Question

如何在XML标记中放置包含多行的列？

这是我的示例mssql代码片段，

(SELECT DESCRIPTION 
 FROM WEV_STY PS WITH(NOLOCK) 
 JOIN MOEE_POV_STY MPS 
 WITH(NOLOCK) ON PS.STY_CD = MPS.PRV_STY_CD 
 FOR XML PATH('')) PPB_SDD

以上查询的sqlalchemy等价物是什么？如何将 FOR XML PATH（＆＃39;＆＃39;）翻译成sqlalchemy？

Answer 1

您可以在SQLALCHEMY中执行原始SQL查询。根据{{3}}和SQLALCHEMY doc，尝试类似：

# pymssql
engine = create_engine('mssql+pymssql://scott:tiger@hostname:port/dbname')
raw_con = engine.raw_connection()

try:
    cursor = raw_con.cursor()

    # add your proper SQL code here
    cursor.execute('(SELECT DESCRIPTION 
                     FROM WEV_STY PS WITH(NOLOCK) 
                     JOIN MOEE_POV_STY MPS 
                     WITH(NOLOCK) ON PS.STY_CD = MPS.PRV_STY_CD 
                     FOR XML PATH('')) PPB_SDD;')

    results = cursor.fetchall()
    cursor.close()
finally:
    raw_con.close()

SQLAlchemy：FOR XML PATH等价物

1 个答案: