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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 1d8c1134e1488a35c6fa205b2f52e72fc220972d946c59492d10bba01d6fecd4:


# 2014-10-24
#
# 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.
#
#*************************************************************************
#
# This file implements regression tests for SQLite library.  The
# focus of this script is testing automatic index creation logic,
# and specifically ensuring that automatic indexes can be used with
# co-routine subqueries.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix autoindex5

# Schema is from the Debian security database
#
do_execsql_test autoindex5-1.0 {
  CREATE TABLE source_package_status
          (bug_name TEXT NOT NULL,
           package INTEGER NOT NULL,
           vulnerable INTEGER NOT NULL,
           urgency TEXT NOT NULL,
           PRIMARY KEY (bug_name, package));
  CREATE INDEX source_package_status_package
              ON source_package_status(package);
  
  CREATE TABLE source_packages
              (name TEXT NOT NULL,
              release TEXT NOT NULL,
              subrelease TEXT NOT NULL,
              archive TEXT NOT NULL,
              version TEXT NOT NULL,
              version_id INTEGER NOT NULL DEFAULT 0,
              PRIMARY KEY (name, release, subrelease, archive));
  
  CREATE TABLE bugs
          (name TEXT NOT NULL PRIMARY KEY,
           cve_status TEXT NOT NULL
               CHECK (cve_status IN
                      ('', 'CANDIDATE', 'ASSIGNED', 'RESERVED', 'REJECTED')),
           not_for_us INTEGER NOT NULL CHECK (not_for_us IN (0, 1)),
           description TEXT NOT NULL,
           release_date TEXT NOT NULL,
           source_file TEXT NOT NULL,
           source_line INTEGER NOT NULL);
  
  CREATE TABLE package_notes
          (id INTEGER NOT NULL PRIMARY KEY,
           bug_name TEXT NOT NULL,
           package TEXT NOT NULL,
           fixed_version TEXT
               CHECK (fixed_version IS NULL OR fixed_version <> ''),
           fixed_version_id INTEGER NOT NULL DEFAULT 0,
           release TEXT NOT NULL,
           package_kind TEXT NOT NULL DEFAULT 'unknown',
           urgency TEXT NOT NULL,
           bug_origin TEXT NOT NULL DEFAULT '');
  CREATE INDEX package_notes_package
              ON package_notes(package);
  CREATE UNIQUE INDEX package_notes_bug
              ON package_notes(bug_name, package, release);
  
  CREATE TABLE debian_bugs
          (bug INTEGER NOT NULL,
           note INTEGER NOT NULL,
           PRIMARY KEY (bug, note));
  
  
  CREATE VIEW debian_cve AS
              SELECT DISTINCT debian_bugs.bug, st.bug_name
              FROM package_notes, debian_bugs, source_package_status AS st
              WHERE package_notes.bug_name = st.bug_name
              AND debian_bugs.note = package_notes.id
              ORDER BY debian_bugs.bug;
} {}

# The following query should use an automatic index for the view
# in FROM clause of the subquery of the second result column.
#
do_eqp_test autoindex5-1.1 {
  SELECT
    st.bug_name,
    (SELECT ALL debian_cve.bug FROM debian_cve
      WHERE debian_cve.bug_name = st.bug_name
      ORDER BY debian_cve.bug),
    sp.release
  FROM
     source_package_status AS st,
     source_packages AS sp,
     bugs
  WHERE
     sp.rowid = st.package
     AND st.bug_name = bugs.name
     AND ( st.bug_name LIKE 'CVE-%' OR st.bug_name LIKE 'TEMP-%' )
     AND ( sp.release = 'sid' OR sp.release = 'stretch' OR sp.release = 'jessie'
            OR sp.release = 'wheezy' OR sp.release = 'squeeze' )
  ORDER BY sp.name, st.bug_name, sp.release, sp.subrelease;
} {SEARCH SUBQUERY * USING AUTOMATIC COVERING INDEX (bug_name=?)}

#-------------------------------------------------------------------------
# Test that ticket [8a2adec1] has been fixed.
#
do_execsql_test 2.1 {
  CREATE TABLE one(o);
  INSERT INTO one DEFAULT VALUES;

