How to complete the requirement by writing an oracle sql?
- From: Quanwen Zhao <quanwenzhao@xxxxxxxxx>
- To: ORACLE-L <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 10 Apr 2023 22:52:45 +0800
Hello there,
I've a requirement about how to retrieve the final calc result from two
number of tables (A and B) from oracle database, such as:
table A:
TS_NAME USED_SIZE(MB)
-------------- ------------------------
a 10
b 20
c 30
d 40
e 50
table B:
TS_NAME USES_SIZE(MB)
--------------- ------------------------
a 2
b 6
e 20
I expect to acquire the result like this:
TS_NAME USED_SIZE(MB)
--------------- -------------------------
a 8
b 14
c 30
d 40
e 30
How to use the SQL to finish it?
Best Regards
Quanwen Zhao
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