add exp_json and opt_trace for queries

Jeanhwea · Jul 4, 2024 · 5aba88b · 5aba88b
1 parent db5ded2
commit 5aba88b
Showing 1 changed file with 130 additions and 6 deletions.
diff --git a/assets/subquery-examples.org b/assets/subquery-examples.org
@@ -109,7 +109,7 @@
 
 * subq10
 ** subq10 - Default
-- EXISTS 子查询 [[file:subq04_exists_exp.sql.json][exp_json]] | [[file:subq04_exists_opt.sql.json][opt_trace]]
+- 默认 [[file:subq10_sj_default_exp.sql.json][exp_json]] | [[file:subq10_sj_default_opt.sql.json][opt_trace]]
   #+BEGIN_SRC sql
     explain
     select
@@ -134,6 +134,7 @@
   |  2 | MATERIALIZED | a           | NULL       | ALL    | dept_no             | NULL                |    NULL | NULL                |   24 |    33.33 | Using where |
 
 ** subq10 - DuplicateWeedout
+- [[file:subq11_sj_duplicate-weedout_exp.sql.json][exp_json]] | [[file:subq11_sj_duplicate-weedout_opt.sql.json][opt_trace]]
   #+BEGIN_SRC sql
     explain
 
@@ -159,7 +160,7 @@
   |  1 | SIMPLE      | d     | NULL       | eq_ref | PRIMARY       | PRIMARY | 16      | employees.a.dept_no |    1 |   100.00 | End temporary                |
 
 ** subq10 - FirstMatch
-- xx
+- [[file:subq12_sj_first-match_exp.sql.json][exp_json]] | [[file:subq12_sj_first-match_opt.sql.json][opt_trace]]
   #+BEGIN_SRC sql
     explain
 
@@ -179,7 +180,7 @@
   #+END_SRC
 
 ** subq10 - LooseScan
-- xx
+- [[file:subq13_sj_loose-scan_exp.sql.json][exp_json]] | [[file:subq13_sj_loose-scan_opt.sql.json][opt_trace]]
   #+BEGIN_SRC sql
     explain
 
@@ -205,7 +206,7 @@
   |  1 | SIMPLE      | d     | NULL       | eq_ref | PRIMARY       | PRIMARY | 16      | employees.a.dept_no |    1 |   100.00 | End temporary                |
 
 ** subq10 - Materialize
-- xx
+- [[file:subq14_sj_materialization_exp.sql.json][exp_json]] | [[file:subq14_sj_materialization_opt.sql.json][opt_trace]]
   #+BEGIN_SRC sql
     explain
 
@@ -231,5 +232,128 @@
   |  1 | SIMPLE       | <subquery2> | NULL       | eq_ref | <auto_distinct_key> | <auto_distinct_key> |      16 | employees.d.dept_no |    1 |   100.00 | NULL        |
   |  2 | MATERIALIZED | a           | NULL       | ALL    | dept_no             | NULL                |    NULL | NULL                |   24 |    33.33 | Using where |
 
