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 detailed explanation (be sure to also read the comments).
What is the difference between char, nchar, varchar, and nvarchar …
Oct 6, 2008 · 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 maximum storage size is 2^31-1 bytes (2 GB). The storage size is the actual length of the data entered + 2 bytes.
What is the difference between varchar and nvarchar?
28 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 characters Occupies 1 byte of space for each character Nvarchar: Variable-length Unicode character data. It is a variable-length data type
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)?
How to insert a line break in a SQL Server VARCHAR/NVARCHAR …
Aug 27, 2008 · How to insert a line break in a SQL Server VARCHAR/NVARCHAR string Asked 16 years, 11 months ago Modified 10 months ago Viewed 1.6m times
What does the specified number mean in a VARCHAR() clause?
1 char and varchar actually becomes irrelevant if you have just 1 variable length field in your table, like a varchar or text. Mysql will automatically change all char to varchar. The fixed length/size record can give you extra performance, but you can't use any variable length field types.
Changing the maximum length of a varchar column?
Jan 12, 2012 · I'm trying to update the length of a varchar column from 255 characters to 500 without losing the contents. I've dropped and re-created tables before but I've never been exposed to the alter statem...
SQL take just the numeric values from a varchar - Stack Overflow
Jul 5, 2012 · Say i have a few fields like the following: abd738927 jaksm234234 hfk342 ndma0834 jon99322 Type: varchar. How do I take just the numeric values from this to display: 738927 234234 342 0834 99322...
Snowflake change data type of column in table, varchar -> Date
Jan 5, 2022 · How do I change a varchar data type to a DATE for the column datatype in a table? Tried the following: ALTER TABLE table.name.here MODIFY COLUMN insert_dt DATE; I just get SQL compilation error: ca...
Maximum size of a varchar (max) variable - Stack Overflow
At any time in the past, if someone had asked me the maximum size for a varchar(max), I'd have said 2GB, or looked up a more exact figure (2^31-1, or 2147483647). However, in some recent testing, I