binary column type
What is 'binary' in column type stand for? is it describe how the data is stored (in biner value)? what do we want use it for? - encryption ? - space efficiency ? - fast index ? - or ? I've searched the mysql manual but didn't find any clue about it thanks for your help before. __ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: binary column type
Chenri J [EMAIL PROTECTED] wrote on 26/11/2004 10:52:51: What is 'binary' in column type stand for? is it describe how the data is stored (in biner value)? what do we want use it for? - encryption ? - space efficiency ? - fast index ? - or ? I've searched the mysql manual but didn't find any clue about it thanks for your help before. BINARY is usually used on character columns to tell MySQL to do an case-dependent rather than case-independent indexing and selection. By default, character columns use case-independent ordering. Alec -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: binary column type
What is 'binary' in column type stand for? is it describe how the data is stored (in biner value)? what do we want use it for? - encryption ? - space efficiency ? - fast index ? - or ? AFAIK it's used for determining the behaviour while comparing values (operators, sorting, etc.). Normally 'Garçon' (4th character is c-cedille) and 'garcon' are seen as identical strings if the language collation settings are set accordingly. Characters with accents are used in many languages depending on various circumstances (compound words, plural/singular forms, etc.); so can come in handy to take this into consideration while handling the data. Also upper/lower case is ignored by default (since the letter case is often depending upon the context in which the word is used). You can use BINARY in a column type to indicate that sorting, indexing and comparing should always be done without taking the above into consideration; comparing is thus done as if it were binary data: byte by byte. You can use BINARY in an operation to indicate that this case needs to be handled as binary data. I've used it in one table where I wanted each record to be case/accent-dependent unique. Now MySQL considered 'WiNTer' as different from 'winter', etc. Regards, Jigal. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: binary column type
At 2:52 -0800 11/26/04, Chenri J wrote: What is 'binary' in column type stand for? is it describe how the data is stored (in biner value)? what do we want use it for? - encryption ? - space efficiency ? - fast index ? - or ? I've searched the mysql manual but didn't find any clue about it thanks for your help before. http://dev.mysql.com/doc/mysql/en/BINARY_VARBINARY.html -- Paul DuBois, MySQL Documentation Team Madison, Wisconsin, USA MySQL AB, www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
