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Add initial infrastructure for cursors. In where.c, optimize out clauses

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of the form "ORDER BY rowid" if a table scan is being performed.  Do a
reverse table scan if "ORDER BY rowid DESC" is present. (CVS 2141)

FossilOrigin-Name: fc8c1393c86017a816beb52725b68af3b973f979
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drh
2004-11-22 19:12:19 +00:00
parent 8237d45ed8
commit b6c29897eb
17 changed files with 671 additions and 93 deletions
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13
test/alter.test
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# 2004 November 10
#
# The author or author's hereby grant to the public domain a non-exclusive,
# fully paid-up, perpetual, license in the software and all related
# intellectual property to make, have made, use, have used, reproduce,
# prepare derivative works, distribute, perform and display the work.
# 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. The
# focus of this script is testing the ALTER TABLE statement.
#
# $Id: alter.test,v 1.7 2004/11/22 13:35:42 danielk1977 Exp $
# $Id: alter.test,v 1.8 2004/11/22 19:12:21 drh Exp $
#
set testdir [file dirname $argv0]