Find base tables that have optional columns for recording both given name and surname and do not have a CHECK constraint that requires that at least one of the name components must be registered in case of each person.
Type
Problem detection (Each row in the result could represent a flaw in the design)
SELECT table_schema, table_name
FROM INFORMATION_SCHEMA.tables
WHERE table_type='BASE TABLE'
AND 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.columns
WHERE column_name~*'^[_]*(eesnimi|firstname|first_name|given_name|givenname)[_]*$'
AND is_nullable='YES')
AND (table_schema, table_name) IN (SELECT table_schema, table_name
FROM information_schema.columns
WHERE column_name~*'^[_]*(perenimi|perekonnanimi|given_name|givenname|surname|family_name|last_name|lastname)[_]*$'
AND is_nullable='YES')
AND (table_schema, table_name) NOT IN
(select
(select nspname from pg_namespace where oid=c.relnamespace) as target_schema,
c.relname as target_table
from pg_constraint o inner join pg_class c on c.oid = o.conrelid
where o.contype = 'c'
and cardinality(o.conkey)>1
and (substring(pg_get_constraintdef(o.oid),7)~*'is[[:space:]]+not[[:space:]]+null'
or substring(pg_get_constraintdef(o.oid),7)~*'(?<=not.*)is[[:space:]]+null')
and substring(pg_get_constraintdef(o.oid),7)~*'(eesnimi|firstname|first_name|given_name|givenname)'
and substring(pg_get_constraintdef(o.oid),7)~*'(perenimi|perekonnanimi|given_name|givenname|surname|family_name|last_name|lastname)')
ORDER BY table_schema, table_name;
Collections
This query belongs to the following collections:
Name
Description
Find problems automatically
Queries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not .
Categories
This query is classified under the following categories:
Name
Description
CHECK constraints
Queries of this category provide information about CHECK constraints.
Result quality depends on names
Queries of this category use names (for instance, column names) to try to guess the meaning of a database object. Thus, the goodness of names determines the number of false positive and false negative results.
Validity and completeness
Queries of this category provide information about whether database design represents the world (domain) correctly (validity) and whether database design captures all the information about the world (domain) that is correct and relevant (completeness).