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Overview
Comment:Fix a compiler warning when STAT2 is off. More test cases. Fix legacy tests to deal with the new STAT2 logic.
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Timelines: family | ancestors | descendants | both | query-planner-tweaks
Files: files | file ages | folders
SHA1: 7e914aa999d9f3f7be58a4494d33a7876af56603
User & Date: drh 2011-08-06 01:22:50
Context
2011-08-06
02:03
Merge together the fork in the query-planner-tweaks branch. check-in: 2daab6bd user: drh tags: query-planner-tweaks
01:22
Fix a compiler warning when STAT2 is off. More test cases. Fix legacy tests to deal with the new STAT2 logic. check-in: 7e914aa9 user: drh tags: query-planner-tweaks
2011-08-05
22:31
Bug fixes to the sample-count logic for STAT2. A few test cases added. check-in: e93c248c user: drh tags: query-planner-tweaks
Changes
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Changes to src/analyze.c.

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  int regNext = iMem++;        /* Index of next sample to record */
  int regSampleIdx = iMem++;   /* Index of next sample */
  int regReady = iMem++;       /* True if ready to store a stat2 entry */
  int regGosub = iMem++;       /* Register holding subroutine return addr */
  int regSample2 = iMem++;     /* Number of samples to acquire times 2 */
  int regCount = iMem++;       /* Number of rows in the table */
  int regCount2 = iMem++;      /* regCount*2 */

#endif
  int regCol = iMem++;         /* Content of a column in analyzed table */
  int regRec = iMem++;         /* Register holding completed record */
  int regTemp = iMem++;        /* Temporary use register */
  int regRowid = iMem++;       /* Rowid for the inserted record */
  int once = 1;                /* One-time initialization */


  v = sqlite3GetVdbe(pParse);
  if( v==0 || NEVER(pTab==0) ){
    return;
  }
  if( pTab->tnum==0 ){







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  int regNext = iMem++;        /* Index of next sample to record */
  int regSampleIdx = iMem++;   /* Index of next sample */
  int regReady = iMem++;       /* True if ready to store a stat2 entry */
  int regGosub = iMem++;       /* Register holding subroutine return addr */
  int regSample2 = iMem++;     /* Number of samples to acquire times 2 */
  int regCount = iMem++;       /* Number of rows in the table */
  int regCount2 = iMem++;      /* regCount*2 */
  int once = 1;                /* One-time initialization */
#endif
  int regCol = iMem++;         /* Content of a column in analyzed table */
  int regRec = iMem++;         /* Register holding completed record */
  int regTemp = iMem++;        /* Temporary use register */
  int regRowid = iMem++;       /* Rowid for the inserted record */



  v = sqlite3GetVdbe(pParse);
  if( v==0 || NEVER(pTab==0) ){
    return;
  }
  if( pTab->tnum==0 ){

Changes to test/analyze2.test.

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  for {set i 0} {$i < 1000} {incr i} {
    execsql { INSERT INTO t1 VALUES($i) }
  }
  execsql { 
    ANALYZE;
    SELECT tbl, idx, sampleno, sample FROM sqlite_stat2;
  }
} [list t1 sqlite_autoindex_t1_1 0 49  \
        t1 sqlite_autoindex_t1_1 1 149 \
        t1 sqlite_autoindex_t1_1 2 249 \
        t1 sqlite_autoindex_t1_1 3 349 \
        t1 sqlite_autoindex_t1_1 4 449 \
        t1 sqlite_autoindex_t1_1 5 549 \
        t1 sqlite_autoindex_t1_1 6 649 \
        t1 sqlite_autoindex_t1_1 7 749 \
        t1 sqlite_autoindex_t1_1 8 849 \
        t1 sqlite_autoindex_t1_1 9 949 \
]

