How Can I Pass Dynamic Table Names as Parameters in psycopg2?

Passing dynamic table name as parameter in psycopg2

In psycopg2, dynamic table names can be passed as parameters when building SQL queries. This is useful when the table name may change based on circumstances such as user input or database configuration.

To pass the table name as a parameter, you can use the psycopg2.sql module. This module provides the Identifier class, which can be used to represent table and field names as parameters.

Here is an example of how to use the Identifier class to pass a dynamic table name as a parameter:

from psycopg2 import sql

table_name = 'ss2012_t02'
sql_query = sql.SQL("select * from {table_name}").format(table_name=sql.Identifier(table_name))

In this example, the table_name variable is passed as a parameter to the Identifier class, which creates a parameter representing the table name. Then use the format() method to insert the parameters into the SQL query string.

It should be noted that the Identifier class should not be used to represent table or field names that contain special characters (such as spaces or periods). For such names, the AsIs class should be used instead. However, the AsIs class is deprecated and should be avoided if possible.

The above is the detailed content of How Can I Pass Dynamic Table Names as Parameters in psycopg2?. For more information, please follow other related articles on the PHP Chinese website!