Module: Sequel::MSSQL::DatabaseMethods
- Included in:
- ADO::MSSQL::DatabaseMethods, JDBC::MSSQL::DatabaseMethods, ODBC::MSSQL::DatabaseMethods
- Defined in:
- lib/sequel/adapters/shared/mssql.rb
Constant Summary collapse
- AUTO_INCREMENT =
'IDENTITY(1,1)'.freeze
- SERVER_VERSION_RE =
/^(\d+)\.(\d+)\.(\d+)/.freeze
- SERVER_VERSION_SQL =
"SELECT CAST(SERVERPROPERTY('ProductVersion') AS varchar)".freeze
- SQL_BEGIN =
"BEGIN TRANSACTION".freeze
- SQL_COMMIT =
"COMMIT TRANSACTION".freeze
- SQL_ROLLBACK =
"IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION".freeze
- SQL_ROLLBACK_TO_SAVEPOINT =
'IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION autopoint_%d'.freeze
- SQL_SAVEPOINT =
'SAVE TRANSACTION autopoint_%d'.freeze
- DECIMAL_TYPE_RE =
The types to check for 0 scale to transform :decimal types to :integer.
/number|numeric|decimal/io
Instance Method Summary collapse
-
#database_type ⇒ Object
Microsoft SQL Server uses the :mssql type.
-
#server_version(server = nil) ⇒ Object
The version of the MSSQL server, as an integer (e.g. 10001600 for SQL Server 2008 Express).
-
#supports_savepoints? ⇒ Boolean
MSSQL supports savepoints, though it doesn’t support committing/releasing them savepoint.
-
#supports_transaction_isolation_levels? ⇒ Boolean
MSSQL supports transaction isolation levels.
-
#tables(opts = {}) ⇒ Object
Microsoft SQL Server supports using the INFORMATION_SCHEMA to get information on tables.
Instance Method Details
#database_type ⇒ Object
Microsoft SQL Server uses the :mssql type.
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# File 'lib/sequel/adapters/shared/mssql.rb', line 19 def database_type :mssql end |
#server_version(server = nil) ⇒ Object
The version of the MSSQL server, as an integer (e.g. 10001600 for SQL Server 2008 Express).
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# File 'lib/sequel/adapters/shared/mssql.rb', line 25 def server_version(server=nil) return @server_version if @server_version @server_version = synchronize(server) do |conn| (conn.server_version rescue nil) if conn.respond_to?(:server_version) end unless @server_version m = SERVER_VERSION_RE.match(fetch(SERVER_VERSION_SQL).single_value.to_s) @server_version = (m[1].to_i * 1000000) + (m[2].to_i * 10000) + m[3].to_i end @server_version end |
#supports_savepoints? ⇒ Boolean
MSSQL supports savepoints, though it doesn’t support committing/releasing them savepoint
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# File 'lib/sequel/adapters/shared/mssql.rb', line 38 def supports_savepoints? true end |
#supports_transaction_isolation_levels? ⇒ Boolean
MSSQL supports transaction isolation levels
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# File 'lib/sequel/adapters/shared/mssql.rb', line 43 def supports_transaction_isolation_levels? true end |
#tables(opts = {}) ⇒ Object
Microsoft SQL Server supports using the INFORMATION_SCHEMA to get information on tables.
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# File 'lib/sequel/adapters/shared/mssql.rb', line 49 def tables(opts={}) m = output_identifier_meth .from(:information_schema__tables___t). select(:table_name). filter(:table_type=>'BASE TABLE', :table_schema=>(opts[:schema]||default_schema||'dbo').to_s). map{|x| m.call(x[:table_name])} end |