Module: ActiveRecord::ConnectionAdapters::Sqlserver::DatabaseStatements
- Included in:
- ActiveRecord::ConnectionAdapters::SQLServerAdapter
- Defined in:
- lib/active_record/connection_adapters/sqlserver/database_statements.rb
Instance Method Summary collapse
- #activity_stats ⇒ Object
- #add_limit_offset!(_sql, _options) ⇒ Object
- #begin_db_transaction ⇒ Object
- #case_sensitive_modifier(node) ⇒ Object
- #charset ⇒ Object
- #commit_db_transaction ⇒ Object
- #create_database(database, collation = ) ⇒ Object
- #create_savepoint(name = current_savepoint_name) ⇒ Object
- #current_database ⇒ Object
- #drop_database(database) ⇒ Object
- #empty_insert_statement_value ⇒ Object
- #exec_delete(sql, name, binds) ⇒ Object
-
#exec_insert(sql, name, binds, _pk = nil, _sequence_name = nil) ⇒ Object
The abstract adapter ignores the last two parameters also.
- #exec_query(sql, name = 'SQL', binds = [], sqlserver_options = {}) ⇒ Object
- #exec_update(sql, name, binds) ⇒ Object
- #execute(sql, name = nil) ⇒ Object
-
#execute_procedure(proc_name, *variables) ⇒ Object
SQLServer Specific ======================================== #.
- #newid_function ⇒ Object
- #newsequentialid_function ⇒ Object
-
#recreate_database ⇒ Object
SQLServer Specific (Rake/Test Helpers) ==================== #.
- #recreate_database!(database = nil) ⇒ Object
- #release_savepoint(name = current_savepoint_name) ⇒ Object
- #rollback_db_transaction ⇒ Object
- #rollback_to_savepoint(name = current_savepoint_name) ⇒ Object
- #run_with_isolation_level(isolation_level) ⇒ Object
- #select_rows(sql, name = nil, binds = []) ⇒ Object
- #supports_statement_cache? ⇒ Boolean
- #use_database(database = nil) ⇒ Object
- #user_options ⇒ Object
-
#user_options_dateformat ⇒ Object
TODO: Rails 4 now supports isolation levels.
- #user_options_isolation_level ⇒ Object
- #user_options_language ⇒ Object
Instance Method Details
#activity_stats ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 193 def activity_stats select_all %| SELECT [session_id] = s.session_id, [user_process] = CONVERT(CHAR(1), s.is_user_process), [login] = s.login_name, [database] = ISNULL(db_name(r.database_id), N''), [task_state] = ISNULL(t.task_state, N''), [command] = ISNULL(r.command, N''), [application] = ISNULL(s.program_name, N''), [wait_time_ms] = ISNULL(w.wait_duration_ms, 0), [wait_type] = ISNULL(w.wait_type, N''), [wait_resource] = ISNULL(w.resource_description, N''), [blocked_by] = ISNULL(CONVERT (varchar, w.blocking_session_id), ''), [head_blocker] = CASE -- session has an active request, is blocked, but is blocking others WHEN r2.session_id IS NOT NULL AND r.blocking_session_id = 0 THEN '1' -- session is idle but has an open tran and is blocking others WHEN r.session_id IS NULL THEN '1' ELSE '' END, [total_cpu_ms] = s.cpu_time, [total_physical_io_mb] = (s.reads + s.writes) * 8 / 1024, [memory_use_kb] = s.memory_usage * 8192 / 1024, [open_transactions] = ISNULL(r.open_transaction_count,0), [login_time] = s.login_time, [last_request_start_time] = s.last_request_start_time, [host_name] = ISNULL(s.host_name, N''), [net_address] = ISNULL(c.client_net_address, N''), [execution_context_id] = ISNULL(t.exec_context_id, 0), [request_id] = ISNULL(r.request_id, 0), [workload_group] = N'' FROM sys.dm_exec_sessions s LEFT OUTER JOIN sys.dm_exec_connections c ON (s.session_id = c.session_id) LEFT OUTER JOIN sys.dm_exec_requests r ON (s.session_id = r.session_id) LEFT OUTER JOIN sys.dm_os_tasks t ON (r.session_id = t.session_id AND r.request_id = t.request_id) LEFT OUTER JOIN (SELECT *, ROW_NUMBER() OVER (PARTITION BY waiting_task_address ORDER BY wait_duration_ms DESC) AS row_num FROM sys.dm_os_waiting_tasks ) w ON (t.task_address = w.waiting_task_address) AND w.row_num = 1 LEFT OUTER JOIN sys.dm_exec_requests r2 ON (r.session_id = r2.blocking_session_id) WHERE db_name(r.database_id) = '#{current_database}' ORDER BY s.session_id| end |
#add_limit_offset!(_sql, _options) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 70 def add_limit_offset!(_sql, ) raise NotImplementedError, 'This has been moved to the SQLServerCompiler in Arel.' end |
#begin_db_transaction ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 47 def begin_db_transaction do_execute 'BEGIN TRANSACTION' end |
