search:ms sql count distinct multiple columns相關網頁資料

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日期:2024-10-13
In Oracle, it's possible to get a count of distinct values in multiple ... You can use a cross apply and values . select T1.AssetId, count(distinct T2....
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日期:2024-10-12
SELECT cityandcountry, count(*) as occurrences FROM ( SELECT DISTINCT concat(city, country) FROM tablename ) as baseview;. if you want city ......
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日期:2024-10-12
How do I (or can I) SELECT DISTINCT on multiple columns? ... 'ACTIVE' WHERE id IN (SELECT DISTINCT (saleprice, saledate), id, count(id) .... tests with Oracle to see how the plans compare with Postgres and SQLServer....
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日期:2024-10-12
Multiple fields may also be added with DISTINCT clause. ... by clause; Count() function and select with distinct on multiple columns; SQL Online Practice Editor ......
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日期:2024-10-12
Hi, How do I specify multiple distinct columns in a count function. I am getting an error if I give SQL> select count(distinct company,time,region) ......
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日期:2024-10-12
Need help? Post your question and get tips & solutions from a ... I want to build query to return how many rows are in this query: select distinct c1 ......
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日期:2024-10-14
Is there any reason that sql doesnt support a distinct on 2 columns..i mean .... Here is one example of getting distinct count on multiple columns ......
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日期:2024-10-17
Hi guys i need to get count of few distinct columns in my table. ... Another option is to concatenate multiple columns in your count expression...