When InnoDB compares varchar field in ucs2 with given key using bin collation,
it calls my_strnncollsp_ucs2_bin() to perform comparison.
Because field length was lesser than length of key field should be padded
with trailing spaces in order to get correct result.
Because my_strnncollsp_ucs2_bin() was calling my_strnncollp_ucs2_bin(), which
doesn't pads field, wrong comparison result was returned. This results in
wrong result set.
my_strnncollsp_ucs2_bin() now compares fields like my_strnncollsp_ucs2 do,
but using binary collation.
When scan is completed, but lqhkeyreq is outstanding on primary replica and
starting node dies, scan will not be closed leading to error handling of failed
node not completing
field.cc:
BLOB variations have number-in-bytes limit,
unlike CHAR/VARCHAR which have number-of-characters limits.
A tinyblob column can store up to 255 bytes.
In the case of basic Latin letters (which use 1 byte per character)
we can store up to 255 characters in a tinyblob column.
When passing an utf8 tinyblob column as an argument into
a function (e.g. COALESCE) we need to reserve 3*255 bytes.
I.e. multiply length in bytes to mbcharlen for the character set.
Although in reality a tinyblob column can never be 3*255 bytes long,
we need to set max_length to multiply to make fix_length_and_dec()
of the function-caller (e.g. COALESCE) calculate the correct max_length
for the column being created.
ctype_utf8.result, ctype_utf8.test:
Adding test case.
for uca collation isalnum and strnncollsp don't agree on whether
0xC2A0 is a space (strnncollsp is right, isalnum is wrong).
they still don't, the bug was fixed by avoiding strnncollsp
table' lockup".
Changes from the innodb-4.1-ss11 snapshot.
Do not call os_file-create_tmpfile() at runtime. Instead, create
a tempfile at startup and guard access to it with a mutex.
Also, fix bugs:
10511: "Wrong padding of UCS2 CHAR columns in ON UPDATE CASCADE";
13778: "If FOREIGN_KEY_CHECKS=0, one can create inconsistent FOREIGN
KEYs". When FOREIGN_KEY_CHECKS=0 we still need to check that
datatypes between foreign key references are compatible.
Also, added test cases (also for bug 9802).
Fix for bug#12429: Replication tests fail: "Slave_IO_Running" differs:
The value is not important, and it depends on timing. Mask it.
Backport and extension of a fix made by Matthias in 5.0, originally it was
1.1976 05/12/05 17:57:48 mleich@mysql.com
ctype-euc_kr.c:
ctype-gb2312.c:
Adding specific well_formed_length functions
for gb2312 and euckr, to allow storing characters
which are correct according to the character set
specifications but just don't have Unicode mapping.
Previously only those which have Unicode mapping
could be stored, while unassigned characters lead
to data truncation.
Many files:
new file
