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# -*- coding: utf-8 -*-
from __future__ import absolute_import
from . import get_db_type
SQL = {
"sqlite": [
# No 'ALTER TABLE DROP COLUMN' in SQLite
'ALTER TABLE "list" ADD COLUMN subject_prefix TEXT;',
'UPDATE "list" SET subject_prefix = \'[\' || display_name || \']\';'
],
"postgres": [
'ALTER TABLE "list" DROP COLUMN "description";',
'ALTER TABLE "list" ADD COLUMN subject_prefix TEXT;',
'UPDATE "list" SET subject_prefix = \'[\' || display_name || \']\';',
],
"mysql": [
'ALTER TABLE `list` DROP COLUMN `description`;',
'ALTER TABLE `list` ADD COLUMN subject_prefix TEXT;',
'UPDATE `list`" SET subject_prefix = CONCAT(\'[\', display_name, \']\');',
],
}
def apply(store):
"""Add the subject_prefix column and delete the description column"""
dbtype = get_db_type(store)
for statement in SQL[dbtype]:
store.execute(statement)
store.commit()
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