Questions: ID FirstName LastName 1 John Doe 2 Bugs Bunny 3 John Johnson I want to select DISTINCT results from the FirstName column, but I need the corresponding ID and LastName. The result set needs to show only one. To get unique or distinct values of a column in MySQL Table, use the following SQL Query. SELECT DISTINCT column_name FROM your_table_name; You can select distinct values for one or more columns.
mySQL select one column DISTINCT, with corresponding other columns 10 ID FirstName LastName 1 John Doe 2 Bugs Bunny 3 John Johnson I want to select DISTINCT FirstName column, but I need the corresponding ID and. 2018/04/25 · In this turial, I will show you How To Select Distinct on One Column With Multiple Columns in SQL SELECT Statement, How To Use distinct function in SQL SELECT Statement, How To retrieve distinct value. If there are multiple developers entwickler for an app anwendung one developer is picked arbitrarily. You have to add an ORDER BY clause if you want the "first" alphabetically according to your locale: SELECT DISTINCT ON 1. I am trying to build a query that tells me how many distinct women and men there are in a given dataset. The person is identified by a number 'tel'. It is possible for the same 'tel' to appear multiple times, but that 'tel's gender should.
You can't use DISTINCT like that, it is not a function. It's a modifier of the SELECT or UNION clause and it applies to all the row, not a single column. You can use GROUP BY instead and MIN function to find the smallest UNION. I am trying to select of the duplicate rows in mysql table it's working fine for me but the problem is that it is not letting me select all the fields in that query, just letting me select the field name i used as distinct, lemme write the. How can I select all fields with a distinct on only one field of that table? On top of this I'd like to sort so I have the most recent records. For example. DISTINCT is the wrong solution, especially if you're using the dreaded, evil "select. 2020/01/03 · Hello, I've been trying to find a way, using Oracle Express, to return more than one column but have only one column be distinct. The following will make. Try something like this. SELECT DISTINCT emp.Job_ID, a.
If I do a select distinct on it, all three rows are returned as they should, but is it possible to do a select distinct ignoring a specific column, so it would only return. Select Distinct only on certain columns. 2011/02/18 · How do you select multiple columns from a table while ensuring that one specific column doesnt contain duplicate values? SELECT DISTINCT col1,col2,col3,col4 from table This doesnt work, because DISTINCT here applies to all.
This makes it real hard to use DISTINCT on a single column, while getting the other columns, without doing major extremely ugly backflips. The correct answer is to use a GROUP BY on the columns that you want to have unique answers: SELECT col1, col2 FROM mytable GROUP BY col2 will give you arbitrary unique col2 rows, with their col1 data as well. MySQL DISTINCT with multiple columns You can use the DISTINCT clause with more than one column. In this case, MySQL uses the combination of values in these columns to determine the uniqueness of the row in the result set.
SQL99 specifies COUNTDISTINCT as only taking a single parameter. MySQL and DB/2 support a list of fields for this function, Postgres will support it from version 9.0 and MSSQL and Oracle do not support it in any current versions.
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