123 lines
2.7 KiB
Plaintext
123 lines
2.7 KiB
Plaintext
# 2013 August 3
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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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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix analyze9
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ifcapable !stat4 {
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finish_test
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return
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}
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proc s {blob} {
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set ret ""
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binary scan $blob c* bytes
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foreach b $bytes {
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set t [binary format c $b]
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if {[string is print $t]} {
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append ret $t
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} else {
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append ret .
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}
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}
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return $ret
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}
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db function s s
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do_test 1.0 {
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execsql { CREATE TABLE t1(a TEXT, b TEXT); }
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for {set i 0} {$i < 5} {incr i} {
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execsql {INSERT INTO t1 VALUES ('('||($i%10)||')', '('||($i%7)||')')}
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}
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execsql { CREATE INDEX i1 ON t1(a, b) }
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} {}
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do_execsql_test 1.1 {
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ANALYZE;
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} {}
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do_execsql_test 1.3 {
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SELECT tbl,idx,nEq,nLt,nDLt,test_decode(sample) FROM sqlite_stat4;
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} {
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t1 i1 {1 1} {0 0} {0 0} {(0) (0)}
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t1 i1 {1 1} {1 1} {1 1} {(1) (1)}
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t1 i1 {1 1} {2 2} {2 2} {(2) (2)}
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t1 i1 {1 1} {3 3} {3 3} {(3) (3)}
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t1 i1 {1 1} {4 4} {4 4} {(4) (4)}
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}
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do_execsql_test 1.2 {
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SELECT tbl,idx,nEq,nLt,nDLt,s(sample) FROM sqlite_stat4;
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} {
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t1 i1 {1 1} {0 0} {0 0} ...(0)(0)
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t1 i1 {1 1} {1 1} {1 1} ...(1)(1)
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t1 i1 {1 1} {2 2} {2 2} ...(2)(2)
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t1 i1 {1 1} {3 3} {3 3} ...(3)(3)
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t1 i1 {1 1} {4 4} {4 4} ...(4)(4)
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}
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#-------------------------------------------------------------------------
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# This is really just to test SQL user function "test_decode".
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#
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reset_db
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do_execsql_test 2.1 {
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CREATE TABLE t1(a, b, c);
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INSERT INTO t1 VALUES('some text', 14, NULL);
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INSERT INTO t1 VALUES(22.0, NULL, x'656667');
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CREATE INDEX i1 ON t1(a, b, c);
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ANALYZE;
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SELECT test_decode(sample) FROM sqlite_stat4;
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} {
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{22.0 NULL x'656667'}
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{{some text} 14 NULL}
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}
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#-------------------------------------------------------------------------
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#
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reset_db
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do_execsql_test 3.1 {
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CREATE TABLE t2(a, b);
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CREATE INDEX i2 ON t2(a, b);
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BEGIN;
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}
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do_test 3.2 {
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for {set i 0} {$i < 1000} {incr i} {
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set a [expr $i / 10]
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set b [expr int(rand() * 15.0)]
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execsql { INSERT INTO t2 VALUES($a, $b) }
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}
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execsql COMMIT
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} {}
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db func lindex lindex
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# Each value of "a" occurs exactly 10 times in the table.
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#
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do_execsql_test 3.3.1 {
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SELECT count(*) FROM t2 GROUP BY a;
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} [lrange [string repeat "10 " 100] 0 99]
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# The first element in the "nEq" list of all samples should therefore be 10.
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#
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do_execsql_test 3.3.2 {
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ANALYZE;
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SELECT lindex(nEq, 0) FROM sqlite_stat4;
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} [lrange [string repeat "10 " 100] 0 23]
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finish_test
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