i].name, (int32_t)strlen(fields[i].name));
       httpJsonItemToken(jsonBuf);
       httpJsonInt(jsonBuf, fields[i].type);
+      httpJsonItemToken(jsonBuf);
+      httpJsonInt(jsonBuf, fields[i].bytes);
+
+      httpJsonToken(jsonBuf, JsonArrEnd);
     }
   }
 
-  // head_type array end
+  // column_meta array end
   httpJsonToken(jsonBuf, JsonArrEnd);
 
   // data begin
diff --git a/tests/script/general/http/restful.sim b/tests/script/general/http/restful.sim
index 0e9b9de13236c978d3b0e63ba3b1cf1d054f5ea9..6ebf5644e7a99593ebac0302c3dcdbc0a27fc8c1 100644
--- a/tests/script/general/http/restful.sim
+++ b/tests/script/general/http/restful.sim
@@ -39,14 +39,14 @@ print ===============  step3 - query data
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04' -d 'select * from d1.table_rest' 127.0.0.1:7111/rest/sql
 print curl 127.0.0.1:7111/rest/sql -----> $system_content
-if $system_content != @{"status":"succ","head":["ts","i"],"head_type":[9,4],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10]],"rows":10}@ then
+if $system_content != @{"status":"succ","head":["ts","i"],"column_meta":[["ts",9,8],["i",4,4]],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10]],"rows":10}@ then
   return -1
 endi
 
 print ===============  step4 - insert data
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04' -d "insert into d1.table_rest values('2017-12-25 21:28:51.022', 11)" 127.0.0.1:7111/rest/sql
 print curl 127.0.0.1:7111/rest/sql -----> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[1]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[1]],"rows":1}@ then
   return -1
 endi
 
@@ -54,7 +54,7 @@ print ===============  step5 - query data
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04' -d 'select * from d1.table_rest' 127.0.0.1:7111/rest/sql
 print curl 127.0.0.1:7111/rest/sql -----> $system_content
-if $system_content != @{"status":"succ","head":["ts","i"],"head_type":[9,4],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10],["2017-12-25 21:28:51.022",11]],"rows":11}@ then
+if $system_content != @{"status":"succ","head":["ts","i"],"column_meta":[["ts",9,8],["i",4,4]],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10],["2017-12-25 21:28:51.022",11]],"rows":11}@ then
   return -1
 endi
 
diff --git a/tests/script/general/http/restful_full.sim b/tests/script/general/http/restful_full.sim
index 64128d02dc48152f67ecc2be8171cb59a5678cd0..8094a943f507a702bb56a7d026da672134188b83 100644
--- a/tests/script/general/http/restful_full.sim
+++ b/tests/script/general/http/restful_full.sim
@@ -88,13 +88,13 @@ print ===============  step2 - no db
 #11
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d 'show databases' 127.0.0.1:7111/rest/sql
 print 11-> $system_content
-if $system_content != @{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"head_type":[8,9,4,4,3,3,3,8,4,4,4,4,2,4,2,2,8,2,8],"data":[],"rows":0}@ then
+if $system_content != @{"status":"succ","head":["name","created_time","ntables","vgroups","replica","quorum","days","keep0,keep1,keep(D)","cache(MB)","blocks","minrows","maxrows","wallevel","fsync","comp","cachelast","precision","update","status"],"column_meta":[["name",8,32],["created_time",9,8],["ntables",4,4],["vgroups",4,4],["replica",3,2],["quorum",3,2],["days",3,2],["keep0,keep1,keep(D)",8,24],["cache(MB)",4,4],["blocks",4,4],["minrows",4,4],["maxrows",4,4],["wallevel",2,1],["fsync",4,4],["comp",2,1],["cachelast",2,1],["precision",8,3],["update",2,1],["status",8,10]],"data":[],"rows":0}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d 'create database d1' 127.0.0.1:7111/rest/sql
 print 12-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[0]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[0]],"rows":1}@ then
   return -1
 endi
 
@@ -160,26 +160,26 @@ endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' create table d1.t1 (ts timestamp, speed int)' 127.0.0.1:7111/rest/sql
 print 22-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[0]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[0]],"rows":1}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' select * from d1.t1 ' 127.0.0.1:7111/rest/sql
 print 23-> $system_content
-if $system_content != @{"status":"succ","head":["ts","speed"],"head_type":[9,4],"data":[],"rows":0}@ then
+if $system_content != @{"status":"succ","head":["ts","speed"],"column_meta":[["ts",9,8],["speed",4,4]],"data":[],"rows":0}@ then
   return -1
 endi
 
