f43ffb30b0
EXPLAIN QUERY PLAN output. FossilOrigin-Name: d7b2ac1c1a31fa4285cf6df0995db7e7705bb6a1bc94850c14c94cc4e3eb239a
378 lines
10 KiB
Plaintext
378 lines
10 KiB
Plaintext
# 2021-02-22
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is the MATERIALIZED hint to common table expressions
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set ::testprefix with6
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ifcapable {!cte} {
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finish_test
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return
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}
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do_execsql_test 100 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 101 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {
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QUERY PLAN
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|--MATERIALIZE c
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| `--SCAN 2 CONSTANT ROWS
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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do_execsql_test 110 {
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WITH c(x) AS MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 111 {
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WITH c(x) AS MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {
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QUERY PLAN
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|--MATERIALIZE c
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| `--SCAN 2 CONSTANT ROWS
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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# Even though the CTE is not materialized, the self-join optimization
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# kicks in and does the materialization for us.
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#
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do_execsql_test 120 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 121 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x FROM c c1, c c2, c c3;
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} {
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QUERY PLAN
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|--MATERIALIZE c
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| `--SCAN 2 CONSTANT ROWS
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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do_execsql_test 130 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 5) AS c2,
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(SELECT x FROM c LIMIT 5) AS c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 131 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 5) AS c2,
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(SELECT x FROM c LIMIT 5) AS c3;
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} {
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QUERY PLAN
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|--CO-ROUTINE c1
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| |--CO-ROUTINE c
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| | `--SCAN 2 CONSTANT ROWS
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| `--SCAN c
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|--MATERIALIZE c2
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| |--CO-ROUTINE c
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| | `--SCAN 2 CONSTANT ROWS
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| `--SCAN c
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|--MATERIALIZE c3
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| |--CO-ROUTINE c
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| | `--SCAN 2 CONSTANT ROWS
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| `--SCAN c
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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# The (SELECT x FROM c LIMIT N) subqueries get materialized once each.
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# Show multiple materializations are shown. But there is only one
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# materialization for c, shown by the "SCAN 2 CONSTANT ROWS" line.
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#
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do_execsql_test 140 {
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WITH c(x) AS MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 6) AS c2,
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(SELECT x FROM c LIMIT 7) AS c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 141 {
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WITH c(x) AS MATERIALIZED (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 6) AS c2,
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(SELECT x FROM c LIMIT 7) AS c3;
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} {
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QUERY PLAN
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|--CO-ROUTINE c1
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| |--MATERIALIZE c
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| | `--SCAN 2 CONSTANT ROWS
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| `--SCAN c
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|--MATERIALIZE c2
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| `--SCAN c
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|--MATERIALIZE c3
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| `--SCAN c
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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do_execsql_test 150 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 6) AS c2,
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(SELECT x FROM c LIMIT 7) AS c3;
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} {000 001 010 011 100 101 110 111}
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do_eqp_test 151 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c1.x||c2.x||c3.x
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FROM (SELECT x FROM c LIMIT 5) AS c1,
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(SELECT x FROM c LIMIT 6) AS c2,
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(SELECT x FROM c LIMIT 7) AS c3;
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} {
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QUERY PLAN
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|--CO-ROUTINE c1
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| |--MATERIALIZE c
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| | `--SCAN 2 CONSTANT ROWS
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| `--SCAN c
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|--MATERIALIZE c2
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| `--SCAN c
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|--MATERIALIZE c3
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| `--SCAN c
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|--SCAN c1
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|--SCAN c2
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`--SCAN c3
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}
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do_execsql_test 160 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c2.x + 100*(SELECT sum(x+1) FROM c WHERE c.x<=c2.x)
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FROM c AS c2 WHERE c2.x<10;
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} {100 301}
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do_eqp_test 161 {
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WITH c(x) AS (VALUES(0),(1))
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SELECT c2.x + 100*(SELECT sum(x+1) FROM c WHERE c.x<=c2.x)
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FROM c AS c2 WHERE c2.x<10;
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} {
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QUERY PLAN
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|--MATERIALIZE c
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| `--SCAN 2 CONSTANT ROWS
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|--SCAN c2
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`--CORRELATED SCALAR SUBQUERY xxxxxx
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`--SCAN c
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}
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do_execsql_test 170 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c2.x + 100*(SELECT sum(x+1) FROM c WHERE c.x<=c2.x)
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FROM c AS c2 WHERE c2.x<10;
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} {100 301}
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do_eqp_test 171 {
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WITH c(x) AS NOT MATERIALIZED (VALUES(0),(1))
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SELECT c2.x + 100*(SELECT sum(x+1) FROM c WHERE c.x<=c2.x)