#case_sensitive_modifier(node) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 78 def case_sensitive_modifier(node) node.acts_like?(:string) ? Arel::Nodes::Bin.new(node) : node end |
#charset ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 288 def charset select_value "SELECT SERVERPROPERTY('SqlCharSetName')" end |
#commit_db_transaction ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 51 def commit_db_transaction disable_auto_reconnect { do_execute 'COMMIT TRANSACTION' } end |
#create_database(database, collation = ) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 276 def create_database(database, collation = @connection_options[:collation]) if collation do_execute "CREATE DATABASE #{quote_database_name(database)} COLLATE #{collation}" else do_execute "CREATE DATABASE #{quote_database_name(database)}" end end |
#create_savepoint(name = current_savepoint_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 59 def create_savepoint(name = current_savepoint_name) disable_auto_reconnect { do_execute "SAVE TRANSACTION #{name}" } end |
#current_database ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 284 def current_database select_value 'SELECT DB_NAME()' end |
#drop_database(database) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 257 def drop_database(database) retry_count = 0 max_retries = 1 begin do_execute "DROP DATABASE #{quote_database_name(database)}" rescue ActiveRecord::StatementInvalid => err if err. =~ /because it is currently in use/i raise if retry_count >= max_retries retry_count += 1 remove_database_connections_and_rollback(database) retry elsif err. =~ /does not exist/i nil else raise end end end |
#empty_insert_statement_value ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 74 def empty_insert_statement_value 'DEFAULT VALUES' end |
#exec_delete(sql, name, binds) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 33 def exec_delete(sql, name, binds) sql << '; SELECT @@ROWCOUNT AS AffectedRows' super.rows.first.first end |
#exec_insert(sql, name, binds, _pk = nil, _sequence_name = nil) ⇒ Object
The abstract adapter ignores the last two parameters also
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 29 def exec_insert(sql, name, binds, _pk = nil, _sequence_name = nil) exec_query sql, name, binds, insert: true end |
#exec_query(sql, name = 'SQL', binds = [], sqlserver_options = {}) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 17 def exec_query(sql, name = 'SQL', binds = [], = {}) if id_insert_table_name = [:insert] ? query_requires_identity_insert?(sql) : nil with_identity_insert_enabled(id_insert_table_name) { do_exec_query(sql, name, binds) } elsif update_sql?(sql) sql = strip_ident_from_update(sql) do_exec_query(sql, name, binds) else do_exec_query(sql, name, binds) end end |
#exec_update(sql, name, binds) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 38 def exec_update(sql, name, binds) sql << '; SELECT @@ROWCOUNT AS AffectedRows' super.rows.first.first end |
#execute(sql, name = nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 9 def execute(sql, name = nil) if id_insert_table_name = query_requires_identity_insert?(sql) with_identity_insert_enabled(id_insert_table_name) { do_execute(sql, name) } else do_execute(sql, name) end end |
#execute_procedure(proc_name, *variables) ⇒ Object
SQLServer Specific ======================================== #
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 84 def execute_procedure(proc_name, *variables) vars = if variables.any? && variables.first.is_a?(Hash) variables.first.map { |k, v| "@#{k} = #{quote(v)}" } else variables.map { |v| quote(v) } end.join(', ') sql = "EXEC #{proc_name} #{vars}".strip name = 'Execute Procedure' log(sql, name) do case @connection_options[:mode] when :dblib result = @connection.execute(sql) result.each(as: :hash, cache_rows: true) do |row| r = row.with_indifferent_access yield(r) if block_given? end result.each.map { |row| row.is_a?(Hash) ? row.with_indifferent_access : row } when :odbc results = [] raw_connection_run(sql) do |handle| get_rows = lambda do rows = handle_to_names_and_values handle, fetch: :all rows.each_with_index { |r, i| rows[i] = r.with_indifferent_access } results << rows end get_rows.call get_rows.call while handle_more_results?(handle) end results.many? ? results : results.first end end end |
