Module: ActiveRecord::ConnectionAdapters::SQLServer::SchemaStatements
- Included in:
- ActiveRecord::ConnectionAdapters::SQLServerAdapter
- Defined in:
- lib/active_record/connection_adapters/sqlserver/schema_statements.rb
Instance Method Summary collapse
- #change_column(table_name, column_name, type, options = {}) ⇒ Object
- #change_column_default(table_name, column_name, default_or_changes) ⇒ Object
- #change_column_null(table_name, column_name, allow_null, default = nil) ⇒ Object
- #columns(table_name) ⇒ Object
- #columns_for_distinct(columns, orders) ⇒ Object
- #create_table(table_name, comment: nil, **options) ⇒ Object
- #drop_table(table_name, options = {}) ⇒ Object
- #extract_foreign_key_action(action, fk_name) ⇒ Object
- #foreign_keys(table_name) ⇒ Object
- #indexes(table_name, name = nil) ⇒ Object
- #native_database_types ⇒ Object
- #new_column(name, default, sql_type_metadata, null, table_name, default_function = nil, collation = nil, comment = nil, sqlserver_options = {}) ⇒ Object
- #primary_keys(table_name) ⇒ Object
- #primary_keys_select(table_name) ⇒ Object
- #remove_column(table_name, column_name, type = nil, options = {}) ⇒ Object
- #remove_index!(table_name, index_name) ⇒ Object
- #rename_column(table_name, column_name, new_column_name) ⇒ Object
- #rename_index(table_name, old_name, new_name) ⇒ Object
- #rename_table(table_name, new_name) ⇒ Object
- #type_to_sql(type, limit: nil, precision: nil, scale: nil) ⇒ Object
- #update_table_definition(table_name, base) ⇒ Object
Instance Method Details
#change_column(table_name, column_name, type, options = {}) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 131 def change_column(table_name, column_name, type, = {}) sql_commands = [] indexes = [] column_object = schema_cache.columns(table_name).find { |c| c.name.to_s == column_name.to_s } if () || (column_object && column_object.type != type.to_sym) remove_default_constraint(table_name, column_name) indexes = indexes(table_name).select { |index| index.columns.include?(column_name.to_s) } remove_indexes(table_name, column_name) end sql_commands << "UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote_default_expression([:default], column_object)} WHERE #{quote_column_name(column_name)} IS NULL" if ![:null].nil? && [:null] == false && ![:default].nil? sql_commands << "ALTER TABLE #{quote_table_name(table_name)} ALTER COLUMN #{quote_column_name(column_name)} #{type_to_sql(type, limit: [:limit], precision: [:precision], scale: [:scale])}" sql_commands.last << ' NOT NULL' if ![:null].nil? && [:null] == false if .key?(:default) && default_constraint_name(table_name, column_name).present? change_column_default(table_name, column_name, [:default]) elsif () sql_commands << "ALTER TABLE #{quote_table_name(table_name)} ADD CONSTRAINT #{default_constraint_name(table_name, column_name)} DEFAULT #{quote_default_expression([:default], column_object)} FOR #{quote_column_name(column_name)}" end # Add any removed indexes back indexes.each do |index| sql_commands << "CREATE INDEX #{quote_table_name(index.name)} ON #{quote_table_name(table_name)} (#{index.columns.map { |c| quote_column_name(c) }.join(', ')})" end sql_commands.each { |c| do_execute(c) } clear_cache! end |
#change_column_default(table_name, column_name, default_or_changes) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 156 def change_column_default(table_name, column_name, default_or_changes) clear_cache! column = column_for(table_name, column_name) return unless column remove_default_constraint(table_name, column_name) default = extract_new_default_value(default_or_changes) do_execute "ALTER TABLE #{quote_table_name(table_name)} ADD CONSTRAINT #{default_constraint_name(table_name, column_name)} DEFAULT #{quote_default_expression(default, column)} FOR #{quote_column_name(column_name)}" clear_cache! end |
#change_column_null(table_name, column_name, allow_null, default = nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 247 def change_column_null(table_name, column_name, allow_null, default = nil) table_id = SQLServer::Utils.extract_identifiers(table_name) column_id = SQLServer::Utils.extract_identifiers(column_name) column = detect_column_for! table_name, column_name if !allow_null.nil? && allow_null == false && !default.nil? do_execute("UPDATE #{table_id} SET #{column_id}=#{quote(default)} WHERE #{column_id} IS NULL") end sql = "ALTER TABLE #{table_id} ALTER COLUMN #{column_id} #{type_to_sql column.type, limit: column.limit, precision: column.precision, scale: column.scale}" sql << ' NOT NULL' if !allow_null.nil? && allow_null == false do_execute sql end |
