Revert "3"

This reverts commit aee63d09

Revert "3"
d0324d44 · 王晓庆 · aee63d09 · d0324d44 · d0324d44 · d0324d44
--- a/createdb.sql
+++ b/createdb.sql
+SELECT Name from sys.Databases;
 USE wxq2;
 IF OBJECT_ID('persons', 'U') IS NOT NULL

--- a/query.sql
+++ b/query.sql
 USE wxq2
-SELECT * FROM persons WHERE salesrep='Joe Dog'
+-- SELECT * FROM persons WHERE salesrep='Joe Dog'
-select * from Information_schema.Columns where table_name = 'persons'
+select * from Information_schema.Columns where table_name = 'person'
--- a/testdb.py
+++ b/testdb.py
@@ -36,8 +36,7 @@ if __name__ == '__main__':
    # 填充数据
    seed_sql = parse_sql('seed.sql')
-    df = pd.read_sql(seed_sql, conn)
+    pd.read_sql(seed_sql, conn)
-    print(df)
    # 运行学生代码
    query_sql = parse_sql('query.sql')