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source include/have_tokudb.inc;
# test that varchar expansion is done inplace while varchar shrinkage is not
--disable_warnings
DROP TABLE IF EXISTS t;
--enable_warnings
SET SESSION TOKUDB_DISABLE_SLOW_ALTER=ON;
CREATE TABLE t (a VARCHAR(1)) ENGINE=TokuDB;
SHOW CREATE TABLE t;
INSERT INTO t VALUES (null);
# 1->1
let $i=1
EVAL ALTER TABLE t CHANGE COLUMN a a VARCHAR($i);
# 1->2 ... 1023->1024 is supported
# 1024 is an arbitrary limit >= 256
let $i=2;
while ($i <= 1024)
{
# $i-1 -> $i
EVAL ALTER TABLE t CHANGE COLUMN a a VARCHAR($i);
# $i -> $i
EVAL ALTER TABLE t CHANGE COLUMN a a VARCHAR($i);
inc $i;
}
# shrink from 1024->$i where $i < 1024 is not supported
let $i=1023;
while ($i > 0)
{
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION
EVAL ALTER TABLE t CHANGE COLUMN a a VARCHAR($i);
dec $i;
}
DROP TABLE t;
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