-* subq14
-- MaterializeScan 参考 | [[*subq03][subq03]]
+* subq20
+** subq20 - Default
+- [[file:subq20_sj_default_exp.sql.json][exp_json]] | [[file:subq20_sj_default_opt.sql.json][opt_trace]]
+  #+BEGIN_SRC sql
+    explain
+    select
+      ,*
+    from
+      employees e
+    where
+      e.emp_no in (
+        select
+          a.emp_no
+        from
+          dept_manager a
+        where
+          a.dept_no >= 'd003');
+  #+END_SRC
+
+  #+RESULTS:
+  | id | select_type | table | partitions | type   | possible_keys   | key     | key_len | ref                | rows | filtered | Extra                               |
+  |----+-------------+-------+------------+--------+-----------------+---------+---------+--------------------+------+----------+-------------------------------------|
+  |  1 | SIMPLE      | a     | NULL       | index  | PRIMARY,dept_no | PRIMARY |      20 | NULL               |   24 |   100.00 | Using where; Using index; LooseScan |
+  |  1 | SIMPLE      | e     | NULL       | eq_ref | PRIMARY         | PRIMARY |       4 | employees.a.emp_no |    1 |   100.00 | NULL                                |
+
+** subq20 - DuplicateWeedout
+- [[file:subq21_sj_duplicate-weedout_exp.sql.json][exp_json]] | [[file:subq21_sj_duplicate-weedout_opt.sql.json][opt_trace]]
+  #+BEGIN_SRC sql
+    explain
+    select
+      ,*
+    from
+      employees e
+    where
+      e.emp_no in (
+        select
+          /*+ SEMIJOIN(DUPSWEEDOUT) */
+          a.emp_no
+        from
+          dept_manager a
+        where
+          a.dept_no >= 'd003');
+  #+END_SRC
+
+  #+RESULTS:
+  | id | select_type | table | partitions | type   | possible_keys   | key     | key_len | ref                | rows | filtered | Extra                                     |
+  |----+-------------+-------+------------+--------+-----------------+---------+---------+--------------------+------+----------+-------------------------------------------|
+  |  1 | SIMPLE      | a     | NULL       | range  | PRIMARY,dept_no | dept_no |      16 | NULL               |   20 |   100.00 | Using where; Using index; Start temporary |
+  |  1 | SIMPLE      | e     | NULL       | eq_ref | PRIMARY         | PRIMARY |       4 | employees.a.emp_no |    1 |   100.00 | End temporary                             |
+
+** subq20 - FirstMatch
+- [[file:subq22_sj_first-match_exp.sql.json][exp_json]]
+  #+BEGIN_SRC sql
+    explain
+    select
+      ,*
+    from
+      employees e
+    where
+      e.emp_no in (
+        select
+          /*+ SEMIJOIN(FIRSTMATCH) */
+          a.emp_no
+        from
+          dept_manager a
+        where
+          a.dept_no >= 'd003');
+  #+END_SRC
+
+  #+RESULTS:
+  | id | select_type | table | partitions | type | possible_keys   | key     | key_len | ref                |   rows | filtered | Extra                                   |
+  |----+-------------+-------+------------+------+-----------------+---------+---------+--------------------+--------+----------+-----------------------------------------|
+  |  1 | SIMPLE      | e     | NULL       | ALL  | PRIMARY         | NULL    | NULL    | NULL               | 276023 |   100.00 | NULL                                    |
+  |  1 | SIMPLE      | a     | NULL       | ref  | PRIMARY,dept_no | PRIMARY | 4       | employees.e.emp_no |      1 |    83.33 | Using where; Using index; FirstMatch(e) |
+
+** subq20 - LooseScan
+- [[file:subq23_sj_loose-scan_exp.sql.json][exp_json]] | [[file:subq23_sj_loose-scan_opt.sql.json][opt_trace]]
+  #+BEGIN_SRC sql
+    explain
+    select
+      ,*
+    from
+      employees e
+    where
+      e.emp_no in (
+        select
+          /*+ SEMIJOIN(LOOSESCAN) */
+          a.emp_no
+        from
+          dept_manager a
+        where
+          a.dept_no >= 'd003');
+  #+END_SRC
+
+  #+RESULTS:
+  | id | select_type | table | partitions | type   | possible_keys   | key     | key_len | ref                | rows | filtered | Extra                               |
+  |----+-------------+-------+------------+--------+-----------------+---------+---------+--------------------+------+----------+-------------------------------------|
+  |  1 | SIMPLE      | a     | NULL       | index  | PRIMARY,dept_no | PRIMARY |      20 | NULL               |   24 |   100.00 | Using where; Using index; LooseScan |
+  |  1 | SIMPLE      | e     | NULL       | eq_ref | PRIMARY         | PRIMARY |       4 | employees.a.emp_no |    1 |   100.00 | NULL                                |
+
+** subq20 - Materialize
+- [[file:subq24_sj_materialization_exp.sql.json][exp_json]] | [[file:subq24_sj_materialization_opt.sql.json][opt_trace]]
+  #+BEGIN_SRC sql
+    explain
+    select
+      ,*
+    from
+      employees e
+    where
+      e.emp_no in (
+        select
+          /*+ SEMIJOIN(MATERIALIZATION) */
+          a.emp_no
+        from
+          dept_manager a
+        where
+          a.dept_no >= 'd003');
+  #+END_SRC
+
+  #+RESULTS:
+  | id | select_type  | table       | partitions | type   | possible_keys   | key     | key_len | ref                | rows | filtered | Extra                    |
+  |----+--------------+-------------+------------+--------+-----------------+---------+---------+--------------------+------+----------+--------------------------|
+  |  1 | SIMPLE       | <subquery2> | NULL       | ALL    | NULL            | NULL    |    NULL | NULL               | NULL |   100.00 | NULL                     |
+  |  1 | SIMPLE       | e           | NULL       | eq_ref | PRIMARY         | PRIMARY |       4 | <subquery2>.emp_no |    1 |   100.00 | NULL                     |
+  |  2 | MATERIALIZED | a           | NULL       | range  | PRIMARY,dept_no | dept_no |      16 | NULL               |   20 |   100.00 | Using where; Using index |