sqliteHow do I use the SQLite VARCHAR data type?
The SQLite VARCHAR data type is used to store variable-length character strings. It can store up to 1,073,741,824 characters. To use it, you must specify the maximum size of the string you want to store when you create the table. For example:
CREATE TABLE contacts (
name VARCHAR(50)
);
This will create a table called contacts
with a column called name
that can store up to 50 characters.
You can then insert values into the table like this:
INSERT INTO contacts (name) VALUES ('John');
You can also use the VARCHAR
data type in SELECT
statements. For example:
SELECT name FROM contacts WHERE name LIKE 'J%';
This will return all names from the contacts
table that start with the letter J
.
You can also use the VARCHAR
data type in UPDATE
statements. For example:
UPDATE contacts SET name = 'Jane' WHERE name = 'John';
This will update the name
column for all rows where the name is John
to Jane
.
Helpful links
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