 #24
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d "insert into d1.t1 values('2017-12-25 21:28:41.022', 1)" 127.0.0.1:7111/rest/sql
 print 24-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[1]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[1]],"rows":1}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' select * from d1.t1 ' 127.0.0.1:7111/rest/sql
 print 25-> $system_content
-if $system_content != @{"status":"succ","head":["ts","speed"],"head_type":[9,4],"data":[["2017-12-25 21:28:41.022",1]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["ts","speed"],"column_meta":[["ts",9,8],["speed",4,4]],"data":[["2017-12-25 21:28:41.022",1]],"rows":1}@ then
   return -1
 endi
 
@@ -208,32 +208,32 @@ system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl
 #27
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' select * from d1.t1 ' 127.0.0.1:7111/rest/sql
 print 27-> $system_content
-if $system_content != @{"status":"succ","head":["ts","speed"],"head_type":[9,4],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10],["2017-12-25 21:28:51.022",11]],"rows":11}@ then
+if $system_content != @{"status":"succ","head":["ts","speed"],"column_meta":[["ts",9,8],["speed",4,4]],"data":[["2017-12-25 21:28:41.022",1],["2017-12-25 21:28:42.022",2],["2017-12-25 21:28:43.022",3],["2017-12-25 21:28:44.022",4],["2017-12-25 21:28:45.022",5],["2017-12-25 21:28:46.022",6],["2017-12-25 21:28:47.022",7],["2017-12-25 21:28:48.022",8],["2017-12-25 21:28:49.022",9],["2017-12-25 21:28:50.022",10],["2017-12-25 21:28:51.022",11]],"rows":11}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d 'create database d2' 127.0.0.1:7111/rest/sql
 print 28-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[0]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[0]],"rows":1}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' create table d2.t1 (ts timestamp, speed int)' 127.0.0.1:7111/rest/sql
 print 29-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[0]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[0]],"rows":1}@ then
   return -1
 endi
 
 #30
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d "insert into d2.t1 values('2017-12-25 21:28:41.022', 1)" 127.0.0.1:7111/rest/sql
 print 30-> $system_content
-if $system_content != @{"status":"succ","head":["affected_rows"],"head_type":[4],"data":[[1]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["affected_rows"],"column_meta":[["affected_rows",4,4]],"data":[[1]],"rows":1}@ then
   return -1
 endi
 
 system_content curl -H 'Authorization: Taosd /KfeAzX/f9na8qdtNZmtONryp201ma04bEl8LcvLUd7a8qdtNZmtONryp201ma04'  -d ' select * from d2.t1 ' 127.0.0.1:7111/rest/sql
 print 31-> $system_content
-if $system_content != @{"status":"succ","head":["ts","speed"],"head_type":[9,4],"data":[["2017-12-25 21:28:41.022",1]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["ts","speed"],"column_meta":[["ts",9,8],["speed",4,4]],"data":[["2017-12-25 21:28:41.022",1]],"rows":1}@ then
   return -1
 endi
 
diff --git a/tests/script/general/http/telegraf.sim b/tests/script/general/http/telegraf.sim
index 03116e9f3bee44206fc858c5360fbe9b137f5bbe..f3426971864e6cf510ff6600b7731cf81f64f952 100644
--- a/tests/script/general/http/telegraf.sim
+++ b/tests/script/general/http/telegraf.sim
@@ -285,7 +285,7 @@ system_content curl -u root:taosdata -d  'select count(*) from db.win_cpu' 127.0
 
 print $system_content
 
-if $system_content != @{"status":"succ","head":["count(*)"],"head_type":[5],"data":[[3]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["count(*)"],"column_meta":[["count(*)",5,8]],"data":[[3]],"rows":1}@ then
   return -1
 endi
 
diff --git a/tests/script/unique/http/opentsdb.sim b/tests/script/unique/http/opentsdb.sim
index aad9b87cbea9c3325a9ff112e1e80271ae1183f0..7d1e6b03d4547a6b0b2a6a7857000a8a6518a002 100644
--- a/tests/script/unique/http/opentsdb.sim
+++ b/tests/script/unique/http/opentsdb.sim
@@ -169,7 +169,7 @@ endi
 
 system_content curl -u root:taosdata -d  'select * from db.sys_cpu_d_bbb_lga_1_web01' 127.0.0.1:7111/rest/sql/
 print $system_content
-if $system_content != @{"status":"succ","head":["ts","value"],"head_type":[9,7],"data":[["2012-09-05 20:00:00.000",18.000000000]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["ts","value"],"column_meta":[["ts",9,8],["value",7,8]],"data":[["2012-09-05 20:00:00.000",18.000000000]],"rows":1}@ then
   return -1
 endi
 
