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 Types for a …
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-Unicode …
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 type, pros and …
Qual a diferença entre char, nchar, varchar e nvarchar?
Jun 21, 2017 · Qual a diferença entre usar os tipos de dados varchar e nvarchar? nvarchar existe em todo banco de dados SQL? Existe alguma diferença significante de performance entre ambos? …
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...
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 between a NULL …
Retrieve the maximum length of a VARCHAR column in SQL Server
I want to find the longest VARCHAR in a specific column of a SQL Server table. Here's an example:
t sql - Check if a varchar is a number - Stack Overflow
Dec 16, 2019 · Check if a varchar is a number Asked 15 years ago Modified 1 year, 5 months ago Viewed 174k times
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 between …
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)?