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MySQL Error #1071 – Specified key was too long; max key length is 767 bytes

When I executed the following command: ALTER TABLE `mytable` ADD UNIQUE ( `column1` , `column2` ); I got this error message: #1071 - ...

April 29, 2022
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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?

What is meant by nvarchar? What is the difference between char, nchar, varchar, and nvarchar in SQL Server? 12 s 12 Just to ...

April 28, 2022
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Difference between text and varchar (character varying)

What’s the difference between the text data type and the character varying (varchar) data types? According to the documentation If character varying is ...

April 20, 2022
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MySQL: Large VARCHAR vs. TEXT?

I’ve got a messages table in MySQL which records messages between users. Apart from the typical ids and message types (all integer types) ...

April 18, 2022
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What is the difference between varchar and nvarchar?

Is it just that nvarchar supports multibyte characters? If that is the case, is there really any point, other than storage concerns, to ...

April 12, 2022
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