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sqlite3

# 2009 December 8
#
# 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.
#
# Verify that we can create zero-length tables.
#

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

do_test tkt-78e04-1.0 {
  execsql {
    CREATE TABLE ""("" UNIQUE);
    CREATE TABLE t2(x);
    INSERT INTO "" VALUES(1);
    INSERT INTO t2 VALUES(2);
    SELECT * FROM "", t2;
  }
} {1 2}
do_test tkt-78e04-1.1 {
  catchsql {
    INSERT INTO "" VALUES(1);
  }
} {1 {column  is not unique}}
do_test tkt-78e04-1.2 {
  execsql {
    PRAGMA table_info("");
  }
} {0 {} {} 0 {} 0}
do_test tkt-78e04-1.3 {
  execsql {
    CREATE INDEX i1 ON ""("" COLLATE nocase);
  }
} {}
do_test tkt-78e04-1.4 {
  execsql {
    EXPLAIN QUERY PLAN SELECT * FROM "" WHERE "" LIKE 'abc%';
  }
} {0 0 0 {SCAN TABLE  (~500000 rows)}}
do_test tkt-78e04-1.5 {
  execsql {
    DROP TABLE "";
    SELECT name FROM sqlite_master;
  }
} {t2}

do_test tkt-78e04-2.1 {
  execsql {
    CREATE INDEX "" ON t2(x);
    EXPLAIN QUERY PLAN SELECT * FROM t2 WHERE x=5;
  }
} {0 0 0 {SEARCH TABLE t2 USING COVERING INDEX  (x=?) (~10 rows)}}
do_test tkt-78e04-2.2 {
  execsql {
    DROP INDEX "";
    EXPLAIN QUERY PLAN SELECT * FROM t2 WHERE x=2;
  }
} {0 0 0 {SCAN TABLE t2 (~100000 rows)}}

finish_test