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MYSQL equivilant for MSSQL Bit datatype

Posted on 2008-06-13
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Last Modified: 2008-06-27
In my MSSQL a boolean field is a bit datatype

Havign done a migration of a MSSQL database into MySQL all my Bit values have been converted to TinyInt(4) value that dont accept a bool variables value in an insert statement.

Looking at MySQL datatypes I note that there are Bit, TinyInty(1) and Boolean  datatypes....(When I select Boolean and apply the changes to the table it changes the value to TinyInt(1))

Is Boolean the correct type to use for a boolean value (true, false)  in MySQL...is Bit interchangable with Boolean?  What is teh correct datatype to use in MySQL if i am trying to store Boolean data values.
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Question by:Prysson
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Expert Comment

by:arnold
ID: 21783879
true=1
false=0

TRUE and FALSE are define in mysql as 1 and 0.  Make sure not to enclose them as string values i.e.'true','false' during inserts.



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by:Prysson
ID: 21786872
I guess what I am asking is shoudl MySql datatype be TinyInt(1)  or Bit  to accomodate the need for a Boolean datatype.

Based on my reading either would do..I understand that MySQL has atomatic alias of True False t0 1 and zero  for the TinyInt(1)  but that Bit is more efficient...so I am wondering if

1. Does Bit also do autmatic translation of boolean value to 0 and 1
2. If Bit is more efficient why would you use TinyInt(1)
3. Is there some advantage to using Boolean (TinyInt(1)) versus Bit
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LVL 78

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by:arnold
ID: 21786942
What efficiency are you talking about storage? the bit type defined columns seem to require the use of the b'' prefix to identify the data being entered as a bit format.
i.e. b'1' is not the same as 1.



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Accepted Solution

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Prysson earned 0 total points
ID: 21787166
Never mind. TinyInt(1) is what I am looking for.

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