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Comment:New test cases for PRAGMA index_xinfo on a WITHOUT ROWID table. And new testcases using index_xinfo to verify that WITHOUT ROWID tables are constructed correctly.
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SHA3-256: 340378c1e60da80263523776f4b6366a9d332a7ee25986637e8b157f4e8e4bd3
User & Date: drh 2019-07-17 12:42:15
Context
2019-07-17
12:49
Fix the WITHOUT ROWID table logic so that it generates a correct KeyInfo object for tables that have a PRIMARY KEY containing the same column used more than once with different collating sequences. Enhance the index_xinfo pragma to assist in testing the above. Fix for ticket [fd3aec0c7e3e2998]. (check-in: 84a51a75 user: drh tags: trunk)
12:42
New test cases for PRAGMA index_xinfo on a WITHOUT ROWID table. And new testcases using index_xinfo to verify that WITHOUT ROWID tables are constructed correctly. (Closed-Leaf check-in: 340378c1 user: drh tags: wor-pk-dups)
11:01
Enhance the "PRAGMA index_info()" and "PRAGMA index_xinfo()" statements so that they allow a WITHOUT ROWID table as their argument, and in that case show the structure of the underlying index used to implement the WITHOUT ROWID table. (check-in: 62274ff6 user: drh tags: wor-pk-dups)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to test/vtab1.test. 

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  }
} {31429}
do_test vtab1.7-13 {
  execsql {
    SELECT rowid, a, b, c FROM real_abc
  }
} {}









ifcapable attach {
  do_test vtab1.8-1 {
    set echo_module ""
    execsql {
      ATTACH 'test2.db' AS aux;
      CREATE VIRTUAL TABLE aux.e2 USING echo(real_abc);








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  }
} {31429}
do_test vtab1.7-13 {
  execsql {
    SELECT rowid, a, b, c FROM real_abc
  }
} {}

# PRAGMA index_info and index_xinfo are no-ops on a virtual table
do_test vtab1.7-14 {
  execsql {
    PRAGMA index_info('echo_abc');
    PRAGMA index_xinfo('echo_abc');
  }
} {}

ifcapable attach {
  do_test vtab1.8-1 {
    set echo_module ""
    execsql {
      ATTACH 'test2.db' AS aux;
      CREATE VIRTUAL TABLE aux.e2 USING echo(real_abc);

Changes to test/without_rowid1.test. 

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  INSERT INTO t1 VALUES('dynamic','juliet','flipper','command');
  INSERT INTO t1 VALUES('journal','sherman','gamma','patriot');
  INSERT INTO t1 VALUES('arctic','sleep','ammonia','helena');
  SELECT *, '|' FROM t1 ORDER BY c, a;
} {arctic sleep ammonia helena | journal sherman ammonia helena | dynamic juliet flipper command | journal sherman gamma patriot |}

integrity_check without_rowid1-1.0ic





do_execsql_test without_rowid1-1.1 {
  SELECT *, '|' FROM t1 ORDER BY +c, a;
} {arctic sleep ammonia helena | journal sherman ammonia helena | dynamic juliet flipper command | journal sherman gamma patriot |}

do_execsql_test without_rowid1-1.2 {
  SELECT *, '|' FROM t1 ORDER BY c DESC, a DESC;
................................................................................
  INSERT INTO t4 VALUES('abc', 'def');
  SELECT * FROM t4;
} {abc def}
do_execsql_test 2.1.2 {
  UPDATE t4 SET a = 'ABC';
  SELECT * FROM t4;
} {ABC def}




do_execsql_test 2.2.1 {
  DROP TABLE t4;
  CREATE TABLE t4 (b, a COLLATE nocase PRIMARY KEY) WITHOUT ROWID;
  INSERT INTO t4(a, b) VALUES('abc', 'def');
  SELECT * FROM t4;
} {def abc}

