Helpful tips

How do I select multiple columns in a group by?

How do I select multiple columns in a group by?

2 Answers

  1. Add the additional columns to the GROUP BY clause: GROUP BY Rls.RoleName, Pro.[FirstName], Pro.[LastName]
  2. Add some aggregate function on the relevant columns: SELECT Rls.RoleName, MAX(Pro.[FirstName]), MAX(Pro.[LastName])

How do I select multiple columns in MySQL?

To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.

Can I group by multiple columns in SQL?

We can group the resultset in SQL on multiple column values. When we define the grouping criteria on more than one column, all the records having the same value for the columns defined in the group by clause are collectively represented using a single record in the query output.

Can we group by multiple columns?

Yes, it is possible to use MySQL GROUP BY clause with multiple columns just as we can use MySQL DISTINCT clause. Consider the following example in which we have used DISTINCT clause in first query and GROUP BY clause in the second query, on ‘fname’ and ‘Lname’ columns of the table named ‘testing’.

How does GROUP BY multiple columns work?

  1. Group By single column: Group By single column means, to place all the rows with same value of only that particular column in one group.
  2. Group By multiple columns: Group by multiple column is say for example, GROUP BY column1, column2.

Does GROUP BY need all columns?

Every column has to either be an aggregate or be specified in the “GROUP BY”, but it seems like anything not aggregated should be automatically grouped.

How do I select multiple columns?

Select Columns You can also select multiple columns by selecting a column header, pressing and holding the Shift key, and pressing the Left or Right arrow keys to select additional columns.

How do I select multiple columns in Google Sheets query?

How to Select Multiple Columns Using SQL Query

  1. select A, D. With this, we’ll have to place it in Google Sheets’ QUERY function with the format: =query([range],”[SQL query]'”)
  2. select A, C, D where C < 1800.
  3. select D, C, A.

Can we use two GROUP BY in same query?

type can be only either debit or credit and instrument can be any method like credit card etc.

How do I select multiple columns from multiple tables in SQL?

Example syntax to select from multiple tables:

  1. SELECT p. p_id, p. cus_id, p. p_name, c1. name1, c2. name2.
  2. FROM product AS p.
  3. LEFT JOIN customer1 AS c1.
  4. ON p. cus_id=c1. cus_id.
  5. LEFT JOIN customer2 AS c2.
  6. ON p. cus_id = c2. cus_id.