Question

我的问题可能对sql专家没有挑战性。我想将我的sql重写为ansi-sql。如何在Oracle中将sql更改为ansi-sql？

select * 
from TEST r
start with r.childid=@CHILDID 
connect by prior r.PARENTID=r.childid and r.recordstatus=1

Answer 1

ANSI SQL等效项将是一个递归公用表表达式：

var serializer = new JavaScriptSerializer();            
var json = serializer.Serialize(new {Field1="Value1"});

如果您还想将with recursive tree as ( select * from test where childid = .... --<< this is the START WITH part union all select child.* from test child join tree parent ON child.parentid = parent.childid and child.recordstatus = 1 --<< this is the CONNECT BY part ) select * from tree条件应用于递归开始，我不是100％。

Oracle不符合此处的标准，您不能使用recordstatus = 1关键字。

因此您需要从上面的查询中删除 recursive（对于SQL Server也是如此）

有关递归公用表表达式的更多详细信息（在Oracle中称为“子查询因子”）可以在手册中找到：

https://docs.oracle.com/database/121/SQLRF/statements_10002.htm#SQLRF55268

如何使用Ansi-Sql的pl / sql代码？

1 个答案: