Details
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Bug
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Status: Confirmed (View Workflow)
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Major
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Resolution: Unresolved
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10.0, 10.1, 10.0.30, 10.1.21, 10.2.4, 10.2
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None
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Windows and Linux. Latest 10.0, 10.1 and 10.2 versions.
Description
LOAD DATA INFILE with a binary blob fails when using UTF8 char sets. The result is additional escaped characters in the binary data when being accessed.
Test case - run against 10.0/1/2 of MariaDB. Injects binary blob that should only be escape processed for binary content and not treated as utf8; however MariaDB seems to be adding an extra escape to the binary contents - MySQL 5.6.35 is fine. The database and client connection are completely set up to use UTF8.
This might be related to MDEV-11079 - "Regression: LOAD DATA INFILE lost BLOB support using utf8 load files"
$ echo -n -e '\xe2\x5c\x30\x0a' > input.bin
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> select @@version; |
+----------------+ |
| @@version |
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+----------------+ |
| 10.2.4-MariaDB |
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+----------------+ |
> show variables like '%char%'; |
+--------------------------+-----------------------------------------------+ |
| Variable_name | Value |
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+--------------------------+-----------------------------------------------+ |
| character_set_client | utf8 |
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| character_set_connection | utf8 |
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| character_set_database | utf8 |
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| character_set_filesystem | binary | |
| character_set_results | utf8 |
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| character_set_server | utf8 |
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| character_set_system | utf8 |
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| character_sets_dir | C:\Program Files\MariaDB 10.2\share\charsets\ |
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+--------------------------+-----------------------------------------------+ |
8 rows in set (0.00 sec) |
> CREATE TABLE test ( binStuff mediumblob ); |
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> load data local infile 'input.bin' replace into table test; |
Query OK, 1 row affected (0.00 sec)
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Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
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> select * into outfile 'output.bin' from test; |
### Dump original input
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$ hexdump -C input.bin
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00000000 e2 5c 30 0a |.\0.|
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00000004
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### MariadDB has added an extra back-slash (5c) - probably as a result of treating it as UTF8 rather than binary.
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$ hexdump -C output.bin
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00000000 e2 5c 5c 30 0a |.\\0.|
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00000005
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Attachments
Issue Links
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