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migrate data before adding unique index

This commit is contained in:
j 2016-01-17 14:44:30 +05:30
parent 4fe8443c35
commit 7e2d6728aa
1 changed files with 39 additions and 29 deletions
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68
oml/setup.py
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@ -416,32 +416,8 @@ def upgrade_db(old, new=None):
if not len(l.items):
l.remove()
if old <= '20160107-509-e0857fc':
with db.session() as session:
sql = "SELECT COUNT(*) AS c,list_id,item_id FROM listitem GROUP BY list_id, item_id HAVING c>1"
doubles = [r for r in session.execute(sql)]
for r in doubles:
params = {'list_id': r[1], 'item_id': r[2]}
sql = "DELETE FROM listitem WHERE list_id = :list_id AND item_id = :item_id"
session.execute(sql, params)
sql = "INSERT INTO listitem (list_id, item_id) VALUES (:list_id, :item_id)"
session.execute(sql, params)
session.commit()
sql = 'CREATE UNIQUE INDEX IF NOT EXISTS listitem_index on listitem(list_id,item_id)'
session.execute(sql)
session.commit()
sql = "SELECT COUNT(*) AS c,user_id,item_id FROM useritem GROUP BY user_id, item_id HAVING c>1"
doubles = [r for r in session.execute(sql)]
for r in doubles:
params = {'user_id': r[1], 'item_id': r[2]}
sql = "DELETE FROM useritem WHERE user_id = :user_id AND item_id = :item_id"
session.execute(sql, params)
sql = "INSERT INTO useritem (user_id, item_id) VALUES (:user_id, :item_id)"
session.execute(sql, params)
session.commit()
sql = 'CREATE UNIQUE INDEX IF NOT EXISTS useritem_index on useritem(user_id,item_id)'
session.execute(sql)
session.commit()
add_useritem_index()
add_listitem_index()
if old <= '20160111-603-90648f9' and not new:
if not db.table_exists('user_metadata'):
run_sql('''CREATE TABLE user_metadata (
@ -499,8 +475,8 @@ def update_database():
'CREATE INDEX ix_find_key ON find ("key")',
'CREATE INDEX ix_useritem_user ON useritem ("user_id")',
'CREATE INDEX ix_user_metadata_data_hash ON user_metadata (data_hash)',
'CREATE UNIQUE INDEX listitem_index on listitem(list_id,item_id)',
'CREATE UNIQUE INDEX useritem_index on useritem(user_id,item_id)',
'CREATE UNIQUE INDEX listitem_index on listitem(list_id, item_id)',
'CREATE UNIQUE INDEX useritem_index on useritem(user_id, item_id)',
'CREATE UNIQUE INDEX user_metadata_index ON user_metadata(id, user_id)',
]
layout = db.get_layout()
@ -518,7 +494,12 @@ def update_database():
for index in indexes:
name = index.split('INDEX ')[1].split()[0]
if name not in layout['indexes']:
sql.append(index)
if name == 'useritem_index':
add_useritem_index()
elif name == 'listitem_index':
add_listitem_index()
else:
sql.append(index)
index_names.add(name)
for index in set(name for name in layout['indexes'] if not name.startswith('ix_sort_')) - index_names:
sql.append('DROP INDEX ' + index)
@ -531,3 +512,32 @@ def update_database():
import item.models
item.models.update_sort_table()
def add_listitem_index():
with db.session() as session:
sql = "SELECT COUNT(*) AS c,list_id,item_id FROM listitem GROUP BY list_id, item_id HAVING c>1"
doubles = [r for r in session.execute(sql)]
for r in doubles:
params = {'list_id': r[1], 'item_id': r[2]}
sql = "DELETE FROM listitem WHERE list_id = :list_id AND item_id = :item_id"
session.execute(sql, params)
sql = "INSERT INTO listitem (list_id, item_id) VALUES (:list_id, :item_id)"
session.execute(sql, params)
session.commit()
sql = 'CREATE UNIQUE INDEX IF NOT EXISTS listitem_index on listitem(list_id,item_id)'
session.execute(sql)
session.commit()
def add_useritem_index():
with db.session() as session:
sql = "SELECT COUNT(*) AS c,user_id,item_id FROM useritem GROUP BY user_id, item_id HAVING c>1"
doubles = [r for r in session.execute(sql)]
for r in doubles:
params = {'user_id': r[1], 'item_id': r[2]}
sql = "DELETE FROM useritem WHERE user_id = :user_id AND item_id = :item_id"
session.execute(sql, params)
sql = "INSERT INTO useritem (user_id, item_id) VALUES (:user_id, :item_id)"
session.execute(sql, params)
session.commit()
sql = 'CREATE UNIQUE INDEX IF NOT EXISTS useritem_index on useritem(user_id,item_id)'
session.execute(sql)
session.commit()