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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")});
118 lines
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118 lines
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#
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# Bug#46941 crash with lower_case_table_names=2 and
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# foreign data dictionary confusion
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#
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CREATE DATABASE XY;
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USE XY;
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set @old_table_open_cache=@@table_open_cache;
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set global table_open_cache = 512;
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set global table_open_cache = @old_table_open_cache;
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DROP DATABASE XY;
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USE TEST;
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#
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# Bug55222 Mysqldump table names case bug in REFERENCES clause
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# InnoDB did not handle lower_case_table_names=2 for
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# foreign_table_names and referenced_table_names.
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#
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SHOW VARIABLES LIKE 'lower_case_table_names';
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Variable_name Value
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lower_case_table_names 2
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DROP TABLE IF EXISTS `Table2`;
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DROP TABLE IF EXISTS `Table1`;
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CREATE TABLE `Table1`(c1 INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE `Table2`(c1 INT PRIMARY KEY, c2 INT) ENGINE=InnoDB;
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ALTER TABLE `Table2` ADD CONSTRAINT fk1 FOREIGN KEY(c2) REFERENCES `Table1`(c1);
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SHOW CREATE TABLE `Table2`;
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Table Table2
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Create Table CREATE TABLE `Table2` (
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`c1` int(11) NOT NULL,
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`c2` int(11) DEFAULT NULL,
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PRIMARY KEY (`c1`),
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KEY `fk1` (`c2`),
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CONSTRAINT `fk1` FOREIGN KEY (`c2`) REFERENCES `Table1` (`c1`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS WHERE CONSTRAINT_SCHEMA='test';
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CONSTRAINT_CATALOG def
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CONSTRAINT_SCHEMA test
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CONSTRAINT_NAME fk1
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UNIQUE_CONSTRAINT_CATALOG def
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UNIQUE_CONSTRAINT_SCHEMA test
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UNIQUE_CONSTRAINT_NAME PRIMARY
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MATCH_OPTION NONE
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UPDATE_RULE RESTRICT
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DELETE_RULE RESTRICT
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TABLE_NAME Table2
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REFERENCED_TABLE_NAME Table1
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DROP TABLE `Table2`;
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DROP TABLE `Table1`;
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DROP TABLE IF EXISTS Product_Order;
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DROP TABLE IF EXISTS Product;
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DROP TABLE IF EXISTS Customer;
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CREATE TABLE Product (Category INT NOT NULL, Id INT NOT NULL,
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Price DECIMAL, PRIMARY KEY(Category, Id)) ENGINE=InnoDB;
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CREATE TABLE Customer (Id INT NOT NULL, PRIMARY KEY (Id)) ENGINE=InnoDB;
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CREATE TABLE Product_Order (No INT NOT NULL AUTO_INCREMENT,
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Product_Category INT NOT NULL,
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Product_Id INT NOT NULL,
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Customer_Id INT NOT NULL,
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PRIMARY KEY(No),
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INDEX (Product_Category, Product_Id),
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FOREIGN KEY (Product_Category, Product_Id)
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REFERENCES Product(Category, Id) ON UPDATE CASCADE ON DELETE RESTRICT,
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INDEX (Customer_Id),
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FOREIGN KEY (Customer_Id)
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REFERENCES Customer(Id)
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) ENGINE=INNODB;
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SHOW CREATE TABLE Product_Order;
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Table Product_Order
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Create Table CREATE TABLE `Product_Order` (
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`No` int(11) NOT NULL AUTO_INCREMENT,
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`Product_Category` int(11) NOT NULL,
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`Product_Id` int(11) NOT NULL,
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`Customer_Id` int(11) NOT NULL,
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PRIMARY KEY (`No`),
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KEY `Product_Category` (`Product_Category`,`Product_Id`),
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KEY `Customer_Id` (`Customer_Id`),
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CONSTRAINT `product_order_ibfk_1` FOREIGN KEY (`Product_Category`, `Product_Id`) REFERENCES `Product` (`Category`, `Id`) ON UPDATE CASCADE,
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CONSTRAINT `product_order_ibfk_2` FOREIGN KEY (`Customer_Id`) REFERENCES `Customer` (`Id`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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SHOW CREATE TABLE Product;
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Table Product
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Create Table CREATE TABLE `Product` (
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`Category` int(11) NOT NULL,
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`Id` int(11) NOT NULL,
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`Price` decimal(10,0) DEFAULT NULL,
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PRIMARY KEY (`Category`,`Id`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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SHOW CREATE TABLE Customer;
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Table Customer
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Create Table CREATE TABLE `Customer` (
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`Id` int(11) NOT NULL,
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PRIMARY KEY (`Id`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
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SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS WHERE CONSTRAINT_SCHEMA='test';
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CONSTRAINT_CATALOG def
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CONSTRAINT_SCHEMA test
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CONSTRAINT_NAME product_order_ibfk_1
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UNIQUE_CONSTRAINT_CATALOG def
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UNIQUE_CONSTRAINT_SCHEMA test
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UNIQUE_CONSTRAINT_NAME PRIMARY
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MATCH_OPTION NONE
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UPDATE_RULE CASCADE
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DELETE_RULE RESTRICT
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TABLE_NAME Product_Order
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REFERENCED_TABLE_NAME Product
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CONSTRAINT_CATALOG def
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CONSTRAINT_SCHEMA test
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CONSTRAINT_NAME product_order_ibfk_2
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UNIQUE_CONSTRAINT_CATALOG def
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UNIQUE_CONSTRAINT_SCHEMA test
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UNIQUE_CONSTRAINT_NAME PRIMARY
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MATCH_OPTION NONE
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UPDATE_RULE RESTRICT
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DELETE_RULE RESTRICT
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TABLE_NAME Product_Order
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REFERENCED_TABLE_NAME Customer
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DROP TABLE Product_Order;
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DROP TABLE Product;
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DROP TABLE Customer;
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