SET @mroonga_default_parser_backup = @@mroonga_default_parser;
SET GLOBAL mroonga_default_parser = "TokenBigramSplitAlpha";
SHOW GLOBAL VARIABLES LIKE 'mroonga_default_parser';
Variable_name	Value
mroonga_default_parser	TokenBigramSplitAlpha
SET GLOBAL mroonga_default_parser = @mroonga_default_parser_backup;
