ERROR: operator does not exist: character varying = integer

This error occurs when the database system is unable to perform a comparison between a character varying (string) data type and an integer data type.

For example, if you are trying to compare a string value with an integer value using the equal (=) operator, you will get this error.

To fix this error, you need to ensure that you are comparing values of the same data type. You can either convert the integer to a string or the string to an integer before performing the comparison.

For example, if you have a column named "age" that is of integer data type and you want to compare it with a string value "25", you can convert the integer to a string using the following query:

SELECT * FROM table_name WHERE age::text = '25';

Alternatively, you can convert the string to an integer using the following query:

SELECT * FROM table_name WHERE age = CAST('25' AS integer);