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FROM c AS c2 WHERE c2.x<10;
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} {
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QUERY PLAN
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|--CO-ROUTINE c
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| `--SCAN 2 CONSTANT ROWS
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|--SCAN c2
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`--CORRELATED SCALAR SUBQUERY xxxxxx
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|--CO-ROUTINE c
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| `--SCAN 2 CONSTANT ROWS
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`--SCAN c
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}
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do_execsql_test 200 {
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CREATE TABLE t1(x);
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INSERT INTO t1(x) VALUES(4);
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CREATE VIEW t2(y) AS
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WITH c(z) AS (VALUES(4),(5),(6))
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SELECT c1.z+c2.z*100+t1.x*10000
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FROM t1,
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(SELECT z FROM c LIMIT 5) AS c1,
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(SELECT z FROM c LIMIT 5) AS c2;
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SELECT y FROM t2 ORDER BY y;
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} {40404 40405 40406 40504 40505 40506 40604 40605 40606}
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do_execsql_test 210 {
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DROP VIEW t2;
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CREATE VIEW t2(y) AS
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WITH c(z) AS NOT MATERIALIZED (VALUES(4),(5),(6))
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SELECT c1.z+c2.z*100+t1.x*10000
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FROM t1,
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(SELECT z FROM c LIMIT 5) AS c1,
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(SELECT z FROM c LIMIT 5) AS c2;
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SELECT y FROM t2 ORDER BY y;
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} {40404 40405 40406 40504 40505 40506 40604 40605 40606}
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do_eqp_test 211 {
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SELECT y FROM t2 ORDER BY y;
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} {
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QUERY PLAN
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|--CO-ROUTINE c1
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| |--CO-ROUTINE c
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| | `--SCAN 3 CONSTANT ROWS
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| `--SCAN c
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|--MATERIALIZE c2
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| |--CO-ROUTINE c
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| | `--SCAN 3 CONSTANT ROWS
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| `--SCAN c
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|--SCAN c1
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|--SCAN c2
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|--SCAN t1
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`--USE TEMP B-TREE FOR ORDER BY
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}
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do_execsql_test 220 {
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DROP VIEW t2;
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CREATE VIEW t2(y) AS
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WITH c(z) AS MATERIALIZED (VALUES(4),(5),(6))
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SELECT c1.z+c2.z*100+t1.x*10000
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FROM t1,
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(SELECT z FROM c LIMIT 5) AS c1,
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(SELECT z FROM c LIMIT 5) AS c2;
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SELECT y FROM t2 ORDER BY y;
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} {40404 40405 40406 40504 40505 40506 40604 40605 40606}
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# 2022-04-22: Do not allow flattening of a MATERIALIZED CTE into
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# an outer query.
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#
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reset_db
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db null -
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do_execsql_test 300 {
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CREATE TABLE t2(a INT,b INT,d INT); INSERT INTO t2 VALUES(4,5,6),(7,8,9);
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CREATE TABLE t3(a INT,b INT,e INT); INSERT INTO t3 VALUES(3,3,3),(8,8,8);
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} {}
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do_execsql_test 310 {
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WITH t23 AS MATERIALIZED (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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4 5 6 - -
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7 8 9 8 8
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- 3 - 3 3
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}
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do_eqp_test 311 {
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WITH t23 AS MATERIALIZED (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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QUERY PLAN
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|--MATERIALIZE t23
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| |--SCAN t2
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| |--SCAN t3 LEFT-JOIN
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| `--RIGHT-JOIN t3
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| `--SCAN t3
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`--SCAN t23
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}
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do_execsql_test 320 {
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WITH t23 AS NOT MATERIALIZED (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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4 5 6 - -
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7 8 9 8 8
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- 3 - 3 3
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}
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do_eqp_test 321 {
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WITH t23 AS NOT MATERIALIZED (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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QUERY PLAN
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|--SCAN t2
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|--SCAN t3 LEFT-JOIN
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`--RIGHT-JOIN t3
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`--SCAN t3
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}
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do_execsql_test 330 {
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WITH t23 AS (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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4 5 6 - -
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7 8 9 8 8
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- 3 - 3 3
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}
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do_eqp_test 331 {
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WITH t23 AS (SELECT * FROM t2 FULL JOIN t3 USING(b))
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SELECT * FROM t23;
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} {
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QUERY PLAN
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|--SCAN t2
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|--SCAN t3 LEFT-JOIN
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`--RIGHT-JOIN t3
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`--SCAN t3
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}
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# 2023-02-01
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# https://sqlite.org/forum/forumpost/1d571c02963355ed
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#
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# Just because a CTE is used more than once, does not mean it should be
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# marked with M10d_Yes and hence prohibited from participating in the
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# query flattening optimization.
