distinct column
When you use DISTINCT think of it as a distinct row, not column. It will return only rows where the columns do not match exactly the same., You can try this. DECLARE @T TABLE (COD INT, ID INT, VALUE VARCHAR(20)) INSERT INTO @T VALUES(28, 1, NULL), (28, ...,The advantage is that you can select other columns in the result as well ... PostgreSQL has a special non-standard DISTINCT ON operator that can also be used. ,This tutorial shows you how to use the Oracle SELECT DISTINCT statement to get distinct rows based on one or more columns. ,The DISTINCT clause keeps one row for each group of duplicates. The DISTINCT clause can be used on one or more columns of a table. The following ... , Assuming that you're on SQL Server 2005 or greater, you can use a CTE with ROW_NUMBER(): SELECT * FROM (SELECT ID, SKU, Product, ..., Since you don't care, I chose the max ID for each number. select tbl.* from tbl inner join ( select max(id) as maxID, number from tbl group by ...,The SQL SELECT DISTINCT Statement. The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often ... ,SQL SELECT DISTINCT with COUNT on ROWS or on one columns. ,This tutorial shows you how to use the SQL Server SELECT DISTINCT clause to retrieve the only distinct values in a specified list of columns.
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 distinct column 相關參考資料
DISTINCT for only one Column - Stack Overflow
When you use DISTINCT think of it as a distinct row, not column. It will return only rows where the columns do not match exactly the same. https://stackoverflow.com How can I select distinct by one column? - Stack Overflow
You can try this. DECLARE @T TABLE (COD INT, ID INT, VALUE VARCHAR(20)) INSERT INTO @T VALUES(28, 1, NULL), (28, ... https://stackoverflow.com How to select distinct for one column and any in another column ...
The advantage is that you can select other columns in the result as well ... PostgreSQL has a special non-standard DISTINCT ON operator that can also be used. https://dba.stackexchange.com Oracle SELECT DISTINCT By Practical Examples
This tutorial shows you how to use the Oracle SELECT DISTINCT statement to get distinct rows based on one or more columns. https://www.oracletutorial.com PostgreSQL SELECT DISTINCT By Practical Examples
The DISTINCT clause keeps one row for each group of duplicates. The DISTINCT clause can be used on one or more columns of a table. The following ... http://www.postgresqltutorial. SELECT DISTINCT on one column - Stack Overflow
Assuming that you're on SQL Server 2005 or greater, you can use a CTE with ROW_NUMBER(): SELECT * FROM (SELECT ID, SKU, Product, ... https://stackoverflow.com SQL - select distinct only on one column - Stack Overflow
Since you don't care, I chose the max ID for each number. select tbl.* from tbl inner join ( select max(id) as maxID, number from tbl group by ... https://stackoverflow.com SQL SELECT DISTINCT Statement - W3Schools
The SQL SELECT DISTINCT Statement. The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often ... https://www.w3schools.com SQL SELECT DISTINCT | COUNT | ROWS | On one columns ...
SQL SELECT DISTINCT with COUNT on ROWS or on one columns. https://www.dofactory.com SQL Server SELECT DISTINCT - SQL Server Tutorial
This tutorial shows you how to use the SQL Server SELECT DISTINCT clause to retrieve the only distinct values in a specified list of columns. http://www.sqlservertutorial.n |