do_test analyze2-1.2 {
  execsql {
    DELETE FROM t1 WHERE x>9;
    ANALYZE;
    SELECT tbl, idx, group_concat(sample, ' ') FROM sqlite_stat2;
  }
} {t1 sqlite_autoindex_t1_1 {0 1 2 3 4 5 6 7 8 9}}
do_test analyze2-1.3 {
  execsql {
    DELETE FROM t1 WHERE x>8;
    ANALYZE;
    SELECT * FROM sqlite_stat2;
  }
} {}
................................................................................
  execsql ANALYZE
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x {99 299 499 699 899 ajj cjj ejj gjj ijj}}
do_test analyze2-3.2 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_y' 
    GROUP BY tbl,idx
  }
} {t1 t1_y {99 299 499 699 899 ajj cjj ejj gjj ijj}}

do_eqp_test 3.3 {
  SELECT * FROM t1 WHERE x BETWEEN 100 AND 500 AND y BETWEEN 'a' AND 'b'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>? AND y<?) (~50 rows)}
}
do_eqp_test 3.4 {
  SELECT * FROM t1 WHERE x BETWEEN 100 AND 400 AND y BETWEEN 'a' AND 'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_x (x>? AND x<?) (~100 rows)}
}
do_eqp_test 3.5 {
  SELECT * FROM t1 WHERE x<'a' AND y>'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>?) (~66 rows)}
}
do_eqp_test 3.6 {
  SELECT * FROM t1 WHERE x<444 AND y>'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>?) (~66 rows)}
}
do_eqp_test 3.7 {
  SELECT * FROM t1 WHERE x<221 AND y>'g'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_x (x<?) (~66 rows)}
}

................................................................................
    PRAGMA automatic_index=OFF;
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't3a' 
    GROUP BY tbl,idx;
    PRAGMA automatic_index=ON;
  }
} {t3 t3a {AfA bEj CEj dEj EEj fEj GEj hEj IEj jEj}}
do_test analyze2-4.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't3b' 
    GROUP BY tbl,idx
  }
} {t3 t3b {AbA CIj EIj GIj IIj bIj dIj fIj hIj jIj}}

do_eqp_test 4.4 {
  SELECT * FROM t3 WHERE a > 'A' AND a < 'C' AND b > 'A' AND b < 'C'
} {
  0 0 0 {SEARCH TABLE t3 USING INDEX t3b (b>? AND b<?) (~11 rows)}
}
do_eqp_test 4.5 {
................................................................................
  do_test analyze2-5.2 {
    execsql { 
      SELECT tbl,idx,group_concat(sample,' ') 
      FROM sqlite_stat2 
      WHERE tbl = 't4' 
      GROUP BY tbl,idx
    }
  } {t4 t4x {afa bej cej dej eej fej gej hej iej jej}}
  do_eqp_test 5.3 {
    SELECT * FROM t4 WHERE x>'ccc'
  } {0 0 0 {SEARCH TABLE t4 USING COVERING INDEX t4x (x>?) (~800 rows)}}
  do_eqp_test 5.4 {
    SELECT * FROM t4 AS t41, t4 AS t42 WHERE t41.x>'ccc' AND t42.x>'ggg'
  } {
    0 0 1 {SEARCH TABLE t4 AS t42 USING COVERING INDEX t4x (x>?) (~300 rows)} 







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  for {set i 0} {$i < 1000} {incr i} {
    execsql { INSERT INTO t1 VALUES($i) }
  }
  execsql { 
    ANALYZE;
    SELECT tbl, idx, sampleno, sample FROM sqlite_stat2;
  }
} [list t1 sqlite_autoindex_t1_1 0 50  \
        t1 sqlite_autoindex_t1_1 1 150 \
        t1 sqlite_autoindex_t1_1 2 250 \
        t1 sqlite_autoindex_t1_1 3 350 \
        t1 sqlite_autoindex_t1_1 4 450 \
        t1 sqlite_autoindex_t1_1 5 550 \
        t1 sqlite_autoindex_t1_1 6 650 \
        t1 sqlite_autoindex_t1_1 7 750 \
        t1 sqlite_autoindex_t1_1 8 850 \
        t1 sqlite_autoindex_t1_1 9 950 \
]

