character varying(n)
(or varchar(n)
)n
characters (not bytes) in length.users
table to store usernames. First, let’s create the table:
varchar
when you need flexibility in string length, such as for user-generated content.character(n)
(or char(n)
)character varying(n)
but always pads with spaces.employees
table to store employee IDs:
char
when you require fixed-length strings (e.g., employee IDs).bpchar
(unlimited length, blank-trimmed)char
, but without a specified length.products
table for storing product codes:
bpchar
when you want to trim trailing spaces.text
(variable unlimited length)articles
table for storing article content:
text
for general-purpose text storage.LENGTH
, SUBSTRING
, CONCAT
).text
is the most flexible but may have slightly slower indexing.char
, bpchar
) are faster for exact-length lookups.text
or character varying
unless you have specific requirements. Feel free to experiment with different types based on your application needs!