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schema-evolution:
added sqlite3 unit tests greatly expanded the number of evolutions supported by the sqlite3 backend changed all get_<evolution_type> calls to return lists of strings fixed sqlite3 get_indexes introspection git-svn-id: http://code.djangoproject.com/svn/django/branches/schema-evolution@5787 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Derek Anderson
parent
38c1cd721d
commit
fd77e42509
@ -569,7 +569,7 @@ def get_sql_evolution_check_for_new_fields(klass, new_table_name):
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data_type = f.get_internal_type()
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col_type = data_types[data_type]
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if col_type is not None:
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output.append( backend.get_add_column_sql( db_table, f.column, style.SQL_COLTYPE(col_type % rel_field.__dict__), f.null, f.unique, f.primary_key ) )
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output.extend( backend.get_add_column_sql( db_table, f.column, style.SQL_COLTYPE(col_type % rel_field.__dict__), f.null, f.unique, f.primary_key ) )
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return output
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def get_sql_evolution_check_for_changed_model_name(klass):
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@ -580,9 +580,9 @@ def get_sql_evolution_check_for_changed_model_name(klass):
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if klass._meta.db_table in table_list:
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return [], None
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if klass._meta.aka in table_list:
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return [ backend.get_change_table_name_sql( klass._meta.db_table, klass._meta.aka) ], klass._meta.aka
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return backend.get_change_table_name_sql( klass._meta.db_table, klass._meta.aka), klass._meta.aka
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elif len(set(klass._meta.aka) & set(table_list))==1:
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return [ backend.get_change_table_name_sql( klass._meta.db_table, klass._meta.aka[0]) ], klass._meta.aka[0]
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return backend.get_change_table_name_sql( klass._meta.db_table, klass._meta.aka[0]), klass._meta.aka[0]
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else:
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return [], None
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@ -608,14 +608,12 @@ def get_sql_evolution_check_for_changed_field_name(klass, new_table_name):
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data_type = f.get_internal_type()
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col_type = data_types[data_type]
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if col_type is not None:
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field_output = []
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col_def = style.SQL_COLTYPE(col_type % rel_field.__dict__) +' '+ style.SQL_KEYWORD('%sNULL' % (not f.null and 'NOT ' or ''))
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if f.unique:
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col_def += style.SQL_KEYWORD(' UNIQUE')
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if f.primary_key:
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col_def += style.SQL_KEYWORD(' PRIMARY KEY')
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field_output.append( backend.get_change_column_name_sql( klass._meta.db_table, introspection.get_indexes(cursor,db_table), backend.quote_name(old_col), backend.quote_name(f.column), col_def ) )
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output.append(' '.join(field_output))
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output.extend( backend.get_change_column_name_sql( klass._meta.db_table, introspection.get_indexes(cursor,db_table), old_col, f.column, col_def ) )
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return output
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def get_sql_evolution_check_for_changed_field_flags(klass, new_table_name):
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@ -666,7 +664,7 @@ def get_sql_evolution_check_for_changed_field_flags(klass, new_table_name):
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# col_def += ' '+ style.SQL_KEYWORD('UNIQUE')
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# if f.primary_key:
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# col_def += ' '+ style.SQL_KEYWORD('PRIMARY KEY')
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output.append( backend.get_change_column_def_sql( db_table, cf, col_type_def, f.null, f.unique, f.primary_key ) )
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output.extend( backend.get_change_column_def_sql( db_table, cf, col_type_def, f.null, f.unique, f.primary_key ) )
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#print db_table, cf, f.maxlength, introspection.get_known_column_flags(cursor, db_table, cf)
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return output
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@ -244,7 +244,7 @@ def get_sql_sequence_reset(style, model_list):
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return []
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def get_change_table_name_sql( table_name, old_table_name ):
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return 'ALTER TABLE '+ quote_name(old_table_name) +' RENAME TO '+ quote_name(table_name) + ';'
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return ['ALTER TABLE '+ quote_name(old_table_name) +' RENAME TO '+ quote_name(table_name) + ';']
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def get_change_column_name_sql( table_name, indexes, old_col_name, new_col_name, col_def ):
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# mysql doesn't support column renames (AFAIK), so we fake it
