3f4d1d1b02
that the index will be smaller and require less disk I/O and thus be faster. FossilOrigin-Name: cfaa7bc12847a7006ccc93815f2395ad5259744a
69 lines
1.6 KiB
Plaintext
69 lines
1.6 KiB
Plaintext
# 2009 December 8
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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.
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#
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# Verify that we can create zero-length tables.
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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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do_test tkt-78e04-1.0 {
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execsql {
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CREATE TABLE ""("" UNIQUE);
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CREATE TABLE t2(x);
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INSERT INTO "" VALUES(1);
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INSERT INTO t2 VALUES(2);
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SELECT * FROM "", t2;
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}
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} {1 2}
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do_test tkt-78e04-1.1 {
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catchsql {
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INSERT INTO "" VALUES(1);
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}
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} {1 {column is not unique}}
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do_test tkt-78e04-1.2 {
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execsql {
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PRAGMA table_info("");
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}
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} {0 {} {} 0 {} 0}
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do_test tkt-78e04-1.3 {
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execsql {
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CREATE INDEX i1 ON ""("" COLLATE nocase);
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}
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} {}
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do_test tkt-78e04-1.4 {
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execsql {
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EXPLAIN QUERY PLAN SELECT * FROM "" WHERE "" LIKE 'abc%';
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}
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} {0 0 0 {SCAN TABLE USING COVERING INDEX i1 (~500000 rows)}}
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do_test tkt-78e04-1.5 {
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execsql {
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DROP TABLE "";
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SELECT name FROM sqlite_master;
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}
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} {t2}
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do_test tkt-78e04-2.1 {
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execsql {
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CREATE INDEX "" ON t2(x);
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EXPLAIN QUERY PLAN SELECT * FROM t2 WHERE x=5;
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}
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} {0 0 0 {SEARCH TABLE t2 USING COVERING INDEX (x=?) (~10 rows)}}
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do_test tkt-78e04-2.2 {
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execsql {
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DROP INDEX "";
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EXPLAIN QUERY PLAN SELECT * FROM t2 WHERE x=2;
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}
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} {0 0 0 {SCAN TABLE t2 (~100000 rows)}}
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finish_test
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