Difference Between Char And Varchar. Char is a fixed length data type where Varchar is a variable length data type. Yes the VAR stands for variable length in VARCHAR.
If you are storing strings with a wildly variable length such as names then use a VARCHAR if the length is always the same then use a CHAR because it is slightly more size-efficient and also slightly faster. Fixed length data type. A VARCHAR2 10 field will store Amiet as 7 bytes assuming 2 bytes to store length.
A VARCHAR2 10 field will store Amiet as 7 bytes assuming 2 bytes to store length.
VARCHAR is a variable length field. No evaluation of character. Jan 19 2015 Varchar does not let you store blank characters for the unused parts of the string. Jun 14 2016 char - is the SQL-92 synonym for character.