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@ -254,7 +254,7 @@ def get_change_column_name_sql( table_name, indexes, old_col_name, new_col_name,
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if indexes[key]['primary_key']: pk_name = key
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output = []
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' CHANGE COLUMN '+ quote_name(old_col_name) +' '+ quote_name(new_col_name) +' '+ col_def + ';' )
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return '\n'.join(output)
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return output
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def get_change_column_def_sql( table_name, col_name, col_type, null, unique, primary_key ):
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output = []
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@ -264,7 +264,7 @@ def get_change_column_def_sql( table_name, col_name, col_type, null, unique, pri
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if primary_key:
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col_def += ' '+ 'PRIMARY KEY'
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' MODIFY COLUMN '+ quote_name(col_name) +' '+ col_def + ';' )
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return '\n'.join(output)
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return output
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def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_key ):
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output = []
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@ -280,7 +280,7 @@ def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_ke
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if primary_key:
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field_output.append(('PRIMARY KEY'))
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output.append(' '.join(field_output) + ';')
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return '\n'.join(output)
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return output
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def get_drop_column_sql( table_name, col_name ):
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output = []
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@ -286,7 +286,7 @@ def typecast_string(s):
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def get_change_table_name_sql( table_name, old_table_name ):
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output = []
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output.append('ALTER TABLE '+ quote_name(old_table_name) +' RENAME TO '+ quote_name(table_name) + ';')
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return '\n'.join(output)
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return output
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def get_change_column_name_sql( table_name, indexes, old_col_name, new_col_name, col_def ):
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# TODO: only supports a single primary key so far
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@ -295,7 +295,7 @@ def get_change_column_name_sql( table_name, indexes, old_col_name, new_col_name,
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if indexes[key]['primary_key']: pk_name = key
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output = []
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' RENAME COLUMN '+ quote_name(old_col_name) +' TO '+ quote_name(new_col_name) +';' )
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return '\n'.join(output)
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return output
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def get_change_column_def_sql( table_name, col_name, col_type, null, unique, primary_key ):
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output = []
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@ -308,7 +308,7 @@ def get_change_column_def_sql( table_name, col_name, col_type, null, unique, pri
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if unique:
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' ADD CONSTRAINT '+ table_name +'_'+ col_name +'_unique_constraint UNIQUE('+ col_name +');' )
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return '\n'.join(output)
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return output
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def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_key ):
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output = []
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@ -317,7 +317,7 @@ def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_ke
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' ALTER COLUMN '+ quote_name(col_name) +' SET NOT NULL;' )
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if unique:
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' ADD CONSTRAINT '+ table_name +'_'+ col_name +'_unique_constraint UNIQUE('+ col_name +');' )
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return '\n'.join(output)
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return output
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def get_drop_column_sql( table_name, col_name ):
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output = []
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@ -217,22 +217,61 @@ def _sqlite_regexp(re_pattern, re_string):
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return False
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def get_change_table_name_sql( table_name, old_table_name ):
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return 'ALTER TABLE '+ quote_name(old_table_name) +' RENAME TO '+ quote_name(table_name) + ';'
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return ['ALTER TABLE '+ quote_name(old_table_name) +' RENAME TO '+ quote_name(table_name) + ';']
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def get_change_column_name_sql( table_name, indexes, old_col_name, new_col_name, col_def ):