do_test analyze2-1.2 {
  execsql {
    DELETE FROM t1 WHERE x>20;
    ANALYZE;
    SELECT tbl, idx, group_concat(sample, ' ') FROM sqlite_stat2;
  }
} {t1 sqlite_autoindex_t1_1 {1 3 5 7 9 11 13 15 17 19}}
do_test analyze2-1.3 {
  execsql {
    DELETE FROM t1 WHERE x>8;
    ANALYZE;
    SELECT * FROM sqlite_stat2;
  }
} {}
................................................................................
  execsql ANALYZE
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x {100 300 500 700 900 baa daa faa haa jaa}}
do_test analyze2-3.2 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_y' 
    GROUP BY tbl,idx
  }
} {t1 t1_y {100 300 500 700 900 baa daa faa haa jaa}}

do_eqp_test 3.3 {
  SELECT * FROM t1 WHERE x BETWEEN 100 AND 500 AND y BETWEEN 'a' AND 'b'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>? AND y<?) (~25 rows)}
}
do_eqp_test 3.4 {
  SELECT * FROM t1 WHERE x BETWEEN 100 AND 400 AND y BETWEEN 'a' AND 'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_x (x>? AND x<?) (~100 rows)}
}
do_eqp_test 3.5 {
  SELECT * FROM t1 WHERE x<'a' AND y>'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>?) (~133 rows)}
}
do_eqp_test 3.6 {
  SELECT * FROM t1 WHERE x<444 AND y>'h'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_y (y>?) (~133 rows)}
}
do_eqp_test 3.7 {
  SELECT * FROM t1 WHERE x<221 AND y>'g'
} {
  0 0 0 {SEARCH TABLE t1 USING INDEX t1_x (x<?) (~66 rows)}
}

................................................................................
    PRAGMA automatic_index=OFF;
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't3a' 
    GROUP BY tbl,idx;
    PRAGMA automatic_index=ON;
  }
} {t3 t3a {AfA bfA CfA dfA EfA ffA GfA hfA IfA jfA}}
do_test analyze2-4.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't3b' 
    GROUP BY tbl,idx
  }
} {t3 t3b {AbA CbA EbA GbA IbA bbA dbA fbA hbA jbA}}

do_eqp_test 4.4 {
  SELECT * FROM t3 WHERE a > 'A' AND a < 'C' AND b > 'A' AND b < 'C'
} {
  0 0 0 {SEARCH TABLE t3 USING INDEX t3b (b>? AND b<?) (~11 rows)}
}
do_eqp_test 4.5 {
................................................................................
  do_test analyze2-5.2 {
    execsql { 
      SELECT tbl,idx,group_concat(sample,' ') 
      FROM sqlite_stat2 
      WHERE tbl = 't4' 
      GROUP BY tbl,idx
    }
  } {t4 t4x {afa bfa cfa dfa efa ffa gfa hfa ifa jfa}}
  do_eqp_test 5.3 {
    SELECT * FROM t4 WHERE x>'ccc'
  } {0 0 0 {SEARCH TABLE t4 USING COVERING INDEX t4x (x>?) (~800 rows)}}
  do_eqp_test 5.4 {
    SELECT * FROM t4 AS t41, t4 AS t42 WHERE t41.x>'ccc' AND t42.x>'ggg'
  } {
    0 0 1 {SEARCH TABLE t4 AS t42 USING COVERING INDEX t4x (x>?) (~300 rows)} 

Changes to test/analyze8.test.

