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fd247cc21f
This patch also fixes:
MDEV-33050 Build-in schemas like oracle_schema are accent insensitive
MDEV-33084 LASTVAL(t1) and LASTVAL(T1) do not work well with lower-case-table-names=0
MDEV-33085 Tables T1 and t1 do not work well with ENGINE=CSV and lower-case-table-names=0
MDEV-33086 SHOW OPEN TABLES IN DB1 -- is case insensitive with lower-case-table-names=0
MDEV-33088 Cannot create triggers in the database `MYSQL`
MDEV-33103 LOCK TABLE t1 AS t2 -- alias is not case sensitive with lower-case-table-names=0
MDEV-33109 DROP DATABASE MYSQL -- does not drop SP with lower-case-table-names=0
MDEV-33110 HANDLER commands are case insensitive with lower-case-table-names=0
MDEV-33119 User is case insensitive in INFORMATION_SCHEMA.VIEWS
MDEV-33120 System log table names are case insensitive with lower-cast-table-names=0
- Removing the virtual function strnncoll() from MY_COLLATION_HANDLER
- Adding a wrapper function CHARSET_INFO::streq(), to compare
two strings for equality. For now it calls strnncoll() internally.
In the future it will turn into a virtual function.
- Adding new accent sensitive case insensitive collations:
- utf8mb4_general1400_as_ci
- utf8mb3_general1400_as_ci
They implement accent sensitive case insensitive comparison.
The weight of a character is equal to the code point of its
upper case variant. These collations use Unicode-14.0.0 casefolding data.
The result of
my_charset_utf8mb3_general1400_as_ci.strcoll()
is very close to the former
my_charset_utf8mb3_general_ci.strcasecmp()
There is only a difference in a couple dozen rare characters, because:
- the switch from "tolower" to "toupper" comparison, to make
utf8mb3_general1400_as_ci closer to utf8mb3_general_ci
- the switch from Unicode-3.0.0 to Unicode-14.0.0
This difference should be tolarable. See the list of affected
characters in the MDEV description.
Note, utf8mb4_general1400_as_ci correctly handles non-BMP characters!
Unlike utf8mb4_general_ci, it does not treat all BMP characters
as equal.
- Adding classes representing names of the file based database objects:
Lex_ident_db
Lex_ident_table
Lex_ident_trigger
Their comparison collation depends on the underlying
file system case sensitivity and on --lower-case-table-names
and can be either my_charset_bin or my_charset_utf8mb3_general1400_as_ci.
- Adding classes representing names of other database objects,
whose names have case insensitive comparison style,
using my_charset_utf8mb3_general1400_as_ci:
Lex_ident_column
Lex_ident_sys_var
Lex_ident_user_var
Lex_ident_sp_var
Lex_ident_ps
Lex_ident_i_s_table
Lex_ident_window
Lex_ident_func
Lex_ident_partition
Lex_ident_with_element
Lex_ident_rpl_filter
Lex_ident_master_info
Lex_ident_host
Lex_ident_locale
Lex_ident_plugin
Lex_ident_engine
Lex_ident_server
Lex_ident_savepoint
Lex_ident_charset
engine_option_value::Name
- All the mentioned Lex_ident_xxx classes implement a method streq():
if (ident1.streq(ident2))
do_equal();
This method works as a wrapper for CHARSET_INFO::streq().
- Changing a lot of "LEX_CSTRING name" to "Lex_ident_xxx name"
in class members and in function/method parameters.
- Replacing all calls like
system_charset_info->coll->strcasecmp(ident1, ident2)
to
ident1.streq(ident2)
- Taking advantage of the c++11 user defined literal operator
for LEX_CSTRING (see m_strings.h) and Lex_ident_xxx (see lex_ident.h)
data types. Use example:
const Lex_ident_column primary_key_name= "PRIMARY"_Lex_ident_column;
is now a shorter version of:
const Lex_ident_column primary_key_name=
Lex_ident_column({STRING_WITH_LEN("PRIMARY")});
110 lines
3 KiB
C
110 lines
3 KiB
C
/* Copyright (c) 2000-2005, 2007 MySQL AB, 2009 Sun Microsystems, Inc.
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Use is subject to license terms.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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/* Written by Sergei A. Golubchik, who has a shared copyright to this code */
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/* some definitions for full-text indices */
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/* #include "myisam.h" */
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#ifndef _ft_global_h
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#define _ft_global_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <my_compare.h>
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#define HA_FT_MAXBYTELEN 254
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#define HA_FT_MAXCHARLEN (HA_FT_MAXBYTELEN/3)
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#define DEFAULT_FTB_SYNTAX "+ -><()~*:\"\"&|"
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typedef struct st_ft_info FT_INFO;
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struct _ft_vft
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{
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int (*read_next)(FT_INFO *, char *);
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float (*find_relevance)(FT_INFO *, uchar *, uint);
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void (*close_search)(FT_INFO *);
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float (*get_relevance)(FT_INFO *);
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void (*reinit_search)(FT_INFO *);
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};
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typedef struct st_ft_info_ext FT_INFO_EXT;
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struct _ft_vft_ext
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{
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uint (*get_version)(); // Extended API version
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ulonglong (*get_flags)();
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ulonglong (*get_docid)(FT_INFO_EXT *);
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ulonglong (*count_matches)(FT_INFO_EXT *);
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};
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/* Flags for extended FT API */
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#define FTS_ORDERED_RESULT (1LL << 1)
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#define FTS_DOCID_IN_RESULT (1LL << 2)
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#ifndef FT_CORE
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struct st_ft_info
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{
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struct _ft_vft *please; /* INTERCAL style :-) */
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};
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struct st_ft_info_ext
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{
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struct _ft_vft *please; /* INTERCAL style :-) */
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struct _ft_vft_ext *could_you;
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};
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#endif
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extern const char *ft_stopword_file;
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extern const char *ft_precompiled_stopwords[];
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extern ulong ft_min_word_len;
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extern ulong ft_max_word_len;
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extern ulong ft_query_expansion_limit;
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extern const char *ft_boolean_syntax;
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extern struct st_mysql_ftparser ft_default_parser;
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int ft_init_stopwords(void);
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void ft_free_stopwords(void);
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#define FT_NL 0
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#define FT_BOOL 1
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#define FT_SORTED 2
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#define FT_EXPAND 4 /* query expansion */
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FT_INFO *ft_init_search(uint,void *, uint, uchar *, size_t,
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CHARSET_INFO *, uchar *);
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my_bool ft_boolean_check_syntax_string(const uchar *, size_t length,
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CHARSET_INFO *cs);
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/* Internal symbols for fulltext between maria and MyISAM */
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#define HA_FT_WTYPE HA_KEYTYPE_FLOAT
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#define HA_FT_WLEN 4
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#define FT_SEGS 2
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#define ft_sintXkorr(A) mi_sint4korr(A)
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#define ft_intXstore(T,A) mi_int4store(T,A)
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extern const HA_KEYSEG ft_keysegs[FT_SEGS];
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typedef union {int32 i; float f;} FT_WEIGTH;
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#ifdef __cplusplus
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}
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#endif
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#endif
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