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Re-fixup of line length in InnoDB examples. Should be <76.
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arjen@fred.bitbike.com
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0da2bd074c
1 changed files with 38 additions and 36 deletions
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@ -37591,26 +37591,26 @@ Below is an example of possible configuration parameters in
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# ...
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#
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innodb_data_home_dir = c:\ibdata
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# Data files must be able to
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# hold your data and indexes
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# Data files must be able to
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# hold your data and indexes
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innodb_data_file_path = ibdata1:2000M;ibdata2:2000M
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# Set buffer pool size to 50 - 80 %
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# of your computer's memory
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# Set buffer pool size to 50 - 80 %
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# of your computer's memory
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set-variable = innodb_buffer_pool_size=70M
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set-variable = innodb_additional_mem_pool_size=10M
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innodb_log_group_home_dir = c:\iblogs
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# .._log_arch_dir must be the same
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# as .._log_group_home_dir
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# .._log_arch_dir must be the same
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# as .._log_group_home_dir
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innodb_log_arch_dir = c:\iblogs
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innodb_log_archive=0
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set-variable = innodb_log_files_in_group=3
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# Set the log file size to about
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# 15 % of the buffer pool size
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# Set the log file size to about
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# 15 % of the buffer pool size
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set-variable = innodb_log_file_size=10M
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set-variable = innodb_log_buffer_size=8M
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# Set ..flush_log_at_trx_commit to
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# 0 if you can afford losing
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# a few last transactions
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# Set ..flush_log_at_trx_commit to
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# 0 if you can afford losing
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# a few last transactions
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innodb_flush_log_at_trx_commit=1
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set-variable = innodb_file_io_threads=4
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set-variable = innodb_lock_wait_timeout=50
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@ -37691,28 +37691,28 @@ InnoDB:
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# ...
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#
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innodb_data_home_dir = /
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# Data files must be able to
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# hold your data and indexes
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# Data files must be able to
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# hold your data and indexes
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innodb_data_file_path = ibdata/ibdata1:2000M;dr2/ibdata/ibdata2:2000M
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# Set buffer pool size to 50 - 80 %
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# of your computer's memory, but
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# make sure on Linux x86 total
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# memory usage is < 2 GB
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# Set buffer pool size to 50 - 80 %
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# of your computer's memory, but
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# make sure on Linux x86 total
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# memory usage is < 2 GB
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set-variable = innodb_buffer_pool_size=350M
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set-variable = innodb_additional_mem_pool_size=20M
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innodb_log_group_home_dir = /dr3/iblogs
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# .._log_arch_dir must be the same
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# as .._log_group_home_dir
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# .._log_arch_dir must be the same
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# as .._log_group_home_dir
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innodb_log_arch_dir = /dr3/iblogs
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innodb_log_archive=0
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set-variable = innodb_log_files_in_group=3
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# Set the log file size to about
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# 15 % of the buffer pool size
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# Set the log file size to about
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# 15 % of the buffer pool size
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set-variable = innodb_log_file_size=50M
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set-variable = innodb_log_buffer_size=8M
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# Set ..flush_log_at_trx_commit to
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# 0 if you can afford losing
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# a few last transactions
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# Set ..flush_log_at_trx_commit to
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# 0 if you can afford losing
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# a few last transactions
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innodb_flush_log_at_trx_commit=1
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set-variable = innodb_file_io_threads=4
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set-variable = innodb_lock_wait_timeout=50
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@ -37754,12 +37754,12 @@ Typical values which suit most users are:
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set-variable = max_connections=200
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set-variable = record_buffer=1M
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set-variable = sort_buffer=1M
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# Set key_buffer to 5 - 50 %
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# of your RAM depending on how
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# much you use MyISAM tables, but
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# keep key_buffer + InnoDB
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# buffer pool size < 80 % of
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# your RAM
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# Set key_buffer to 5 - 50 %
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# of your RAM depending on how
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# much you use MyISAM tables, but
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# keep key_buffer + InnoDB
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# buffer pool size < 80 % of
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# your RAM
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set-variable = key_buffer=...
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@end example
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@ -38000,8 +38000,8 @@ To get better control over the insertion process, it may be good to insert
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big tables in pieces:
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@example
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INSERT INTO newtable SELECT * FROM oldtable WHERE yourkey > something
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AND yourkey <= somethingelse;
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INSERT INTO newtable SELECT * FROM oldtable
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WHERE yourkey > something AND yourkey <= somethingelse;
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@end example
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After all data has been inserted you can rename the tables.
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@ -38034,17 +38034,18 @@ constraints to guard the integrity of your data.
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The syntax of a foreign key constraint definition in InnoDB:
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@example
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FOREIGN KEY (index_col_name, ...) REFERENCES table_name (index_col_name, ...)
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FOREIGN KEY (index_col_name, ...)
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REFERENCES table_name (index_col_name, ...)
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@end example
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Starting from version 3.23.50 the InnoDB parser allows you to
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use also backquotes around table and column names in the above
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use backquotes (`) around table and column names in the above
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definition.
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An example:
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@example
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CREATE TABLE parent(id INT NOT NULL, PRIMARY KEY (id)) TYPE=INNODB;
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CREATE TABLE child(id INT, parent_id INT, INDEX par_ind (parent_id),
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FOREIGN KEY (parent_id) REFERENCES parent(id)) TYPE=INNODB;
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FOREIGN KEY (parent_id) REFERENCES parent(id)) TYPE=INNODB;
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@end example
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Both tables have to be InnoDB type and @strong{there must be an index
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where the foreign key and the referenced key are listed as the first
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@ -38062,7 +38063,8 @@ formed for the altered table.
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Starting from version 3.23.50 InnoDB allows you to add a new
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foreign key constraint to a table through
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@example
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ALTER TABLE yourtablename ADD CONSTRAINT FOREIGN KEY (...) REFERENCES anothertablename(...)
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ALTER TABLE yourtablename
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ADD CONSTRAINT FOREIGN KEY (...) REFERENCES anothertablename(...)
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@end example
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Remember to create the required indexes first, though.
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