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This patch adds a way to override default collations (or "character set collations") for desired character sets. The SQL standard says: > Each collation known in an SQL-environment is applicable to one > or more character sets, and for each character set, one or more > collations are applicable to it, one of which is associated with > it as its character set collation. In MariaDB, character set collations has been hard-coded so far, e.g. utf8mb4_general_ci has been a hard-coded character set collation for utf8mb4. This patch allows to override (globally per server, or per session) character set collations, so for example, uca1400_ai_ci can be set as a character set collation for Unicode character sets (instead of compiled xxx_general_ci). The array of overridden character set collations is stored in a new (session and global) system variable @@character_set_collations and can be set as a comma separated list of charset=collation pairs, e.g.: SET @@character_set_collations='utf8mb3=uca1400_ai_ci,utf8mb4=uca1400_ai_ci'; The variable is empty by default, which mean use the hard-coded character set collations (e.g. utf8mb4_general_ci for utf8mb4). The variable can also be set globally by passing to the server startup command line, and/or in my.cnf. |
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| .. | ||
| async_example.c | ||
| client_metadata.h | ||
| client_priv.h | ||
| CMakeLists.txt | ||
| completion_hash.cc | ||
| completion_hash.h | ||
| echo.c | ||
| mariadb-conv.cc | ||
| my_readline.h | ||
| mysql.cc | ||
| mysql_plugin.c | ||
| mysql_upgrade.c | ||
| mysqladmin.cc | ||
| mysqlbinlog.cc | ||
| mysqlcheck.c | ||
| mysqldump.c | ||
| mysqlimport.c | ||
| mysqlshow.c | ||
| mysqlslap.c | ||
| mysqltest.cc | ||
| readline.cc | ||