ERROR: operator does not exist: character varying = integer

This error message is usually thrown when you are trying to compare or equate a character varying (string) data type with an integer data type. The error message is indicating that there is no operator defined for comparing these two data types.

For example, if you have a table with a column of type character varying and you try to compare it to an integer value:

SELECT * FROM my_table WHERE my_column = 5;

You will get the "operator does not exist: character varying = integer" error message.

To fix this error, you need to make sure that you are comparing the correct data types. You can either convert the integer to a string using the CAST() function or convert the string to an integer using the ::integer operator.

For example:

SELECT * FROM my_table WHERE my_column = '5';

or

SELECT * FROM my_table WHERE my_column::integer = 5;