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数据库统计查询-优化查询语句

pull/95/head
layman_one 2023-04-18 11:21:22 +08:00
parent 6c63e19dcf
commit cc66b94530
1 changed files with 10 additions and 4 deletions
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14
backend/dvadmin/system/views/datav.py
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@ -29,6 +29,7 @@ def jx_timestamp():
class DataVViewSet(GenericViewSet): class DataVViewSet(GenericViewSet):
permission_classes = []
queryset = LoginLog.objects.all() queryset = LoginLog.objects.all()
serializer_class = LoginLogSerializer serializer_class = LoginLogSerializer
extra_filter_backends = [] extra_filter_backends = []
@ -97,14 +98,19 @@ class DataVViewSet(GenericViewSet):
tables_list = [] tables_list = []
for row in rows: for row in rows:
tables_list.append(row) tables_list.append(row)
# cursor.execute(
# "select table_schema as db, table_name as tb, table_rows as data_rows, index_length / 1024 as 'storage(KB)' from information_schema.tables where table_schema='{}';".format(
# DATABASE_NAME))
cursor.execute( cursor.execute(
"select table_schema as db, table_name as tb, table_rows as data_rows, index_length / 1024 as 'storage(KB)' from information_schema.tables where table_schema='{}';".format( "select table_schema as table_db, sum(index_length) as storage,count(table_name ) as tables from information_schema.tables group by table_schema having table_db='{}';".format(
DATABASE_NAME)) DATABASE_NAME))
rows = cursor.fetchall() rows = cursor.fetchall()
sum_space = 0 count = 0
space = 0
for row in rows: for row in rows:
sum_space += row[3] count = row[2]
database_info = {"count": len(tables_list), "space": round(sum_space / 1024, 2)} space = round(row[1] / 1024 / 1024, 2)
database_info = {"count": count, "space": space}
data = { data = {
"today_register": today_register, "today_register": today_register,
"today_login": today_login, "today_login": today_login,