  CREATE TABLE t1(x, z);
  INSERT INTO t1 VALUES('aaa', 4.0);
  INSERT INTO t1 VALUES('aaa', 4.0);
  CREATE VIEW vvv AS
    SELECT * FROM t1
    UNION ALL
    SELECT 0, 0 WHERE 0;

  SELECT (
      SELECT sum(z) FROM vvv WHERE x='aaa'
  ) FROM one;
} {8.0}

# Ticket https://www.sqlite.org/src/info/787fa716be3a7f65
# Segfault due to multiple uses of the same subquery where the
# subquery is implemented via coroutine.
#
ifcapable windowfunc {
sqlite3 db :memory:
do_execsql_test 3.0 {
  -- This is the original test case reported on the mailing list
  CREATE TABLE artists (
    id integer NOT NULL PRIMARY KEY AUTOINCREMENT,
    name varchar(255)
  );
  CREATE TABLE albums (
    id integer NOT NULL PRIMARY KEY AUTOINCREMENT,
    name varchar(255),
    artist_id integer REFERENCES artists
  );
  INSERT INTO artists (name) VALUES ('Ar');
  INSERT INTO albums (name, artist_id) VALUES ('Al', 1);
  SELECT artists.*
  FROM artists
  INNER JOIN artists AS 'b' ON (b.id = artists.id)
  WHERE (artists.id IN (
    SELECT albums.artist_id
    FROM albums
    WHERE ((name = 'Al')
      AND (albums.artist_id IS NOT NULL)
      AND (albums.id IN (
        SELECT id
        FROM (
          SELECT albums.id,
                 row_number() OVER (
                   PARTITION BY albums.artist_id
                   ORDER BY name
                 ) AS 'x'
          FROM albums
          WHERE (name = 'Al')
        ) AS 't1'
        WHERE (x = 1)
      ))
      AND (albums.id IN (1, 2)))
  ));
} {1 Ar}
} ;# windowfunc

# The remaining test cases were discovered (by Dan) during trouble-shooting
sqlite3 db :memory:
do_execsql_test 3.1 {
  CREATE TABLE t1 (a); INSERT INTO t1 (a) VALUES (104);
  CREATE TABLE t2 (b); INSERT INTO t2 (b) VALUES (104);
  CREATE TABLE t3 (c); INSERT INTO t3 (c) VALUES (104);
  CREATE TABLE t4 (d); INSERT INTO t4 (d) VALUES (104);
  SELECT *
  FROM t1 CROSS JOIN t2 ON (t1.a = t2.b) WHERE t2.b IN (
    SELECT t3.c
    FROM t3
    WHERE t3.c IN (
      SELECT d FROM (SELECT DISTINCT d FROM t4) AS x WHERE x.d=104
    )
  );
} {104 104}
sqlite3 db :memory:
do_execsql_test 3.2 {
  CREATE TABLE t5(a, b, c, d);
  CREATE INDEX t5a ON t5(a);
  CREATE INDEX t5b ON t5(b);
  CREATE TABLE t6(e);
  INSERT INTO t6 VALUES(1);
  INSERT INTO t5 VALUES(1,1,1,1), (2,2,2,2);
  SELECT * FROM t5 WHERE (a=1 OR b=2) AND c IN (
    SELECT e FROM (SELECT DISTINCT e FROM t6) WHERE e=1
  );
} {1 1 1 1}
sqlite3 db :memory:
do_execsql_test 3.3 {
  CREATE TABLE t1(a1, a2, a3);
  CREATE INDEX t1a2 ON t1(a2, a1);
  CREATE INDEX t1a3 ON t1(a3, a1);
  CREATE TABLE t2(d);
  INSERT INTO t1 VALUES(3, 1, 1), (3, 2, 2);
  INSERT INTO t2 VALUES(3);
  SELECT *, 'x' FROM t1 WHERE (a2=1 OR a3=2) AND a1 = (
    SELECT d FROM (SELECT DISTINCT d FROM t2) WHERE d=3
  );
} {3 1 1 x 3 2 2 x}


    

finish_test