Oracle select distinct two columns

Select with distinct on multiple columns and order by clause. Well the title says it all. We can count distinct values such as in select count (distinct col1) from mytable;. Count of distinct columns.

Ask Question Asked years, months ago. Select to get rows of data to different columns. Oracle SQL row values as columns.

I need to query an SQL database to find all distinct values of one column and I need an arbitrary value from another column. I mean it would be something like this: select distinct (colcolcolcolcol5), colfrom table. How do you select multiple columns from a table while ensuring that one specific column doesnt contain duplicate values? Supposing we have a table with four columns (a,b,c,d) of the same data type.

Is it possible to select all distinct values within the data in the columns and return them as a single column or do I. If we include the columns to be returned (first name, last name,SSN), then the uniqueness of the rows is lost due to nature of the data in these columns. The table has about 1odd columns as part of the HRMS suite and the columns to be considered for performing distinct operation are about 40. All set operators have equal precedence.

For instance, if you tried to apply this method to this two -column set: ( 3), ( ), ( , 3) to select two distinct rows, you might only get one if the first selected row happened to be ( 3). But you would get two if the first one was ( ). Sometimes, you may want to get only distinct values in a specified column of a table. Can you please settle an argument we are having re: select unique vs. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc.

The syntax varies between vb. I need to select one of each version in the data (using the code field) while keeping all the columns in the final output. I am selecting distinct on a code field but I cannot figure how to return the rest of the columns. The following will make all three columns distinct. The two main ones I use are common table expressions and sub-queries.

I want only the Job_ID column to be distinct. Specify the object name followed by a period and the asterisk to select all columns from the specified table, view, or materialized view. A query that selects rows from two or more tables, views, or materialized views is a join. SELECT whatever FROM more. An index can be unique or non-unique.

A unique index ensures that no two rows of a table have duplicate values in the indexed column (or columns ). In dba_tab_ columns table, the column_ids of all columns of all tables are stored. So if there is a table EMPLOYEE with columnns NAME and SALARY having column_id and respectively. You can use distinct by placing it after select and before the column list. This squashes out duplicates.

So you only get one row for each set of values in your columns. Expressions are the columns or calculations that you wish to retrieve. For example, there are two green pyramid rows in my collection. The result is simpler, faster, more efficient SQL. APPLIES TO: SQL Server Analysis Services Azure Analysis Services Power BI Premium Returns all possible states for the selected column in the model.

Example - With Single Field. Gnanesekhar select distinct (claimNumber, versionnumber) from claims this is the exact syntax I asked whether it will work. I dont think it works even with CTE right.

Did u try with dummy data. I tried seems its not working. Is there any reason that sql doesnt support a distinct on columns.