@@ -186,7 +186,7 @@ system_content curl -u root:taosdata -d  'select * from db.sys_cpu_d_bbb_lga_1_w
 
 print $system_content
 
-if $system_content != @{"status":"succ","head":["ts","value"],"head_type":[9,7],"data":[["2012-09-05 20:00:00.000",18.000000000],["2012-09-05 20:00:05.000",18.000000000]],"rows":2}@ then
+if $system_content != @{"status":"succ","head":["ts","value"],"column_meta":[["ts",9,8],["value",7,8]],"data":[["2012-09-05 20:00:00.000",18.000000000],["2012-09-05 20:00:05.000",18.000000000]],"rows":2}@ then
   return -1
 endi
 
@@ -194,7 +194,7 @@ system_content curl -u root:taosdata -d  'select count(*) from db.sys_cpu_d_bbb'
 
 print $system_content
 
-if $system_content != @{"status":"succ","head":["count(*)"],"head_type":[5],"data":[[3]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["count(*)"],"column_meta":[["count(*)",5,8]],"data":[[3]],"rows":1}@ then
   return -1
 endi
 
@@ -211,7 +211,7 @@ system_content curl -u root:taosdata -d  'select * from db.sys_mem_d_bbb_lga_1_w
 
 print $system_content
 
-if $system_content != @{"status":"succ","head":["ts","value"],"head_type":[9,7],"data":[["2012-09-05 20:00:00.000",8.000000000],["2012-09-05 20:00:05.000",9.000000000]],"rows":2}@ then
+if $system_content != @{"status":"succ","head":["ts","value"],"column_meta":[["ts",9,8],["value",7,8]],"data":[["2012-09-05 20:00:00.000",8.000000000],["2012-09-05 20:00:05.000",9.000000000]],"rows":2}@ then
   return -1
 endi
 
@@ -219,7 +219,7 @@ system_content curl -u root:taosdata -d  'select count(*) from db.sys_mem_d_bbb'
 
 print $system_content
 
-if $system_content != @{"status":"succ","head":["count(*)"],"head_type":[5],"data":[[2]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["count(*)"],"column_meta":[["count(*)",5,8]],"data":[[2]],"rows":1}@ then
   return -1
 endi
 
@@ -233,7 +233,7 @@ system_content curl -u root:taosdata -d  '[{"metric": "sys_cpu","timestamp": 134
 
 system_content curl -u root:taosdata -d  'select count(*) from db.sys_cpu_d_bbb' 127.0.0.1:7111/rest/sql/
 print $system_content
-if $system_content != @{"status":"succ","head":["count(*)"],"head_type":[5],"data":[[7]],"rows":1}@ then
+if $system_content != @{"status":"succ","head":["count(*)"],"column_meta":[["count(*)",5,8]],"data":[[7]],"rows":1}@ then
   return -1
 endi
 
diff --git a/tests/tsim/src/simExe.c b/tests/tsim/src/simExe.c
index 83ca46599cbb7e219bf1c67123373d81159db4ec..dbda5f1bbdd01a451376f8afe7717b7290980796 100644
--- a/tests/tsim/src/simExe.c
+++ b/tests/tsim/src/simExe.c
@@ -146,7 +146,7 @@ char *simGetVariable(SScript *script, char *varName, int32_t varLen) {
 int32_t simExecuteExpression(SScript *script, char *exp) {
   char *  op1, *op2, *var1, *var2, *var3, *rest;
   int32_t op1Len, op2Len, var1Len, var2Len, var3Len, val0, val1;
-  char    t0[512], t1[512], t2[512], t3[1024];
+  char    t0[1024], t1[1024], t2[1024], t3[2048];
   int32_t result;
 
   rest = paGetToken(exp, &var1, &var1Len);