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    execsql {INSERT INTO t1 VALUES(0,999)}
  }
  execsql {
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1x' ORDER BY sampleno;
  }
} {0 200 0 200 0 200 10 1 70 1 130 1 190 1 999 200 999 200 999 200}
















































































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    execsql {INSERT INTO t1 VALUES(0,999)}
  }
  execsql {
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1x' ORDER BY sampleno;
  }
} {0 200 0 200 0 200 10 1 70 1 130 1 190 1 999 200 999 200 999 200}

do_test analyze8-3.0 {
  execsql {
    BEGIN;
    DROP TABLE t1;
    CREATE TABLE t1(a,b);
    CREATE INDEX t1all ON t1(a,b);
    INSERT INTO t1 VALUES(0,1);
    INSERT INTO t1 VALUES(0,2);
    INSERT INTO t1 VALUES(0,3);
    INSERT INTO t1 VALUES(1,4);
    INSERT INTO t1 SELECT a+2, b+4 FROM t1;
    INSERT INTO t1 SELECT a+4, b+8 FROM t1;
    INSERT INTO t1 SELECT a+8, b+16 FROM t1;
    COMMIT;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {0 3 2 3 4 3 5 1 6 3 8 3 10 3 12 3 13 1 14 3}
do_test analyze8-3.1 {
  execsql {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(1,1);
    INSERT INTO t1 VALUES(2,2);
    INSERT INTO t1 SELECT a+2, b+2 FROM t1;
    INSERT INTO t1 SELECT a+4, b+4 FROM t1;
    INSERT INTO t1 SELECT a+8, b+8 FROM t1;
    INSERT INTO t1 SELECT a+16, b+16 FROM t1;
    DELETE FROM t1 WHERE a>21;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {2 1 4 1 6 1 8 1 10 1 12 1 14 1 16 1 18 1 20 1}
do_test analyze8-3.2 {
  execsql {
    UPDATE t1 SET a=123;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {123 21 123 21 123 21 123 21 123 21 123 21 123 21 123 21 123 21 123 21}
do_test analyze8-3.3 {
  execsql {
    DELETE FROM t1 WHERE b=1 OR b=2;
    ANALYZE;
    SELECT count(*) FROM t1;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {19}
do_test analyze8-3.4 {
  execsql {
    UPDATE t1 SET a=b;
    INSERT INTO t1 VALUES(1,1);
    INSERT INTO t1 VALUES(2,2);
    INSERT INTO t1 SELECT a, b FROM t1;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {2 2 4 2 6 2 8 2 10 2 12 2 14 2 16 2 18 2 20 2}
do_test analyze8-3.5 {
  execsql {
    UPDATE t1 SET a=1 WHERE b<20;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {1 38 1 38 1 38 1 38 1 38 1 38 1 38 1 38 1 38 20 2}
do_test analyze8-3.6 {
  execsql {
    UPDATE t1 SET a=b;
    UPDATE t1 SET a=20 WHERE b>2;
    ANALYZE;
    SELECT sample, cnt FROM sqlite_stat2 WHERE idx='t1all' ORDER BY sampleno;
  }
} {2 2 20 38 20 38 20 38 20 38 20 38 20 38 20 38 20 38 20 38}

Changes to test/tkt-cbd054fa6b.test.

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    INSERT INTO t1 VALUES (NULL, 'C');
    INSERT INTO t1 VALUES (NULL, 'D');
    INSERT INTO t1 VALUES (NULL, 'E');
    INSERT INTO t1 VALUES (NULL, 'F');
    INSERT INTO t1 VALUES (NULL, 'G');
    INSERT INTO t1 VALUES (NULL, 'H');
    INSERT INTO t1 VALUES (NULL, 'I');