#newid_function ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 185 def newid_function select_value 'SELECT NEWID()' end |
#newsequentialid_function ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 189 def newsequentialid_function select_value 'SELECT NEWSEQUENTIALID()' end |
#recreate_database ⇒ Object
SQLServer Specific (Rake/Test Helpers) ==================== #
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 240 def recreate_database remove_database_connections_and_rollback do do_execute "EXEC sp_MSforeachtable 'DROP TABLE ?'" end end |
#recreate_database!(database = nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 246 def recreate_database!(database = nil) current_db = current_database database ||= current_db this_db = database.to_s == current_db do_execute 'USE master' if this_db drop_database(database) create_database(database) ensure use_database(current_db) if this_db end |
#release_savepoint(name = current_savepoint_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 63 def release_savepoint(name = current_savepoint_name) end |
#rollback_db_transaction ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 55 def rollback_db_transaction do_execute 'IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION' end |
#rollback_to_savepoint(name = current_savepoint_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 66 def rollback_to_savepoint(name = current_savepoint_name) disable_auto_reconnect { do_execute "ROLLBACK TRANSACTION #{name}" } end |
#run_with_isolation_level(isolation_level) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 172 def run_with_isolation_level(isolation_level) unless valid_isolation_levels.include?(isolation_level.upcase) raise ArgumentError, "Invalid isolation level, #{isolation_level}. Supported levels include #{valid_isolation_levels.to_sentence}." end initial_isolation_level = || 'READ COMMITTED' do_execute "SET TRANSACTION ISOLATION LEVEL #{isolation_level}" begin yield ensure do_execute "SET TRANSACTION ISOLATION LEVEL #{initial_isolation_level}" end if block_given? end |
#select_rows(sql, name = nil, binds = []) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 5 def select_rows(sql, name = nil, binds = []) do_exec_query sql, name, binds, fetch: :rows end |
#supports_statement_cache? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 43 def supports_statement_cache? true end |
#use_database(database = nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 117 def use_database(database = nil) return if sqlserver_azure? database ||= @connection_options[:database] do_execute "USE #{quote_database_name(database)}" unless database.blank? end |
#user_options ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 123 def return {} if sqlserver_azure? select_rows('dbcc useroptions', 'SCHEMA').reduce(HashWithIndifferentAccess.new) do |values, row| if row.instance_of? Hash set_option = row.values[0].gsub(/\s+/, '_') user_value = row.values[1] elsif row.instance_of? Array set_option = row[0].gsub(/\s+/, '_') user_value = row[1] end values[set_option] = user_value values end end |
#user_options_dateformat ⇒ Object
TODO: Rails 4 now supports isolation levels
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 139 def if sqlserver_azure? select_value 'SELECT [dateformat] FROM [sys].[syslanguages] WHERE [langid] = @@LANGID', 'SCHEMA' else ['dateformat'] end end |
#user_options_isolation_level ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 147 def if sqlserver_azure? sql = %(SELECT CASE [transaction_isolation_level] WHEN 0 THEN NULL WHEN 1 THEN 'READ UNCOMITTED' WHEN 2 THEN 'READ COMITTED' WHEN 3 THEN 'REPEATABLE READ' WHEN 4 THEN 'SERIALIZABLE' WHEN 5 THEN 'SNAPSHOT' END AS [isolation_level] FROM [sys].[dm_exec_sessions] WHERE [session_id] = @@SPID).squish select_value sql, 'SCHEMA' else ['isolation_level'] end end |
#user_options_language ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/database_statements.rb', line 164 def if sqlserver_azure? select_value 'SELECT @@LANGUAGE AS [language]', 'SCHEMA' else ['language'] end end |