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# sqlite doesn't support column renames, so we fake it
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# TODO: only supports a single primary key so far
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pk_name = None
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for key in indexes.keys():
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if indexes[key]['primary_key']: pk_name = key
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model = get_model_from_table_name(table_name)
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output = []
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output.append( 'ALTER TABLE '+ quote_name(table_name) +' ADD COLUMN '+ quote_name(new_col_name) +' '+ col_def + ';' )
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output.append( 'UPDATE '+ quote_name(table_name) +' SET '+ new_col_name +' = '+ old_col_name +' WHERE '+ pk_name +'=(select '+ pk_name +' from '+ table_name +');' )
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output.append( '-- FYI: sqlite does not support deleting columns, so '+ quote_name(old_col_name) +' remains as cruft' )
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return '\n'.join(output)
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output.append( '-- FYI: sqlite does not support renaming columns, so we create a new '+ quote_name(table_name) +' and delete the old (ie, this could take a while)' )
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tmp_table_name = table_name + '_1337_TMP' # unlikely to produce a namespace conflict
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output.extend( get_change_table_name_sql( tmp_table_name, table_name ) )
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output.extend( management._get_sql_model_create(model, set())[0] )
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old_cols = []
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for f in model._meta.fields:
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if f.column != new_col_name:
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old_cols.append( quote_name(f.column) )
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else:
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old_cols.append( quote_name(old_col_name) )
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output.append( 'INSERT INTO '+ quote_name(table_name) +' SELECT '+ ','.join(old_cols) +' FROM '+ quote_name(tmp_table_name) +';' )
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output.append( 'DROP TABLE '+ quote_name(tmp_table_name) +';' )
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return output
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def get_change_column_def_sql( table_name, col_name, col_type, null, unique, primary_key ):
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# sqlite doesn't support column modifications, so we fake it
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model = get_model_from_table_name(table_name)
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if not model: return ['-- model not found']
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output = []
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output.append( '-- FYI: sqlite does not support changing columns, so we create a new '+ quote_name(table_name) +' and delete the old (ie, this could take a while)' )
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tmp_table_name = table_name + '_1337_TMP' # unlikely to produce a namespace conflict
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output.extend( get_change_table_name_sql( tmp_table_name, table_name ) )
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output.extend( management._get_sql_model_create(model, set())[0] )
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old_cols = []
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for f in model._meta.fields:
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old_cols.append( quote_name(f.column) )
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output.append( 'INSERT INTO '+ quote_name(table_name) +' SELECT '+ ','.join(old_cols) +' FROM '+ quote_name(tmp_table_name) +';' )
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output.append( 'DROP TABLE '+ quote_name(tmp_table_name) +';' )
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return output
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output = []
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col_def = col_type +' '+ ('%sNULL' % (not null and 'NOT ' or ''))
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if unique or primary_key:
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@ -241,7 +280,7 @@ def get_change_column_def_sql( table_name, col_name, col_type, null, unique, pri
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col_def += ' '+ 'PRIMARY KEY'
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# TODO: fake via renaming the table, building a new one and deleting the old
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output.append('-- sqlite does not support column modifications '+ quote_name(table_name) +'.'+ quote_name(col_name) +' to '+ col_def)
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return '\n'.join(output)
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return output
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def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_key ):
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output = []
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@ -257,14 +296,14 @@ def get_add_column_sql( table_name, col_name, col_type, null, unique, primary_ke
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if primary_key:
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field_output.append(('PRIMARY KEY'))
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output.append(' '.join(field_output) + ';')
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return '\n'.join(output)