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#
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reset_db
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db eval {
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CREATE TABLE raw(country,date,total,delta, UNIQUE(country,date));
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}
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do_eqp_test 400 {
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with recursive
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init(country, date, fin) AS (SELECT country, min(date), max(date) FROM raw WHERE total > 0 GROUP BY country),
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src(country, date) AS (SELECT raw.country, raw.date
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FROM raw JOIN init i on raw.country = i.country AND raw.date > i.date
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ORDER BY raw.country, raw.date),
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vals(country, date, x, y) AS (SELECT src.country, src.date, julianday(raw.date) - julianday(src.date), log(delta+1)
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FROM src JOIN raw on raw.country = src.country AND raw.date > date(src.date,'-7 days') AND raw.date <= src.date AND delta >= 0),
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sums(country, date, x2, x, n, xy, y) AS (SELECT country, date, sum(x*x*1.0), sum(x*1.0), sum(1.0), sum(x*y*1.0), sum(y*1.0) FROM vals GROUP BY 1, 2),
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mult(country, date, m) AS (SELECT country, date, 1.0/(x2 * n - x * x) FROM sums),
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inv(country, date, a,b,c,d) AS (SELECT mult.country, mult.date, n * m, -x * m, -x * m, x2 * m
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FROM mult JOIN sums on sums.country=mult.country AND mult.date=sums.date),
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fit(country, date, a, b) AS (SELECT inv.country, inv.date, a * xy + b * y, c * xy + d * y
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FROM inv
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JOIN mult on mult.country = inv.country AND mult.date = inv.date
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JOIN sums on sums.country = mult.country AND sums.date = mult.date
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)
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SELECT *, nFin/nPrev - 1 AS growth, log(2)/log(nFin/nPrev) AS doubling
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FROM (SELECT f.*, exp(b) - 1 AS nFin, exp(a* (-1) + b) - 1 AS nPrev
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FROM fit f JOIN init i on i.country = f.country AND f.date <= date(i.fin,'-3 days'))
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WHERE nPrev > 0 AND nFin > 0;
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} {
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QUERY PLAN
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|--MATERIALIZE sums
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| |--MATERIALIZE src
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| | |--MATERIALIZE init
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| | | `--SCAN raw USING INDEX sqlite_autoindex_raw_1
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| | |--SCAN i
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| | |--SEARCH raw USING COVERING INDEX sqlite_autoindex_raw_1 (country=? AND date>?)
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| | `--USE TEMP B-TREE FOR ORDER BY
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| |--SCAN src
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| |--SEARCH raw USING INDEX sqlite_autoindex_raw_1 (country=? AND date>? AND date<?)
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| `--USE TEMP B-TREE FOR GROUP BY
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|--SCAN sums
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|--BLOOM FILTER ON sums (country=? AND date=?)
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|--SEARCH sums USING AUTOMATIC COVERING INDEX (country=? AND date=?)
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|--BLOOM FILTER ON sums (country=? AND date=?)
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|--SEARCH sums USING AUTOMATIC COVERING INDEX (country=? AND date=?)
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|--BLOOM FILTER ON sums (country=? AND date=?)
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|--SEARCH sums USING AUTOMATIC COVERING INDEX (country=? AND date=?)
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|--BLOOM FILTER ON i (country=?)
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`--SEARCH i USING AUTOMATIC COVERING INDEX (country=?)
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}
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finish_test
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