diff options
| author | unknown <bar@mysql.com/bar.intranet.mysql.r18.ru> | 2006-11-07 12:45:48 +0400 |
|---|---|---|
| committer | unknown <bar@mysql.com/bar.intranet.mysql.r18.ru> | 2006-11-07 12:45:48 +0400 |
| commit | d9360eae3b57c7ef4b1a14b270d06c8423df3bfb (patch) | |
| tree | 7efe124c16c347e163ec9064f07a8ccfaae1341c /mysql-test/r | |
| parent | 2ab335a5b8bb3a25796824aa14325c777ce07a86 (diff) | |
| download | mariadb-git-d9360eae3b57c7ef4b1a14b270d06c8423df3bfb.tar.gz | |
Bug#23451 GROUP_CONCAT truncates a multibyte utf8 character
Problem: GROUP_CONCAT on a multi-byte column can truncate
in the middle of a multibyte character when applying
group_concat_max_len limit. It produces an invalid
multi-byte character in the result string.
The second, easier version - reusing old "warning_for_row" flag,
instead of introducing of "result_is_full" - which was
added in the previous commit.
mysql-test/r/func_gconcat.result:
Adding test case
mysql-test/t/func_gconcat.test:
Adding test case
sql/item_sum.cc:
Adding well_formed_len() call not to cut
in the middle of a multi-byte character.
Diffstat (limited to 'mysql-test/r')
| -rw-r--r-- | mysql-test/r/func_gconcat.result | 62 |
1 files changed, 61 insertions, 1 deletions
diff --git a/mysql-test/r/func_gconcat.result b/mysql-test/r/func_gconcat.result index d4a46bfd79f..fa8a1e2cf6d 100644 --- a/mysql-test/r/func_gconcat.result +++ b/mysql-test/r/func_gconcat.result @@ -599,12 +599,72 @@ count(distinct (f1+1)) 1 3 drop table t1; +set names utf8; +create table t1 +( +x text character set utf8 not null, +y integer not null +); +insert into t1 values (repeat('a', 1022), 0), (repeat(_utf8 0xc3b7, 4), 0); +set group_concat_max_len= 1022 + 10; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1032 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7 +set group_concat_max_len= 1022 + 9; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1031 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7 +set group_concat_max_len= 1022 + 8; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1030 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7 +set group_concat_max_len= 1022 + 7; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1029 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7 +set group_concat_max_len= 1022 + 6; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1028 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7 +set group_concat_max_len= 1022 + 5; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1027 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7 +set group_concat_max_len= 1022 + 4; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1026 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7 +set group_concat_max_len= 1022 + 3; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1025 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7 +set group_concat_max_len= 1022 + 2; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1024 1023 1023 aaaaaaaaaaa, 61616161612C +set group_concat_max_len= 1022 + 1; +select @x:=group_concat(x) from t1 group by y; +select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12); +@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12) +1023 1023 1023 aaaaaaaaaaa, 61616161612C +drop table t1; +set group_concat_max_len=1024; +set names latin1; create table t1 (f1 int unsigned, f2 varchar(255)); insert into t1 values (1,repeat('a',255)),(2,repeat('b',255)); select f2,group_concat(f1) from t1 group by f2; Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr def test t1 t1 f2 f2 253 255 255 Y 0 0 8 -def group_concat(f1) 252 400 1 Y 128 0 63 +def group_concat(f1) 252 1024 1 Y 128 0 63 f2 group_concat(f1) aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 1 bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2 |