#columns(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 55 def columns(table_name) return [] if table_name.blank? column_definitions(table_name).map do |ci| = ci.slice :ordinal_position, :is_primary, :is_identity = ci[:type], new_column( ci[:name], ci[:default_value], , ci[:null], ci[:table_name], ci[:default_function], ci[:collation], nil, ) end end |
#columns_for_distinct(columns, orders) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 234 def columns_for_distinct(columns, orders) order_columns = orders.reject(&:blank?).map{ |s| s = s.to_sql unless s.is_a?(String) s.gsub(/\s+(?:ASC|DESC)\b/i, '') .gsub(/\s+NULLS\s+(?:FIRST|LAST)\b/i, '') }.reject(&:blank?).map.with_index { |column, i| "#{column} AS alias_#{i}" } [super, *order_columns].join(', ') end |
#create_table(table_name, comment: nil, **options) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 10 def create_table(table_name, comment: nil, **) res = super clear_cache! res end |
#drop_table(table_name, options = {}) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 16 def drop_table(table_name, = {}) # Mimic CASCADE option as best we can. if [:force] == :cascade execute_procedure(:sp_fkeys, pktable_name: table_name).each do |fkdata| fktable = fkdata['FKTABLE_NAME'] fkcolmn = fkdata['FKCOLUMN_NAME'] pktable = fkdata['PKTABLE_NAME'] pkcolmn = fkdata['PKCOLUMN_NAME'] remove_foreign_key fktable, name: fkdata['FK_NAME'] do_execute "DELETE FROM #{quote_table_name(fktable)} WHERE #{quote_column_name(fkcolmn)} IN ( SELECT #{quote_column_name(pkcolmn)} FROM #{quote_table_name(pktable)} )" end end if [:if_exists] && @version_year < 2016 execute "IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = #{quote(table_name)}) DROP TABLE #{quote_table_name(table_name)}" else super end end |
#extract_foreign_key_action(action, fk_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 201 def extract_foreign_key_action(action, fk_name) case select_value("SELECT #{action}_referential_action_desc FROM sys.foreign_keys WHERE name = '#{fk_name}'") when 'CASCADE' then :cascade when 'SET_NULL' then :nullify end end |
#foreign_keys(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 184 def foreign_keys(table_name) identifier = SQLServer::Utils.extract_identifiers(table_name) fk_info = execute_procedure :sp_fkeys, nil, identifier.schema, nil, identifier.object, identifier.schema fk_info.map do |row| from_table = identifier.object to_table = row['PKTABLE_NAME'] = { name: row['FK_NAME'], column: row['FKCOLUMN_NAME'], primary_key: row['PKCOLUMN_NAME'], on_update: extract_foreign_key_action('update', row['FK_NAME']), on_delete: extract_foreign_key_action('delete', row['FK_NAME']) } ForeignKeyDefinition.new from_table, to_table, end end |
#indexes(table_name, name = nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 35 def indexes(table_name, name = nil) data = (select("EXEC sp_helpindex #{quote(table_name)}", name) || []) rescue [] # JDBC returns nil instead of an array or erring out for no results data.reduce([]) do |indexes, index| index = index.with_indifferent_access if index[:index_description] =~ /primary key/ indexes else name = index[:index_name] unique = index[:index_description] =~ /unique/ where = select_value("SELECT [filter_definition] FROM sys.indexes WHERE name = #{quote(name)}") columns = index[:index_keys].split(',').map do |column| column.strip! column.gsub! '(-)', '' if column.ends_with?('(-)') column end indexes << IndexDefinition.new(table_name, name, unique, columns, nil, nil, where) end end end |
#native_database_types ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 6 def native_database_types @native_database_types ||= initialize_native_database_types.freeze end |
#new_column(name, default, sql_type_metadata, null, table_name, default_function = nil, collation = nil, comment = nil, sqlserver_options = {}) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 74 def new_column(name, default, , null, table_name, default_function = nil, collation = nil, comment = nil, = {}) SQLServerColumn.new( name, default, , null, table_name, default_function, collation, comment, ) end |