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return output
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def get_drop_column_sql( table_name, col_name ):
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model = get_model_from_table_name(table_name)
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output = []
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output.append( '-- FYI: sqlite does not support deleting columns, so we create a new '+ quote_name(col_name) +' and delete the old (ie, this could take a while)' )
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tmp_table_name = table_name + '_1337_TMP' # unlikely to produce a namespace conflict
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output.append( get_change_table_name_sql( tmp_table_name, table_name ) )
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output.extend( get_change_table_name_sql( tmp_table_name, table_name ) )
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output.extend( management._get_sql_model_create(model, set())[0] )
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new_cols = []
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for f in model._meta.fields:
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@ -26,9 +26,6 @@ def get_indexes(cursor, table_name):
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'unique': boolean representing whether it's a unique index}
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"""
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indexes = {}
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for info in _table_info(cursor, table_name):
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indexes[info['name']] = {'primary_key': info['pk'] != 0,
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'unique': False}
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cursor.execute('PRAGMA index_list(%s)' % quote_name(table_name))
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# seq, name, unique
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for index, unique in [(field[1], field[2]) for field in cursor.fetchall()]:
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@ -36,11 +33,16 @@ def get_indexes(cursor, table_name):
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continue
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cursor.execute('PRAGMA index_info(%s)' % quote_name(index))
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info = cursor.fetchall()
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# Skip indexes across multiple fields
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if len(info) != 1:
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continue
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name = info[0][2] # seqno, cid, name
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indexes[name]['unique'] = True
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for x in info:
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name = x[2] # seqno, cid, name
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cursor.execute('PRAGMA table_info(%s)' % quote_name(table_name))
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for row in cursor.fetchall():
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if row[1]==name:
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indexes[name] = {'primary_key': False, 'unique': False}
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if row[2]=='integer':
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indexes[name]['primary_key'] = True
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else:
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indexes[name]['unique'] = True
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return indexes
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def get_columns(cursor, table_name):
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@ -44,8 +44,8 @@ if settings.DATABASE_ENGINE == 'mysql':
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# delete a column, so it looks like we've recently added a field
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>>> sql = backend.get_drop_column_sql( 'schema_evolution_person', 'gender' )
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>>> print sql
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ALTER TABLE `schema_evolution_person` DROP COLUMN `gender`;
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>>> cursor.execute(sql)
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['ALTER TABLE `schema_evolution_person` DROP COLUMN `gender`;']
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>>> for s in sql: cursor.execute(s)
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0L
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>>> management.get_sql_evolution(app)
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['ALTER TABLE `schema_evolution_person` ADD COLUMN `gender` varchar(1) NOT NULL;']
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@ -58,7 +58,7 @@ ALTER TABLE `schema_evolution_person` DROP COLUMN `gender`;
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>>> cursor.execute('ALTER TABLE `schema_evolution_person` ADD COLUMN `gender_nothere` varchar(1) NOT NULL;')
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0L
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>>> management.get_sql_evolution(app)
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['-- warning: as the following may cause data loss, it/they must be run manually', u'-- ALTER TABLE `schema_evolution_person` DROP COLUMN `gender_nothere`;', '-- end warning']
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['-- warning: the following may cause data loss', u'ALTER TABLE `schema_evolution_person` DROP COLUMN `gender_nothere`;', '-- end warning']
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# reset the db
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>>> cursor.execute('DROP TABLE schema_evolution_person;'); cursor.execute(create_table_sql[0])
