What's the difference between VARCHAR and CHAR?
Dec 11, 2009 · VARCHAR is variable-length. CHAR is fixed length. If your content is a fixed size, you'll get better performance with CHAR. See the MySQL page on CHAR and VARCHAR …
What is the difference between varchar and nvarchar?
27 The main difference between Varchar(n) and nvarchar(n) is: Varchar ( Variable-length, non-Unicode character data) size is upto 8000. It is a variable length data type Used to store non …
What is the difference between char, nchar, varchar, and nvarchar …
Jun 27, 2013 · varchar [(n | max)] (character varying) Variable-length, non-Unicode string data. n defines the string length and can be a value from 1 through 8,000. max indicates that the …
sql - What does varchar (-1) mean? - Stack Overflow
Nov 11, 2009 · What is the meaning of varchar(-1) in SQL Server 2008? Is it an alternative for varchar(max)?
MySQL: Why use VARCHAR(20) instead of VARCHAR(255)?
Aug 12, 2009 · Possible values are 1-255. But what are its advantages if you use VARCHAR (255) that is the maximum instead of VARCHAR (20)? As far as I know, the size of the entries …
SQL Server Text type vs. varchar data type - Stack Overflow
I have variable length character data and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL …
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 used without length specifier, the type ac...
database - Is there a good reason I see VARCHAR (255) used so …
Note: I found this question (varchar (255) v tinyblob v tinytext), which says that VARCHAR (n) requires n +1 bytes of storage for n <=255, n +2 bytes of storage for n>255. Is this the only …
What is the difference between varchar and varchar2 in Oracle?
Jul 23, 2009 · VARCHAR is reserved by Oracle to support distinction between NULL and an empty string in the future, as ANSI standard prescribes. VARCHAR2 does not distinguish …
Difference between VARCHAR and TEXT in MySQL [duplicate]
Aug 14, 2014 · When we create a table in MySQL with a VARCHAR column, we have to set the length for it. But for TEXT type we don't have to provide the length. What are the differences …