WITH pwd_tables AS (SELECT 
o.conname AS constraint_name,
n.nspname AS table_schema,
c.relname as table_name, 
substring(pg_get_constraintdef(o.oid),7) AS check_clause
FROM pg_constraint o INNER JOIN pg_class c ON c.oid = o.conrelid
INNER JOIN pg_namespace n ON n.oid=c.relnamespace
INNER JOIN pg_attribute a ON a.attrelid = c.oid AND a.attnum = o.conkey[1] AND a.attisdropped = FALSE
WHERE cardinality(o.conkey)=1 AND o.contype = 'c' AND
a.attname~*'(parool|salasona|passw*|pwd)'
AND n.nspname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL))
SELECT format('ALTER TABLE %1$I.%2$I DROP CONSTRAINT %3$I;', table_schema, table_name, constraint_name) AS statements
FROM pwd_tables
WHERE (check_clause~'(>|<)' AND check_clause!~'btrim[(].+[)][[:space:]]*<>' AND check_clause!~'[[:space:]]*<>[[:space:]]*['']{2}') OR
(check_clause~'~.+(\{[[:digit:]]+,\}|\{,[[:digit:]]+\})') 
ORDER BY table_schema, table_name ;

WITH pwd_domains AS (
SELECT cdu.domain_schema, cdu.domain_name, dc.constraint_name, cc.check_clause
FROM ((INFORMATION_SCHEMA.column_domain_usage AS cdu INNER JOIN
INFORMATION_SCHEMA.tables AS t USING (table_schema, table_name)) INNER JOIN INFORMATION_SCHEMA.domain_constraints AS dc
USING (domain_schema, domain_name)) INNER JOIN INFORMATION_SCHEMA.check_constraints AS cc
USING (constraint_catalog, constraint_schema, constraint_name)
WHERE t.table_type='BASE TABLE' AND cdu.column_name~*'(parool|salasona|passw*|pwd)' AND
cc.check_clause NOT LIKE '%IS NOT NULL'  AND 
cdu.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))
SELECT format('ALTER DOMAIN %1$I.%2$I DROP CONSTRAINT %3$I;', domain_schema, domain_name, constraint_name) AS statements
FROM pwd_domains
WHERE (check_clause~'(>|<)' AND check_clause!~'btrim[(].+[)][[:space:]]*<>' AND check_clause!~'[[:space:]]*<>[[:space:]]*['']{2}') OR
(check_clause~'~.+(\{[[:digit:]]+,\}|\{,[[:digit:]]+\})') 
ORDER BY domain_schema, domain_name;