explain add test cases

  go test -update ./...

advisor/testdata/TestListTestSQLs.golden

@@ -83,3 +83,5 @@ SELECT	DATE_FORMAT(t.last_update, '%Y-%m-%d'),	COUNT(DISTINCT (t.city))	FROM cit
 create table hello.t (id int unsigned);
 select * from tb where data >= '';
 alter table tb alter column id drop default;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;

ast/testdata/TestCompress.golden

@@ -168,3 +168,7 @@ select * from tb where data >= '';
 select * from tb where data >= '';
 alter table tb alter column id drop default;
 alter table tb alter column id drop default;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;

ast/testdata/TestFormat.golden

@@ -880,3 +880,26 @@ ALTER TABLE
   tb  alter  column  id  
 DROP  
   DEFAULT;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+
+SELECT  
+  maxId, minId  
+FROM  
+  (
+SELECT  
+  MAX( film_id) maxId, MIN( film_id) minId  
+FROM  
+  film  
+WHERE  
+  last_update  > '2016-03-27 02:01:01'
+) as  d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;
+
+SELECT  
+  maxId, minId  
+FROM  
+  (
+SELECT  
+  MAX( film_id) maxId, MIN( film_id) minId  
+FROM  
+  film) as  d;

ast/testdata/TestPretty.golden

@@ -1524,4 +1524,27 @@ ALTER TABLE
   tb  alter  column  id  
 DROP  
   DEFAULT;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+
+SELECT  
+  maxId, minId  
+FROM  
+  (
+SELECT  
+  MAX( film_id) maxId, MIN( film_id) minId  
+FROM  
+  film  
+WHERE  
+  last_update  > '2016-03-27 02:01:01'
+) as  d;
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;
+
+SELECT  
+  maxId, minId  
+FROM  
+  (
+SELECT  
+  MAX( film_id) maxId, MIN( film_id) minId  
+FROM  
+  film) as  d;
 select 1

ast/testdata/TestQueryType.golden

@@ -88,3 +88,5 @@ SELECT
 CREATE
 SELECT
 ALTER
+SELECT
+SELECT

ast/testdata/TestSchemaMetaInfo.golden

@@ -190,3 +190,7 @@ select * from tb where data >= '';
 [`sakila`.`tb`]
 alter table tb alter column id drop default;
 [`sakila`.tb`]
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+[`sakila`.`film`]
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;
+[`sakila`.`film`]

ast/testdata/TestTokenize.golden

@@ -168,3 +168,7 @@ select * from tb where data >= '';
 [{5 SELECT  0} {7 * 0} {0   0} {5 FROM  0} {1 tb  0} {5 WHERE  0} {1 data  0} {7 >= 0} {0   0} {2 '' 0} {7 ; 0}]
 alter table tb alter column id drop default;
 [{5 ALTER TABLE  0} {1 tb  0} {1 alter  0} {1 column  0} {1 id  0} {5 DROP  0} {4 DEFAULT; 0}]
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;
+[{5 SELECT  0} {1 maxId, 0} {0   0} {1 minId  0} {5 FROM  0} {7 ( 0} {5 SELECT  0} {4 MAX( 0} {1 film_id) 0} {0   0} {1 maxId, 0} {0   0} {4 MIN( 0} {1 film_id) 0} {0   0} {1 minId  0} {5 FROM  0} {1 film  0} {5 WHERE  0} {1 last_update  0} {7 > 0} {0   0} {2 '2016-03-27 02:01:01' 0} {7 ) 0} {0   0} {1 as  0} {1 d; 0}]
+select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;
+[{5 SELECT  0} {1 maxId, 0} {0   0} {1 minId  0} {5 FROM  0} {7 ( 0} {5 SELECT  0} {4 MAX( 0} {1 film_id) 0} {0   0} {1 maxId, 0} {0   0} {4 MIN( 0} {1 film_id) 0} {0   0} {1 minId  0} {5 FROM  0} {1 film) 0} {0   0} {1 as  0} {1 d; 0}]

ast/testdata/TestTokenizer.golden

@@ -210,7 +210,7 @@
 }
 []ast.Token{
     {Type:57348, Val:"select", i:0},
-    {Type:57592, Val:"sql_calc_found_rows", i:0},
+    {Type:57593, Val:"sql_calc_found_rows", i:0},
     {Type:57396, Val:"col", i:0},
     {Type:57353, Val:"from", i:0},
     {Type:57396, Val:"tbl", i:0},

common/cases.go

@@ -205,5 +205,9 @@ func init() {
 
 		// https://github.com/XiaoMi/soar/issues/163
 		"alter table tb alter column id drop default;",
+
+		// explain extra info "Select tables optimized away"
+		"select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film where last_update > '2016-03-27 02:01:01') as d;",
+		"select maxId, minId from (select max(film_id) maxId, min(film_id) minId from film) as d;",
 	}
 }