MDEV-7834: ANALYZE FORMAT=JSON output column should be named ANALYZE

mysql-test/r/analyze_format_json.result

@@ -3,7 +3,7 @@ create table t0 (a int);
 INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
 # r_filtered=30%, because 3 rows match: 0,1,2
 analyze format=json select * from t0 where a<3;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -31,7 +31,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	r_rows	filtered	r_f
 1	SIMPLE	t1	ref	a	a	5	test.t0.a	1	NULL	100.00	NULL	
 analyze format=json 
 select * from t0, t1 where t1.a=t0.a and t0.a > 9;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -71,7 +71,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	r_rows	filtered	r_f
 1	SIMPLE	t1	ref	a	a	5	test.t0.a	1	1.00	100.00	40.00	Using where
 analyze format=json
 select * from t0, t1 where t1.a=t0.a and t1.b<4;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -113,7 +113,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	r_rows	filtered	r_f
 1	SIMPLE	tbl2	ALL	NULL	NULL	NULL	NULL	100	100.00	100.00	94.00	Using where; Using join buffer (flat, BNL join)
 analyze format=json
 select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -150,7 +150,7 @@ EXPLAIN
 }
 analyze format=json
 select * from t1 tbl1, t1 tbl2 where tbl1.b<20 and tbl2.b<60 and tbl1.c > tbl2.c;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -196,7 +196,7 @@ insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
 create table t2 (a int, key(a));
 insert into t2 values (0),(1);
 analyze format=json select * from t1 straight_join t2 force index(a) where t2.a=t1.a;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,
@@ -244,7 +244,7 @@ select database();
 database()
 NULL
 analyze format=json select * from test.t1 where t1.a<5;
-EXPLAIN
+ANALYZE
 {
   "query_block": {
     "select_id": 1,

sql/sql_class.cc

@@ -2464,7 +2464,7 @@ int THD::send_explain_fields(select_result *result, uint8 explain_flags, bool is
 {
   List<Item> field_list;
   if (lex->explain_json)
-    make_explain_json_field_list(field_list);
+    make_explain_json_field_list(field_list, is_analyze);
   else
     make_explain_field_list(field_list, explain_flags, is_analyze);
 
@@ -2475,9 +2475,12 @@ int THD::send_explain_fields(select_result *result, uint8 explain_flags, bool is
 }
 
 
-void THD::make_explain_json_field_list(List<Item> &field_list)
+void THD::make_explain_json_field_list(List<Item> &field_list, bool is_analyze)
 {
-  Item *item= new Item_empty_string("EXPLAIN", 78, system_charset_info);
+  Item *item= new Item_empty_string((is_analyze ?
+                                     "ANALYZE" :
+                                     "EXPLAIN"),
+                                    78, system_charset_info);
   field_list.push_back(item);
 }
 

sql/sql_class.h

@@ -3171,7 +3171,7 @@ public:
                           bool is_analyze);
   void make_explain_field_list(List<Item> &field_list, uint8 explain_flags,
                                bool is_analyze);
-  void make_explain_json_field_list(List<Item> &field_list);
+  void make_explain_json_field_list(List<Item> &field_list, bool is_analyze);
 
   /**
     Clear the current error, if any.