How to escape % in a query using python's sqlalchemy's execute() and pymysql?

Question

My query is:

result = connection.execute(
         \"select id_number from Table where string like \'_stringStart%\' limit 1;\")

gives the

Answer 1

Another way to implement bound parameters:

from sqlalchemy import text

connection.execute(
    text("select id_number from Table where string like :string limit 1").\
    bindparams(string="_stringStart%")
)

or even typed strictly:

from sqlalchemy import bindparam, String, text

connection.execute(
    text("select id_number from Table where string like :string limit 1").\
    bindparams(bindparam("string", type_=String)),
    {"string"="_stringStart%"}
)

Bear in mind that text() construct is deprecated sine SQLAlchemy 1.4 and will be removed in SQLAlchemy 2.0.

Answer 2

Since this is a literal string, you're better off using a bound parameter here (illustrated using text()):

from sqlalchemy import text

connection.execute(
    text("select * from table where "
         "string like :string limit 1"), 
    string="_stringStart%")