do_execsql_test 2.2.2 {
  UPDATE t4 SET a = 'ABC', b = 'xyz';
  SELECT * FROM t4;
} {xyz ABC}






do_execsql_test 2.3.1 {
  CREATE TABLE t5 (a, b, PRIMARY KEY(b, a)) WITHOUT ROWID;
  INSERT INTO t5(a, b) VALUES('abc', 'def');
  UPDATE t5 SET a='abc', b='def';
} {}






do_execsql_test 2.4.1 {
  CREATE TABLE t6 (
    a COLLATE nocase, b, c UNIQUE, PRIMARY KEY(b, a)
  ) WITHOUT ROWID;

  INSERT INTO t6(a, b, c) VALUES('abc', 'def', 'ghi');
................................................................................
  UPDATE t6 SET a='ABC', c='ghi';
} {}

do_execsql_test 2.4.2 {
  SELECT * FROM t6 ORDER BY b, a;
  SELECT * FROM t6 ORDER BY c;
} {ABC def ghi ABC def ghi}






#-------------------------------------------------------------------------
# Unless the destination table is completely empty, the xfer optimization 
# is disabled for WITHOUT ROWID tables. The following tests check for
# some problems that might occur if this were not the case.
#
reset_db








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  INSERT INTO t1 VALUES('dynamic','juliet','flipper','command');
  INSERT INTO t1 VALUES('journal','sherman','gamma','patriot');
  INSERT INTO t1 VALUES('arctic','sleep','ammonia','helena');
  SELECT *, '|' FROM t1 ORDER BY c, a;
} {arctic sleep ammonia helena | journal sherman ammonia helena | dynamic juliet flipper command | journal sherman gamma patriot |}

integrity_check without_rowid1-1.0ic

do_execsql_test without_rowid1-1.0ixi {
  SELECT name, key FROM pragma_index_xinfo('t1');
} {c 1 a 1 b 0 d 0}

do_execsql_test without_rowid1-1.1 {
  SELECT *, '|' FROM t1 ORDER BY +c, a;
} {arctic sleep ammonia helena | journal sherman ammonia helena | dynamic juliet flipper command | journal sherman gamma patriot |}

do_execsql_test without_rowid1-1.2 {
  SELECT *, '|' FROM t1 ORDER BY c DESC, a DESC;
................................................................................
  INSERT INTO t4 VALUES('abc', 'def');
  SELECT * FROM t4;
} {abc def}
do_execsql_test 2.1.2 {
  UPDATE t4 SET a = 'ABC';
  SELECT * FROM t4;
} {ABC def}
do_execsql_test 2.1.3 {
  SELECT name, coll, key FROM pragma_index_xinfo('t4');
} {a nocase 1 b BINARY 0}

do_execsql_test 2.2.1 {
  DROP TABLE t4;
  CREATE TABLE t4 (b, a COLLATE nocase PRIMARY KEY) WITHOUT ROWID;
  INSERT INTO t4(a, b) VALUES('abc', 'def');
  SELECT * FROM t4;
} {def abc}

do_execsql_test 2.2.2 {
  UPDATE t4 SET a = 'ABC', b = 'xyz';
  SELECT * FROM t4;
} {xyz ABC}

do_execsql_test 2.2.3 {
  SELECT name, coll, key FROM pragma_index_xinfo('t4');
} {a nocase 1 b BINARY 0}


do_execsql_test 2.3.1 {
  CREATE TABLE t5 (a, b, PRIMARY KEY(b, a)) WITHOUT ROWID;
  INSERT INTO t5(a, b) VALUES('abc', 'def');
  UPDATE t5 SET a='abc', b='def';
} {}

do_execsql_test 2.3.2 {
  SELECT name, coll, key FROM pragma_index_xinfo('t5');
} {b BINARY 1 a BINARY 1}


do_execsql_test 2.4.1 {
  CREATE TABLE t6 (
    a COLLATE nocase, b, c UNIQUE, PRIMARY KEY(b, a)
  ) WITHOUT ROWID;

