Class | Sequel::Postgres::Database
In: | lib/sequel/adapters/postgres.rb
Parent: | Sequel::Database

Database class for PostgreSQL databases used with Sequel and the pg, postgres, or postgres-pr driver.

### Methods

connect dataset execute execute_insert new

### Included Modules

Sequel::Postgres::DatabaseMethods

### Public Class methods

new(*args)

Add the primary_keys and primary_key_sequences instance variables, so we can get the correct return values for inserted rows.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 187
    187:       def initialize(*args)
    188:         super
    189:         @primary_keys = {}
    190:         @primary_key_sequences = {}
    191:       end

### Public Instance methods

connect(server)

Connects to the database. In addition to the standard database options, using the :encoding or :charset option changes the client encoding for the connection.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 196
    196:       def connect(server)
    197:         opts = server_opts(server)
    198:         conn = Adapter.connect(
    199:           (opts[:host] unless blank_object?(opts[:host])),
    200:           opts[:port] || 5432,
    201:           nil, '',
    202:           opts[:database],
    203:           opts[:user],
    204:           opts[:password]
    205:         )
    206:         if encoding = opts[:encoding] || opts[:charset]
    207:           if conn.respond_to?(:set_client_encoding)
    208:             conn.set_client_encoding(encoding)
    209:           else
    210:             conn.async_exec("set client_encoding to '#{encoding}'")
    211:           end
    212:         end
    213:         conn.db = self
    214:         conn.apply_connection_settings
    215:         conn
    216:       end

dataset(opts = nil)

Return instance of Sequel::Postgres::Dataset with the given options.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 219
    219:       def dataset(opts = nil)
    220:         Postgres::Dataset.new(self, opts)
    221:       end

execute(sql, opts={}, &block)

Execute the given SQL with the given args on an available connection.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 224
    224:       def execute(sql, opts={}, &block)
    225:         check_database_errors do
    226:           return execute_prepared_statement(sql, opts, &block) if Symbol === sql
    227:           synchronize(opts[:server]){|conn| conn.execute(sql, opts[:arguments], &block)}
    228:         end
    229:       end

execute_insert(sql, opts={})

Insert the values into the table and return the primary key (if automatically generated).

[Source]

         # File lib/sequel/adapters/postgres.rb, line 233
    233:       def execute_insert(sql, opts={})
    234:         return execute(sql, opts) if Symbol === sql
    235:         check_database_errors do
    236:           synchronize(opts[:server]) do |conn|
    237:             conn.execute(sql, opts[:arguments])
    238:             insert_result(conn, opts[:table], opts[:values])
    239:           end
    240:         end
    241:       end

[Validate]