method

primary_keys

v8.1.1 - Show latest stable - 0 notes - Class: SchemaStatements

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1 (0)
5.1.7 (0)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
7.2.3 (0)
8.0.0 (0)
8.1.1 (0)
What's this?

primary_keys(table_name) public

No documentation

This method has no description. You can help the Ruby on Rails community by adding new notes.

# File activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb, line 435
        def primary_keys(table_name) # :nodoc:
          query_values(<<~SQL, "SCHEMA")
            SELECT a.attname
            FROM pg_index i
            JOIN pg_attribute a
              ON a.attrelid = i.indrelid
              AND a.attnum = ANY(i.indkey)
            WHERE i.indrelid = #{quote(quote_table_name(table_name))}::regclass
              AND i.indisprimary
            ORDER BY array_position(i.indkey, a.attnum)
          SQL
        end

primary_keys

Related methods

No documentation