Using the SQL LIKE operator with tuple insertion

PandaPanda :

I am trying to write a SQL query where a user inputs a name, and with tuple insertion the query returns similar names in the database using the LIKE operator.

This is what I tried:

user_input = input('Enter name: ')
c.execute('SELECT FirstName, LastName FROM Person WHERE FirstName LIKE('%' + ? + '%')', user_input)

user_input = input('Enter name: ')
c.execute('SELECT FirstName, LastName FROM Person WHERE FirstName LIKE '%' + user_input + '%'')

user_input = input('Enter name: ')
c.execute('SELECT FirstName, LastName FROM Person WHERE FirstName LIKE ?', '%' + user_input + '%')

However, the query fails to run and I am getting these errors.

TypeError: not all arguments converted during string formatting
TypeError: must be str, not tuple

Any help is appreciated!

blhsing :

You can either use double quotes to quote the SQL query in order to allow single quotes to quote the % characters:

c.execute("SELECT FirstName, LastName FROM Person WHERE FirstName LIKE '%' || ? || '%'",
    (user_input,))

or pass to the placeholder in the SQL query a string with user_input already enclosed in % characters:

c.execute('SELECT FirstName, LastName FROM Person WHERE FirstName LIKE ?',
    (f'%{user_input}%',))

Guess you like

Origin http://43.154.161.224:23101/article/api/json?id=298119&siteId=1

Using the SQL LIKE operator with tuple insertion

SQL LIKE operator

SQL - LIKE operator

halcon tuple operator

SQL predicate LIKE operator and wildcard percent sign %, underscore _, brackets []

How to edit the SQL statement using preparedStatement while using like the

Grouping By in Java on a tuple like Objects

Unter Verwendung des SQL LIKE Operator tuple Einfügung

Oracle sql language fuzzy query--the tutorial of using wildcard like

SQL - IN operator

SQL like

1.7 C++ stream insertion operator overloading

Using the ternary operator

And operator and using Or in the query

Operator using PTR

Using Sobel operator in OpenCv

En utilisant l'opérateur LIKE SQL avec insertion de tuple

Why can I combine a bitwise operator with a math operator, like &+, in Java?

C++ looks like a pit operator overloading

Python list comprehension, tuple comprehension dictionary comprehension, ternary operator

Explain Word _ looks a bit like Python tuple dictionary (named Ganso)

SQL UNION operator

And _% difference in SQL and the like and =

The usage of like in sql statement

like '%%' query in SQL

Parameterized query in like in sql

python and the input and output list and using the tuple