mirror of
https://gitlab.com/cznic/sqlite.git
synced 2024-11-24 02:26:14 +00:00
146 lines
4.4 KiB
Plaintext
146 lines
4.4 KiB
Plaintext
# 2021-12-29
|
|
#
|
|
# The author disclaims copyright to this source code. In place of
|
|
# a legal notice, here is a blessing:
|
|
#
|
|
# May you do good and not evil.
|
|
# May you find forgiveness for yourself and forgive others.
|
|
# May you share freely, never taking more than you give.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# Testing the compound-SELECT merge algorithm to ensure that it works
|
|
# when it tries to balance the merge tree.
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
set testprefix merge1
|
|
|
|
ifcapable !vtab {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
load_static_extension db series
|
|
|
|
|
|
optimization_control db all on
|
|
do_execsql_test 100 {
|
|
WITH data(v) AS (
|
|
SELECT value FROM generate_series(1,35,3)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,30,4)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(20,50,5)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(30,60,6)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(1,50,7)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,80,8)
|
|
)
|
|
SELECT v FROM data ORDER BY v;
|
|
} {1 1 4 7 8 10 10 10 13 14 15 16 18 18 19 20 22 22 22 25 25 26 26 28 29 30 30 30 31 34 34 35 36 36 40 42 42 43 45 48 50 50 50 54 58 60 66 74}
|
|
do_eqp_test 101 {
|
|
WITH data(v) AS (
|
|
SELECT value FROM generate_series(1,35,3)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,30,4)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(20,50,5)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(30,60,6)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(1,50,7)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,80,8)
|
|
)
|
|
SELECT v FROM data ORDER BY v;
|
|
} {
|
|
QUERY PLAN
|
|
`--MERGE (UNION ALL)
|
|
|--LEFT
|
|
| `--MERGE (UNION ALL)
|
|
| |--LEFT
|
|
| | `--MERGE (UNION ALL)
|
|
| | |--LEFT
|
|
| | | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| | `--RIGHT
|
|
| | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| `--RIGHT
|
|
| `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
`--RIGHT
|
|
`--MERGE (UNION ALL)
|
|
|--LEFT
|
|
| `--MERGE (UNION ALL)
|
|
| |--LEFT
|
|
| | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| `--RIGHT
|
|
| `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
`--RIGHT
|
|
`--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
}
|
|
|
|
# Same test with the blanced-merge optimization
|
|
# disabled. Should give the exact same answer.
|
|
#
|
|
optimization_control db balanced-merge off
|
|
db cache flush
|
|
do_execsql_test 110 {
|
|
WITH data(v) AS (
|
|
SELECT value FROM generate_series(1,35,3)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,30,4)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(20,50,5)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(30,60,6)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(1,50,7)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,80,8)
|
|
)
|
|
SELECT v FROM data ORDER BY v;
|
|
} {1 1 4 7 8 10 10 10 13 14 15 16 18 18 19 20 22 22 22 25 25 26 26 28 29 30 30 30 31 34 34 35 36 36 40 42 42 43 45 48 50 50 50 54 58 60 66 74}
|
|
do_eqp_test 111 {
|
|
WITH data(v) AS (
|
|
SELECT value FROM generate_series(1,35,3)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,30,4)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(20,50,5)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(30,60,6)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(1,50,7)
|
|
UNION ALL
|
|
SELECT value FROM generate_series(10,80,8)
|
|
)
|
|
SELECT v FROM data ORDER BY v;
|
|
} {
|
|
QUERY PLAN
|
|
`--MERGE (UNION ALL)
|
|
|--LEFT
|
|
| `--MERGE (UNION ALL)
|
|
| |--LEFT
|
|
| | `--MERGE (UNION ALL)
|
|
| | |--LEFT
|
|
| | | `--MERGE (UNION ALL)
|
|
| | | |--LEFT
|
|
| | | | `--MERGE (UNION ALL)
|
|
| | | | |--LEFT
|
|
| | | | | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| | | | `--RIGHT
|
|
| | | | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| | | `--RIGHT
|
|
| | | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| | `--RIGHT
|
|
| | `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
| `--RIGHT
|
|
| `--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
`--RIGHT
|
|
`--SCAN generate_series VIRTUAL TABLE INDEX 23:
|
|
}
|
|
|
|
finish_test
|