Base table column of surrogate key values does not have an integer data type (based on column names)

WITH key AS (SELECT 
(SELECT nspname FROM pg_namespace WHERE oid=c.relnamespace) AS key_schema,
c.relname AS key_table, 
o.conkey AS key_col,
c.oid AS key_table_oid
FROM pg_constraint o INNER JOIN pg_class c ON c.oid = o.conrelid
WHERE o.contype IN ('f','u','p')),
key_unnest AS (SELECT key_schema, key_table, key_table_oid, key_col, key_col_num, ordin
FROM key, unnest(key.key_col) with ordinality AS k(key_col_num, ordin)),
key_with_names AS (SELECT key_schema, key_table, a_key.attname AS key_col
FROM key_unnest k INNER JOIN pg_attribute a_key ON k.key_col_num = a_key.attnum AND k.key_table_oid = a_key.attrelid AND a_key.attisdropped = FALSE)
SELECT table_schema, table_name, column_name, data_type
FROM INFORMATION_SCHEMA.columns AS c
WHERE table_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND (table_schema, table_name) IN (SELECT table_schema, table_name
FROM INFORMATION_SCHEMA.tables
WHERE table_type='BASE TABLE')
AND EXISTS (SELECT 1
FROM key_with_names AS kwn
WHERE c.table_schema=kwn.key_schema
AND c.table_name=kwn.key_table
AND c.column_name=kwn.key_col)
AND column_name~*'(_id$|^id_|^id$)'
AND column_name!~*'code'
AND data_type NOT IN ('integer', 'smallint','bigint','uuid')
ORDER BY table_schema, table_name, ordinal_position;