mariadb/storage/connect
Alexander Barkov fd247cc21f MDEV-31340 Remove MY_COLLATION_HANDLER::strcasecmp()
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")});
2024-04-18 15:22:10 +04:00
..
mysql-test/connect
.gitignore
ApacheInterface.java
array.cpp
array.h
blkfil.cpp
blkfil.h
block.h
bson.cpp
bson.h
bsonudf.cpp
bsonudf.h
catalog.h
checklvl.h
Client.java
Client2.java
Client3.java
CMakeLists.txt
cmgfam.cpp
cmgfam.h
cmgoconn.cpp
cmgoconn.h
colblk.cpp
colblk.h
connect.cc
connect.h
csort.cpp
csort.h
domdoc.cpp
domdoc.h
encas.h
engmsg.h
enids.h
filamap.cpp
filamap.h
filamdbf.cpp
filamdbf.h
filamfix.cpp
filamfix.h
filamgz.cpp
filamgz.h
filamtxt.cpp
filamtxt.h
filamvct.cpp
filamvct.h
filamzip.cpp
filamzip.h
filter.cpp
filter.h
fmdlex.c
global.h
ha_connect.cc
ha_connect.h
inihandl.cpp
inihandl.h
ioapi.c
ioapi.h
javaconn.cpp
javaconn.h
jdbccat.h
JdbcInterface.java
jdbconn.cpp
jdbconn.h
jmgfam.cpp
jmgfam.h
jmgoconn.cpp
jmgoconn.h
json.cpp
json.h
jsonudf.cpp
jsonudf.h
libdoc.cpp
libdoc.h
macutil.cpp
macutil.h
maputil.cpp
maputil.h
MariadbInterface.java
messages.h
mini-global.h
mongo.cpp
mongo.h
Mongo2Interface.java
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msgid.h
mycat.cc
mycat.h
myconn.cpp
myconn.h
MysqlInterface.java
myutil.cpp
myutil.h
noconst.c
odbccat.h
odbconn.cpp
odbconn.h
OracleInterface.java
os.h
osutil.c
osutil.h
plgcnx.h
plgdbsem.h
plgdbutl.cpp
plgodbc.h
plgxml.cpp
plgxml.h
plugutil.cpp
PostgresqlInterface.java
preparse.h
rcmsg.c
rcmsg.h
reldef.cpp
reldef.h
resource.h
rest.def
restget.cpp
tabbson.cpp
tabbson.h
tabcmg.cpp
tabcmg.h
tabcol.cpp
tabcol.h
tabdos.cpp
tabdos.h
tabext.cpp
tabext.h
tabfix.cpp
tabfix.h
tabfmt.cpp
tabfmt.h
tabjdbc.cpp
tabjdbc.h
tabjmg.cpp
tabjmg.h
tabjson.cpp
tabjson.h
table.cpp
tabmac.cpp
tabmac.h
tabmul.cpp
tabmul.h
tabmysql.cpp
tabmysql.h
taboccur.cpp
taboccur.h
tabodbc.cpp
tabodbc.h
tabpivot.cpp
tabpivot.h
tabrest.cpp
tabrest.h
tabsys.cpp
tabsys.h
tabtbl.cpp
tabtbl.h
tabutil.cpp
tabutil.h
tabvct.cpp
tabvct.h
tabvir.cpp
tabvir.h
tabwmi.cpp
tabwmi.h
tabxcl.cpp
tabxcl.h
tabxml.cpp
tabxml.h
tabzip.cpp
tabzip.h
TestInsert2.java
TestInsert3.java
unzip.c
unzip.h
user_connect.cc
user_connect.h
valblk.cpp
valblk.h
value.cpp
value.h
xindex.cpp
xindex.h
xobject.cpp
xobject.h
xtable.h
zip.c
zip.h