C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// import re from ..util import compat from .. import util from .base import compiles, alter_table, format_table_name, RenameTable from .impl import DefaultImpl from sqlalchemy.dialects.postgresql import INTEGER, BIGINT from sqlalchemy import text, Numeric, Column if compat.sqla_08: from sqlalchemy.sql.expression import UnaryExpression else: from sqlalchemy.sql.expression import _UnaryExpression as UnaryExpression import logging log = logging.getLogger(__name__) class PostgresqlImpl(DefaultImpl): __dialect__ = 'postgresql' transactional_ddl = True def prep_table_for_batch(self, table): for constraint in table.constraints: if constraint.name is not None: self.drop_constraint(constraint) def compare_server_default(self, inspector_column, metadata_column, rendered_metadata_default, rendered_inspector_default): # don't do defaults for SERIAL columns if metadata_column.primary_key and \ metadata_column is metadata_column.table._autoincrement_column: return False conn_col_default = rendered_inspector_default if None in (conn_col_default, rendered_metadata_default): return conn_col_default != rendered_metadata_default if metadata_column.server_default is not None and \ isinstance(metadata_column.server_default.arg, compat.string_types) and \ not re.match(r"^'.+'$", rendered_metadata_default) and \ not isinstance(inspector_column.type, Numeric): # don't single quote if the column type is float/numeric, # otherwise a comparison such as SELECT 5 = '5.0' will fail rendered_metadata_default = re.sub( r"^u?'?|'?$", "'", rendered_metadata_default) return not self.connection.scalar( "SELECT %s = %s" % ( conn_col_default, rendered_metadata_default ) ) def autogen_column_reflect(self, inspector, table, column_info): if column_info.get('default') and \ isinstance(column_info['type'], (INTEGER, BIGINT)): seq_match = re.match( r"nextval$'(.+?)'::regclass$", column_info['default']) if seq_match: info = inspector.bind.execute(text( "select c.relname, a.attname " "from pg_class as c join pg_depend d on d.objid=c.oid and " "d.classid='pg_class'::regclass and " "d.refclassid='pg_class'::regclass " "join pg_class t on t.oid=d.refobjid " "join pg_attribute a on a.attrelid=t.oid and " "a.attnum=d.refobjsubid " "where c.relkind='S' and c.relname=:seqname" ), seqname=seq_match.group(1)).first() if info: seqname, colname = info if colname == column_info['name']: log.info( "Detected sequence named '%s' as " "owned by integer column '%s(%s)', " "assuming SERIAL and omitting" % ( seqname, table.name, colname )) # sequence, and the owner is this column, # its a