#primary_keys(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 87 def primary_keys(table_name) primaries = primary_keys_select(table_name) primaries.present? ? primaries : identity_columns(table_name).map(&:name) end |
#primary_keys_select(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 92 def primary_keys_select(table_name) identifier = database_prefix_identifier(table_name) database = identifier.fully_qualified_database_quoted sql = %{ SELECT KCU.COLUMN_NAME AS [name] FROM #{database}.INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS KCU LEFT OUTER JOIN #{database}.INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS TC ON KCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME AND KCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME AND KCU.CONSTRAINT_CATALOG = TC.CONSTRAINT_CATALOG AND KCU.CONSTRAINT_SCHEMA = TC.CONSTRAINT_SCHEMA AND TC.CONSTRAINT_TYPE = N'PRIMARY KEY' WHERE KCU.TABLE_NAME = #{prepared_statements ? COLUMN_DEFINITION_BIND_STRING_0 : quote(identifier.object)} AND KCU.TABLE_SCHEMA = #{identifier.schema.blank? ? 'schema_name()' : (prepared_statements ? COLUMN_DEFINITION_BIND_STRING_1 : quote(identifier.schema))} AND TC.CONSTRAINT_TYPE = N'PRIMARY KEY' ORDER BY KCU.ORDINAL_POSITION ASC }.gsub(/[[:space:]]/, ' ') binds = [] if prepared_statements nv128 = SQLServer::Type::UnicodeVarchar.new limit: 128 binds << Relation::QueryAttribute.new('TABLE_NAME', identifier.object, nv128) binds << Relation::QueryAttribute.new('TABLE_SCHEMA', identifier.schema, nv128) unless identifier.schema.blank? end sp_executesql(sql, 'SCHEMA', binds).map { |r| r['name'] } end |
#remove_column(table_name, column_name, type = nil, options = {}) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 123 def remove_column(table_name, column_name, type = nil, = {}) raise ArgumentError.new('You must specify at least one column name. Example: remove_column(:people, :first_name)') if column_name.is_a? Array remove_check_constraints(table_name, column_name) remove_default_constraint(table_name, column_name) remove_indexes(table_name, column_name) do_execute "ALTER TABLE #{quote_table_name(table_name)} DROP COLUMN #{quote_column_name(column_name)}" end |
#remove_index!(table_name, index_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 180 def remove_index!(table_name, index_name) do_execute "DROP INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)}" end |
#rename_column(table_name, column_name, new_column_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 166 def rename_column(table_name, column_name, new_column_name) clear_cache! identifier = SQLServer::Utils.extract_identifiers("#{table_name}.#{column_name}") execute_procedure :sp_rename, identifier.quoted, new_column_name, 'COLUMN' rename_column_indexes(table_name, column_name, new_column_name) clear_cache! end |
#rename_index(table_name, old_name, new_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 174 def rename_index(table_name, old_name, new_name) raise ArgumentError, "Index name '#{new_name}' on table '#{table_name}' is too long; the limit is #{allowed_index_name_length} characters" if new_name.length > allowed_index_name_length identifier = SQLServer::Utils.extract_identifiers("#{table_name}.#{old_name}") execute_procedure :sp_rename, identifier.quoted, new_name, 'INDEX' end |
#rename_table(table_name, new_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 118 def rename_table(table_name, new_name) do_execute "EXEC sp_rename '#{table_name}', '#{new_name}'" rename_table_indexes(table_name, new_name) end |
#type_to_sql(type, limit: nil, precision: nil, scale: nil) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver/schema_statements.rb', line 208 def type_to_sql(type, limit: nil, precision: nil, scale: nil, **) type_limitable = %w(string integer float char nchar varchar nvarchar).include?(type.to_s) limit = nil unless type_limitable case type.to_s when 'integer' case limit when 1..2 then 'smallint' when 3..4, nil then 'integer' when 5..8 then 'bigint' else raise(ActiveRecordError, "No integer type has byte size #{limit}. Use a numeric with precision 0 instead.") end when 'datetime2' column_type_sql = super if precision if (0..7) === precision column_type_sql << "(#{precision})" else raise(ActiveRecordError, "The dattime2 type has precision of #{precision}. The allowed range of precision is from 0 to 7") end end column_type_sql else super end end |