    SELECT count(*) FROM t1;
  }
} {10}
do_test tkt-cbd05-1.2 {
  db eval {
    ANALYZE;
  }
} {}
do_test tkt-cbd05-1.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x { A B C D E F G H I}}

do_test tkt-cbd05-2.1 {
  db eval {
    DROP TABLE t1;
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b BLOB UNIQUE NOT NULL);
    CREATE INDEX t1_x ON t1(b);
    INSERT INTO t1 VALUES(NULL, X'');
................................................................................
    INSERT INTO t1 VALUES(NULL, X'43');
    INSERT INTO t1 VALUES(NULL, X'44');
    INSERT INTO t1 VALUES(NULL, X'45');
    INSERT INTO t1 VALUES(NULL, X'46');
    INSERT INTO t1 VALUES(NULL, X'47');
    INSERT INTO t1 VALUES(NULL, X'48');
    INSERT INTO t1 VALUES(NULL, X'49');










    SELECT count(*) FROM t1;
  }
} {10}
do_test tkt-cbd05-2.2 {
  db eval {
    ANALYZE;
  }
} {}
do_test tkt-cbd05-2.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x { A B C D E F G H I}}

finish_test







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    INSERT INTO t1 VALUES (NULL, 'C');
    INSERT INTO t1 VALUES (NULL, 'D');
    INSERT INTO t1 VALUES (NULL, 'E');
    INSERT INTO t1 VALUES (NULL, 'F');
    INSERT INTO t1 VALUES (NULL, 'G');
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    INSERT INTO t1 VALUES (NULL, 'I');
    INSERT INTO t1 VALUES (NULL, 'J');
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    INSERT INTO t1 VALUES (NULL, 'L');
    INSERT INTO t1 VALUES (NULL, 'M');
    INSERT INTO t1 VALUES (NULL, 'N');
    INSERT INTO t1 VALUES (NULL, 'O');
    INSERT INTO t1 VALUES (NULL, 'P');
    INSERT INTO t1 VALUES (NULL, 'Q');
    INSERT INTO t1 VALUES (NULL, 'R');
    INSERT INTO t1 VALUES (NULL, 'S');
    SELECT count(*) FROM t1;
  }
} {20}
do_test tkt-cbd05-1.2 {
  db eval {
    ANALYZE;
  }
} {}
do_test tkt-cbd05-1.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x {A C E G I K M O Q S}}

do_test tkt-cbd05-2.1 {
  db eval {
    DROP TABLE t1;
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b BLOB UNIQUE NOT NULL);
    CREATE INDEX t1_x ON t1(b);
    INSERT INTO t1 VALUES(NULL, X'');
................................................................................
    INSERT INTO t1 VALUES(NULL, X'43');
    INSERT INTO t1 VALUES(NULL, X'44');
    INSERT INTO t1 VALUES(NULL, X'45');
    INSERT INTO t1 VALUES(NULL, X'46');
    INSERT INTO t1 VALUES(NULL, X'47');
    INSERT INTO t1 VALUES(NULL, X'48');
    INSERT INTO t1 VALUES(NULL, X'49');
    INSERT INTO t1 VALUES(NULL, X'4A');
    INSERT INTO t1 VALUES(NULL, X'4B');
    INSERT INTO t1 VALUES(NULL, X'4C');
    INSERT INTO t1 VALUES(NULL, X'4D');
    INSERT INTO t1 VALUES(NULL, X'4E');
    INSERT INTO t1 VALUES(NULL, X'4F');
    INSERT INTO t1 VALUES(NULL, X'50');
    INSERT INTO t1 VALUES(NULL, X'51');
    INSERT INTO t1 VALUES(NULL, X'52');
    INSERT INTO t1 VALUES(NULL, X'53');
    SELECT count(*) FROM t1;
  }
} {20}
do_test tkt-cbd05-2.2 {
  db eval {
    ANALYZE;
  }
} {}
do_test tkt-cbd05-2.3 {
  execsql { 
    SELECT tbl,idx,group_concat(sample,' ') 
    FROM sqlite_stat2 
    WHERE idx = 't1_x' 
    GROUP BY tbl,idx
  }
} {t1 t1_x {A C E G I K M O Q S}}

finish_test