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id | level_title | quiz_desc | overall_quest |
---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... |
2 | Seqs | sequences desc... | overall question... |
3 | Prop Logic | logic desc ... | overall quest... |
4 | Pred Logic | pred desc 1 ... | predicase quest... |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | null | null | null | null |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40213894 | 1 | 90 | 2021-01-14 21:52:00 |
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40213894 | 2 | 95 | 2021-01-17 22:42:50 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40213894 | 4 | 100 | 2021-01-17 22:42:50 |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40213894 | 1 | 90 | 2021-01-14 21:52:00 |
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40213894 | 2 | 95 | 2021-01-17 22:42:50 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40213894 | 4 | 100 | 2021-01-17 22:42:50 |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1 Sets The purpose of Suppose we have 40204123 1 80 2021-01-12 ' at line 5
l_id | l_title | l_q_desc | l_o_quest | s_no | s_l_id | COALESCE(tab.s_points, 0) | s_ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | null | null | 0 | null |
l_id | l_title | l_q_desc | l_o_quest | s_no | s_l_id | s_points | s_ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40213894 | 1 | 90 | 2021-01-14 21:52:00 |
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40213894 | 2 | 95 | 2021-01-17 22:42:50 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40213894 | 4 | 100 | 2021-01-17 22:42:50 |
id | level_title | quiz_desc | overall_quest | student_no | level_id | points | ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 4 | null | null |
EXPLAIN |
---|
-> Sort: student_points.student_no, level_quiz.id (actual time=0.099..0.100 rows=8 loops=1) -> Stream results (cost=2.66 rows=2) (actual time=0.056..0.075 rows=8 loops=1) -> Inner hash join (level_quiz.id = student_points.level_id) (cost=2.66 rows=2) (actual time=0.049..0.060 rows=8 loops=1) -> Table scan on level_quiz (cost=0.15 rows=4) (actual time=0.005..0.011 rows=4 loops=1) -> Hash -> Filter: (student_points.student_no in (40204123,40213894)) (cost=1.45 rows=2) (actual time=0.020..0.028 rows=8 loops=1) -> Table scan on student_points (cost=1.45 rows=12) (actual time=0.013..0.025 rows=12 loops=1) |
l_id | l_title | l_q_desc | l_o_quest | s_no | s_l_id | s_points | s_ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 4 | null | null |
l_id | l_title | l_q_desc | l_o_quest | s_no | s_l_id | s_points | s_ts |
---|---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 1 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 2 | 75 | 2021-01-12 15:38:06 |
3 | Prop Logic | logic desc ... | overall quest... | 40204123 | 3 | 30 | 2021-01-13 22:13:13 |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40204123 | 4 | null | null |
1 | Sets | The purpose of... | Suppose we have... | 40213894 | 1 | 90 | 2021-01-14 21:52:00 |
2 | Seqs | sequences desc... | overall question... | 40213894 | 2 | 95 | 2021-01-17 22:42:50 |
3 | Prop Logic | logic desc ... | overall quest... | 40213894 | 3 | null | null |
4 | Pred Logic | pred desc 1 ... | predicase quest... | 40213894 | 4 | 100 | 2021-01-17 22:42:50 |
student_no | id |
---|---|
12345678 | 1 |
12345678 | 2 |
12345678 | 3 |
12345678 | 4 |
40204123 | 1 |
40204123 | 2 |
40204123 | 3 |
40204123 | 4 |
40213894 | 1 |
40213894 | 2 |
40213894 | 3 |
40213894 | 4 |
id | LT: | quiz_desc | overall_quest | student_no | Points: | ts |
---|---|---|---|---|---|---|
1 | Sets | The purpose of... | Suppose we have... | 40204123 | 80 | 2021-01-12 15:37:11 |
2 | Seqs | sequences desc... | overall question... | 40204123 | 75 | 2021-01-12 15:38:06 |
3 | Prop L | logic desc ... | overall quest... | 40204123 | 30 | 2021-01-13 22:13:13 |
4 | Pred L | pred desc 1 ... | predicase quest... | 40204123 | 0 | null |
1 | Sets | The purpose of... | Suppose we have... | 40213894 | 90 | 2021-01-14 21:52:00 |
2 | Seqs | sequences desc... | overall question... | 40213894 | 95 | 2021-01-17 22:42:50 |
3 | Prop L | logic desc ... | overall quest... | 40213894 | 0 | null |
4 | Pred L | pred desc 1 ... | predicase quest... | 40213894 | 100 | 2021-01-17 22:42:50 |
EXPLAIN |
---|
-> Sort: t2.student_no, t2.id (actual time=0.184..0.185 rows=8 loops=1) -> Stream results (cost=32.42 rows=320) (actual time=0.133..0.170 rows=8 loops=1) -> Left hash join (sp2.level_id = lq2.id), (sp2.student_no = t2.student_no) (cost=32.42 rows=320) (actual time=0.125..0.148 rows=8 loops=1) -> Nested loop inner join (cost=5.85 rows=32) (actual time=0.082..0.100 rows=8 loops=1) -> Table scan on lq2 (cost=0.65 rows=4) (actual time=0.005..0.015 rows=4 loops=1) -> Index lookup on t2 using <auto_key2> (id=lq2.id) (actual time=0.001..0.002 rows=2 loops=4) -> Materialize (cost=4.60 rows=8) (actual time=0.020..0.021 rows=2 loops=4) -> Table scan on <temporary> (actual time=0.000..0.001 rows=8 loops=1) -> Temporary table with deduplication (cost=4.60 rows=8) (actual time=0.062..0.063 rows=8 loops=1) -> Inner hash join (no condition) (cost=4.60 rows=8) (actual time=0.046..0.049 rows=24 loops=1) -> Table scan on t1 (cost=1.48 rows=4) (actual time=0.000..0.001 rows=4 loops=1) -> Materialize (cost=0.65 rows=4) (actual time=0.021..0.022 rows=4 loops=1) -> Table scan on <temporary> (actual time=0.000..0.001 rows=4 loops=1) -> Temporary table with deduplication (cost=0.65 rows=4) (actual time=0.016..0.017 rows=4 loops=1) -> Table scan on lq1 (cost=0.65 rows=4) (actual time=0.004..0.008 rows=4 loops=1) -> Hash -> Filter: (sp1.student_no in (40204123,40213894)) (cost=1.25 rows=2) (actual time=0.010..0.016 rows=6 loops=1) -> Table scan on sp1 (cost=1.25 rows=10) (actual time=0.005..0.014 rows=10 loops=1) -> Hash -> Table scan on sp2 (cost=0.16 rows=10) (actual time=0.015..0.026 rows=10 loops=1) |