  INSERT INTO t6(a, b, c) VALUES('abc', 'def', 'ghi');
................................................................................
  UPDATE t6 SET a='ABC', c='ghi';
} {}

do_execsql_test 2.4.2 {
  SELECT * FROM t6 ORDER BY b, a;
  SELECT * FROM t6 ORDER BY c;
} {ABC def ghi ABC def ghi}

do_execsql_test 2.4.3 {
  SELECT name, coll, key FROM pragma_index_xinfo('t6');
} {b BINARY 1 a nocase 1 c BINARY 0}


#-------------------------------------------------------------------------
# Unless the destination table is completely empty, the xfer optimization 
# is disabled for WITHOUT ROWID tables. The following tests check for
# some problems that might occur if this were not the case.
#
reset_db

Changes to test/without_rowid6.test. 

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  CREATE TABLE t1(a,b,c,d,e, PRIMARY KEY(a,b,c,a,b,c,d,a,b,c)) WITHOUT ROWID;
  CREATE INDEX t1a ON t1(b, b);
  WITH RECURSIVE
    c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<1000)
  INSERT INTO t1(a,b,c,d,e) SELECT i, i+1000, printf('x%dy',i), 0, 0 FROM c;
  ANALYZE;
} {}



do_execsql_test without_rowid6-110 {
  SELECT c FROM t1 WHERE a=123;
} {x123y}
do_execsql_test without_rowid6-120 {
  SELECT c FROM t1 WHERE b=1123;
} {x123y}
do_execsql_test without_rowid6-130 {
................................................................................
    b UNIQUE,
    c UNIQUE,
    PRIMARY KEY(b)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}



do_execsql_test without_rowid6-210 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-220 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_2 1 pk/}
................................................................................
  CREATE TABLE t1(a,b,c,
    UNIQUE(b,c),
    PRIMARY KEY(b,c)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}



do_execsql_test without_rowid6-510 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-520 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_1 1 pk/}








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  CREATE TABLE t1(a,b,c,d,e, PRIMARY KEY(a,b,c,a,b,c,d,a,b,c)) WITHOUT ROWID;
  CREATE INDEX t1a ON t1(b, b);
  WITH RECURSIVE
    c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<1000)
  INSERT INTO t1(a,b,c,d,e) SELECT i, i+1000, printf('x%dy',i), 0, 0 FROM c;
  ANALYZE;
} {}
do_execsql_test without_rowid6-101 {
  SELECT name, key FROM pragma_index_xinfo('t1');
} {a 1 b 1 c 1 d 1 e 0}
do_execsql_test without_rowid6-110 {
  SELECT c FROM t1 WHERE a=123;
} {x123y}
do_execsql_test without_rowid6-120 {
  SELECT c FROM t1 WHERE b=1123;
} {x123y}
do_execsql_test without_rowid6-130 {
................................................................................
    b UNIQUE,
    c UNIQUE,
    PRIMARY KEY(b)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-201 {
  SELECT name, key FROM pragma_index_xinfo('t1');
} {b 1 a 0 c 0}
do_execsql_test without_rowid6-210 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-220 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_2 1 pk/}
................................................................................
  CREATE TABLE t1(a,b,c,
    UNIQUE(b,c),
    PRIMARY KEY(b,c)
  ) WITHOUT ROWID;
  INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {4 1}
do_execsql_test without_rowid6-501 {
  SELECT name, key FROM pragma_index_xinfo('t1');
} {b 1 c 1 a 0}
do_execsql_test without_rowid6-510 {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b>3 ORDER BY b;
} {/SEARCH TABLE t1 USING PRIMARY KEY .b>../}
do_execsql_test without_rowid6-520 {
  PRAGMA index_list(t1);
} {/sqlite_autoindex_t1_1 1 pk/}

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