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@ -103,23 +103,23 @@ if settings.DATABASE_ENGINE == 'postgresql':
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[]
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# delete a column, so it looks like we've recently added a field
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>>> cursor.execute( backend.get_drop_column_sql( 'schema_evolution_person', 'gender' ) )
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>>> for sql in backend.get_drop_column_sql( 'schema_evolution_person', 'gender' ): cursor.execute(sql)
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>>> management.get_sql_evolution(app)
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['ALTER TABLE "schema_evolution_person" ADD COLUMN "gender" varchar(1);\\nALTER TABLE "schema_evolution_person" ALTER COLUMN "gender" SET NOT NULL;']
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['ALTER TABLE "schema_evolution_person" ADD COLUMN "gender" varchar(1);', 'ALTER TABLE "schema_evolution_person" ALTER COLUMN "gender" SET NOT NULL;']
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# reset the db
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>>> cursor.execute('DROP TABLE schema_evolution_person;'); cursor.execute(create_table_sql[0])
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# add a column, so it looks like we've recently deleted a field
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>>> cursor.execute( backend.get_add_column_sql( 'schema_evolution_person', 'gender_nothere', 'varchar(1)', True, False, False ) )
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>>> for sql in backend.get_add_column_sql( 'schema_evolution_person', 'gender_nothere', 'varchar(1)', True, False, False ): cursor.execute(sql)
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>>> management.get_sql_evolution(app)
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['-- warning: as the following may cause data loss, it/they must be run manually', u'-- ALTER TABLE "schema_evolution_person" DROP COLUMN "gender_nothere";', '-- end warning']
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['-- warning: the following may cause data loss', u'ALTER TABLE "schema_evolution_person" DROP COLUMN "gender_nothere";', '-- end warning']
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# reset the db
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>>> cursor.execute('DROP TABLE schema_evolution_person;'); cursor.execute(create_table_sql[0])
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# rename column, so it looks like we've recently renamed a field
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>>> cursor.execute( backend.get_change_column_name_sql( 'schema_evolution_person', {}, 'gender2', 'gender_old', 'varchar(1)' ) )
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>>> for sql in backend.get_change_column_name_sql( 'schema_evolution_person', {}, 'gender2', 'gender_old', 'varchar(1)' ): cursor.execute(sql)
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>>> management.get_sql_evolution(app)
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['ALTER TABLE "schema_evolution_person" RENAME COLUMN "gender_old" TO "gender2";']
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@ -127,7 +127,7 @@ if settings.DATABASE_ENGINE == 'postgresql':
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>>> cursor.execute('DROP TABLE schema_evolution_person;'); cursor.execute(create_table_sql[0])
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# rename table, so it looks like we've recently renamed a model
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>>> cursor.execute( backend.get_change_table_name_sql( 'schema_evolution_personold', 'schema_evolution_person' ) )
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>>> for sql in backend.get_change_table_name_sql( 'schema_evolution_personold', 'schema_evolution_person' ): cursor.execute(sql)
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>>> management.get_sql_evolution(app)
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['ALTER TABLE "schema_evolution_personold" RENAME TO "schema_evolution_person";']
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@ -135,9 +135,9 @@ if settings.DATABASE_ENGINE == 'postgresql':
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>>> cursor.execute(create_table_sql[0])
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# change column flags, so it looks like we've recently changed a column flag
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>>> cursor.execute( backend.get_change_column_def_sql( 'schema_evolution_person', 'name', 'varchar(10)', True, False, False ) )
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>>> for sql in backend.get_change_column_def_sql( 'schema_evolution_person', 'name', 'varchar(10)', True, False, False ): cursor.execute(sql)
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>>> management.get_sql_evolution(app)
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['ALTER TABLE "schema_evolution_person" ADD COLUMN "name_tmp" varchar(20);\\nUPDATE "schema_evolution_person" SET "name_tmp" = "name";\\nALTER TABLE "schema_evolution_person" DROP COLUMN "name";\\nALTER TABLE "schema_evolution_person" RENAME COLUMN "name_tmp" TO "name";\\nALTER TABLE "schema_evolution_person" ALTER COLUMN "name" SET NOT NULL;']
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['ALTER TABLE "schema_evolution_person" ADD COLUMN "name_tmp" varchar(20);', 'UPDATE "schema_evolution_person" SET "name_tmp" = "name";', 'ALTER TABLE "schema_evolution_person" DROP COLUMN "name";', 'ALTER TABLE "schema_evolution_person" RENAME COLUMN "name_tmp" TO "name";', 'ALTER TABLE "schema_evolution_person" ALTER COLUMN "name" SET NOT NULL;']
|
||||
|
||||
"""
|
||||
|
||||
@ -171,8 +171,23 @@ if settings.DATABASE_ENGINE == 'sqlite3':
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute( 'CREATE TABLE "schema_evolution_person" ( "id" integer NOT NULL UNIQUE PRIMARY KEY, "name" varchar(20) NOT NULL, "gender" varchar(1) NOT NULL, "gender2" varchar(1) NOT NULL, "gender_new" varchar(1) NOT NULL );' ).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> management.get_sql_evolution(app)
