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Add experimental implementation of ALTER TABLE DROP COLUMN. Only some cases work so far.

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FossilOrigin-Name: f0217937d7306fb595727e61e871e8b03d8c881d339a0865bfd0117d90d42e4e
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dan
2021-02-16 20:43:36 +00:00
parent 33941691a5
commit 6e6d9833cc
7 changed files with 332 additions and 26 deletions
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test/alterdropcol.test Normal file
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# 2021 February 16
#
# 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.
#
#*************************************************************************
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix alterdropcol
# If SQLITE_OMIT_ALTERTABLE is defined, omit this file.
ifcapable !altertable {
finish_test
return
}
do_execsql_test 1.0 {
CREATE TABLE t1(a, b, c);
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2(x INTEGER PRIMARY KEY, y, z UNIQUE);
CREATE INDEX t2y ON t2(y);
}
do_catchsql_test 1.1 {
ALTER TABLE nosuch DROP COLUMN z;
} {1 {no such table: nosuch}}
do_catchsql_test 1.2 {
ALTER TABLE v1 DROP COLUMN c;
} {1 {cannot drop a column from a view}}
ifcapable fts5 {
do_execsql_test 1.3.1 {
CREATE VIRTUAL TABLE ft1 USING fts5(one, two);
}
do_catchsql_test 1.3.2 {
ALTER TABLE ft1 DROP COLUMN two;
} {1 {virtual tables may not be altered}}
}
do_catchsql_test 1.4 {
ALTER TABLE sqlite_schema DROP COLUMN sql;
} {1 {table sqlite_master may not be altered}}
do_catchsql_test 1.5 {
ALTER TABLE t1 DROP COLUMN d;
} {1 {no such column: "d"}}
do_execsql_test 1.6.1 {
ALTER TABLE t1 DROP COLUMN b;
}
do_execsql_test 1.6.2 {
SELECT sql FROM sqlite_schema WHERE name = 't1'
} {{CREATE TABLE t1(a, c)}}
do_execsql_test 1.7.1 {
ALTER TABLE t1 DROP COLUMN c;
}
do_execsql_test 1.7.2 {
SELECT sql FROM sqlite_schema WHERE name = 't1'
} {{CREATE TABLE t1(a)}}
do_catchsql_test 1.8 {
ALTER TABLE t2 DROP COLUMN z
} {1 {cannot drop UNIQUE column: "z"}}
do_catchsql_test 1.9 {
ALTER TABLE t2 DROP COLUMN x
} {1 {cannot drop PRIMARY KEY column: "x"}}
do_catchsql_test 1.10 {
ALTER TABLE t2 DROP COLUMN y
} {1 {cannot drop indexed column: "y"}}
#-------------------------------------------------------------------------
foreach {tn wo} {
1 {}
2 {WITHOUT ROWID}
} { eval [string map [list %TN% $tn %WO% $wo] {
reset_db
do_execsql_test 2.%TN%.0 {
CREATE TABLE t1(x, y INTEGER PRIMARY KEY, z) %WO% ;
INSERT INTO t1 VALUES(1, 2, 3);
INSERT INTO t1 VALUES(4, 5, 6);
INSERT INTO t1 VALUES(7, 8, 9);
}
do_execsql_test 2.%TN%.1 {
ALTER TABLE t1 DROP COLUMN x;
SELECT * FROM t1;
} {
2 3 5 6 8 9
}
do_execsql_test 2.%TN%.2 {
ALTER TABLE t1 DROP COLUMN z;
SELECT * FROM t1;
} {
2 5 8
}
}]}
finish_test