df_last_pos_1000_500 = df_opt_weight_1000_500.iloc[-2].T.reset_index() df_last_pos_1000_500.columns = ['stock_code', 'weight'] df_last_pos_1000_500.dropna(inplace=True) df_last_pos_1000_500['weight'] = df_last_pos_1000_500['weight'] / df_last_pos_1000_500['weight']....
SELECT * FROM dept_stats WHERE emp_count > 1; -- 复杂连接查询 SELECT e.name, e.salary, d.avg_salary as department_avg FROM employees e JOIN ( SELECT department, AVG(salary) as avg_salary FROM employees GROUP BY department ) d ON e.department = d.department; 1. 2. 3. 4. 5. 6...
conn_str = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server}; SERVER=<server>; DATABASE=tpcxbb_1gb; UID=<username>; PWD=<password>') input_query = '''SELECT ss_customer_sk AS customer, ROUND(COALESCE(returns_count / NULLIF(1.0*orders_count, 0), 0), 7) AS order...
#用value值填充na,返回填充后的结果数据df.dropna(axis=0,how='any',inplace=False) #axis=0即行,how有‘any’和‘all’两个选项,all表示所有值都为NA才删除df.drop(labels=0,columns=['col1'],axis=0,) #删除指定列,也可以删除行,axis作用不大 df.rename(index={'row1':'A'},columns={'col...
GROUP BY sr_customer_sk ) returned ON ss_customer_sk=sr_customer_sk'''# Define the columns we wish to import.column_info = {"customer": {"type":"integer"},"orderRatio": {"type":"integer"},"itemsRatio": {"type":"integer"},"frequency": {"type":"integer"} ...
@dlt.table(schema=""" id int COMMENT 'This is the customer ID', name string COMMENT 'This is the customer full name', region string, ssn string MASK catalog.schema.ssn_mask_fn USING COLUMNS (region) """, row_filter ="ROW FILTER catalog.schema.us_filter_fn ON (region, name)"defsal...
最后我们只需要一个绑定legend(图例)的selection就行了,当select时,曲线显示,未select的曲线灰显,并且文本透明。不一一细说,好好理解selection condition之后都大同小异 # Create a selection that chooses the nearest point & selects based on x-value# nearest 是一个selection,字面意思就是选择器,可以给它一...
- ref: make condition_data / action_data param names match for create_project_rule (#80781) by @asottile-sentry - ref: explicitly install libexpat1 (#80742) by @asottile-sentry - ref(dashboards): Fixes and refactoring for edit access selector button (#80633) by @harshithadurai ...
<obj> = <exp> if <condition> else <exp> # Only one expression is evaluated. >>> [i if i else 'zero' for i in (0, 1, 2, 3)] # `any([0, '', [], None]) == False` ['zero', 1, 2, 3] And, Or <obj> = <exp> and <exp> [and ...] # Returns first false or...
1、生成6位数字随机验证码 import random import string def num_code(length=6): """ 生成长度为length的数字随机验证码 :param length: 验证码长度 :return: 验证码 """ return ''.join(random.choice(string.digits) for i in range(0, length)) ...