|
||||
>>> cursor.execute( 'insert into "schema_evolution_person" values (1,2,3,4,5);' ).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> sql = management.get_sql_evolution(app)
|
||||
>>> print sql
|
||||
['-- warning: the following may cause data loss', u'-- FYI: sqlite does not support deleting columns, so we create a new "gender_new" and delete the old (ie, this could take a while)', 'ALTER TABLE "schema_evolution_person" RENAME TO "schema_evolution_person_1337_TMP";', 'CREATE TABLE "schema_evolution_person" (\\n "id" integer NOT NULL UNIQUE PRIMARY KEY,\\n "name" varchar(20) NOT NULL,\\n "gender" varchar(1) NOT NULL,\\n "gender2" varchar(1) NOT NULL\\n)\\n;', 'INSERT INTO "schema_evolution_person" SELECT "id","name","gender","gender2" FROM "schema_evolution_person_1337_TMP";', 'DROP TABLE "schema_evolution_person_1337_TMP";', '-- end warning']
|
||||
>>> for s in sql: cursor.execute(s).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute('select * from "schema_evolution_person";').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.fetchall()[0]
|
||||
(1, u'2', u'3', u'4')
|
||||
|
||||
# reset the db
|
||||
>>> cursor.execute('DROP TABLE schema_evolution_person;').__class__
|
||||
@ -180,30 +195,53 @@ if settings.DATABASE_ENGINE == 'sqlite3':
|
||||
>>> cursor.execute(create_table_sql[0]).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
|
||||
"""
|
||||
|
||||
crap = """
|
||||
|
||||
# rename column, so it looks like we've recently renamed a field
|
||||
>>> cursor.execute( backend.get_change_column_name_sql( 'schema_evolution_person', {}, 'gender2', 'gender_old', 'varchar(1)' ) )
|
||||
>>> management.get_sql_evolution(app)
|
||||
['ALTER TABLE "schema_evolution_person" RENAME COLUMN "gender_old" TO "gender2";']
|
||||
>>> cursor.execute('DROP TABLE "schema_evolution_person"').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute('').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute('CREATE TABLE "schema_evolution_person" ("id" integer NOT NULL UNIQUE PRIMARY KEY, "name" varchar(20) NOT NULL, "gender" varchar(1) NOT NULL, "gender_old" varchar(1) NOT NULL );').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute( 'insert into "schema_evolution_person" values (1,2,3,4);' ).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> sql = management.get_sql_evolution(app)
|
||||
>>> print sql
|
||||
['-- FYI: sqlite does not support renaming columns, so we create a new "schema_evolution_person" and delete the old (ie, this could take a while)', 'ALTER TABLE "schema_evolution_person" RENAME TO "schema_evolution_person_1337_TMP";', 'CREATE TABLE "schema_evolution_person" (\\n "id" integer NOT NULL UNIQUE PRIMARY KEY,\\n "name" varchar(20) NOT NULL,\\n "gender" varchar(1) NOT NULL,\\n "gender2" varchar(1) NOT NULL\\n)\\n;', 'INSERT INTO "schema_evolution_person" SELECT "id","name","gender","gender_old" FROM "schema_evolution_person_1337_TMP";', 'DROP TABLE "schema_evolution_person_1337_TMP";']
|
||||
>>> for s in sql: cursor.execute(s).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute('select * from "schema_evolution_person";').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.fetchall()[0]
|
||||
(1, u'2', u'3', u'4')
|
||||
|
||||
# reset the db
|
||||
>>> cursor.execute('DROP TABLE schema_evolution_person;'); cursor.execute(create_table_sql[0])
|
||||
>>> cursor.execute('DROP TABLE schema_evolution_person;').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute(create_table_sql[0]).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
|
||||
# rename table, so it looks like we've recently renamed a model
|
||||
>>> cursor.execute( backend.get_change_table_name_sql( 'schema_evolution_personold', 'schema_evolution_person' ) )
|
||||
>>> for sql in backend.get_change_table_name_sql( 'schema_evolution_personold', 'schema_evolution_person' ): cursor.execute(sql).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> management.get_sql_evolution(app)
|
||||
['ALTER TABLE "schema_evolution_personold" RENAME TO "schema_evolution_person";']
|
||||
|
||||
# reset the db
|
||||
>>> cursor.execute(create_table_sql[0])
|
||||
>>> cursor.execute('DROP TABLE schema_evolution_personold;').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute(create_table_sql[0]).__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
|
||||
# change column flags, so it looks like we've recently changed a column flag
|
||||
>>> cursor.execute( backend.get_change_column_def_sql( 'schema_evolution_person', 'name', 'varchar(10)', True, False, False ) )
|
||||
>>> cursor.execute('DROP TABLE "schema_evolution_person";').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> cursor.execute('CREATE TABLE "schema_evolution_person" ( "id" integer NOT NULL UNIQUE PRIMARY KEY, "name" varchar(20) NOT NULL, "gender" varchar(1) NOT NULL, "gender2" varchar(1) NULL);').__class__
|
||||
<class 'django.db.backends.sqlite3.base.SQLiteCursorWrapper'>
|
||||
>>> management.get_sql_evolution(app)
|
||||
['ALTER TABLE "schema_evolution_person" ADD COLUMN "name_tmp" varchar(20);\\nUPDATE "schema_evolution_person" SET "name_tmp" = "name";\\nALTER TABLE "schema_evolution_person" DROP COLUMN "name";\\nALTER TABLE "schema_evolution_person" RENAME COLUMN "name_tmp" TO "name";\\nALTER TABLE "schema_evolution_person" ALTER COLUMN "name" SET NOT NULL;']
|
||||
|
||||
['-- FYI: sqlite does not support changing columns, so we create a new "schema_evolution_person" and delete the old (ie, this could take a while)', 'ALTER TABLE "schema_evolution_person" RENAME TO "schema_evolution_person_1337_TMP";', 'CREATE TABLE "schema_evolution_person" (\\n "id" integer NOT NULL UNIQUE PRIMARY KEY,\\n "name" varchar(20) NOT NULL,\\n "gender" varchar(1) NOT NULL,\\n "gender2" varchar(1) NOT NULL\\n)\\n;', 'INSERT INTO "schema_evolution_person" SELECT "id","name","gender","gender2" FROM "schema_evolution_person_1337_TMP";', 'DROP TABLE "schema_evolution_person_1337_TMP";']
|
||||
"""
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user