Sql 语句到 SQLAlchemy

Question

如何将此 SQL 语句转换为 SQLAlchemy python。 还没有找到任何解决方案

提前致谢

select date_add(est_date, interval -WEEKDAY(est_date) day) FirstDayOfWeek

尝试了以下查询但没有工作func.dateadd(est_date, func.dayofweek(est_date), Interval()))

Answer 1

怎么样：

engine = sqlalchemy.create_engine(
    "mssql+pyodbc://"+user+":"+pwd+"@"+HOST+"/" + db + "?driver=SQL+Server+Native+Client+11.0?trusted_connection=yes",
    echo=False, fast_executemany=True)
query_read = "select date_add(est_date, interval  -WEEKDAY(est_date) day) FirstDayOfWeek"
with engine.begin() as conn:
    dfData_old = pd.read_sql(query_read, conn)

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