How do you select unique records without distinct?
Below are alternate solutions :
- Remove Duplicates Using Row_Number. WITH CTE (Col1, Col2, Col3, DuplicateCount) AS ( SELECT Col1, Col2, Col3, ROW_NUMBER() OVER(PARTITION BY Col1, Col2, Col3 ORDER BY Col1) AS DuplicateCount FROM MyTable ) SELECT * from CTE Where DuplicateCount = 1.
- Remove Duplicates using group By.
How do you select unique records in Access query?
Right-click somewhere in the Query window beside a table (but not on a table) and select Properties from the popup menu.
- When the property editor appears, make sure that the top of the editor says:
- Set the “Unique Values” property to Yes.
- This property is specific to the query that you are working on.
Can we get distinct records from a table without using distinct keyword?
Now we will retrieve all the data from dup_table Table: SELECT * FROM dup_table; Now let’s retrieve distinct rows without using the DISTINCT clause.
How do you select distinct values from database without using the distinct keyword?
SQL Puzzle | 5 Ways to GET DISTINCT DATA without using distinct Keyword | SQL Interview Question
- Using UNION.
- Using RowNumber.
- Using GroupBy.
- Using EXCEPT.
- Using INTERSECT.
What can I use instead of distinct in Oracle?
The DISTINCT operator causes Oracle to fetch all rows satisfying the table join and then sort and filter out duplicate values. EXISTS is a faster alternative, because the Oracle optimizer realizes when the subquery has been satisfied once, there is no need to proceed further and the next matching row can be fetched.
How do I get only unique records in SQL?
The SQL SELECT DISTINCT Statement The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values.
What is SELECT distinct in access?
DISTINCT: Omits records that contain duplicate data in the selected fields. To be included in the results of the query, the values for each field listed in the SELECT statement must be unique. For example, several employees listed in an Employees table may have the same last name.
How do you SELECT unique records from a table?
What is the alternative for distinct?
Some common synonyms of distinct are apparent, clear, evident, manifest, obvious, patent, and plain.
How do I SELECT a record without duplicates in one column in SQL?
SELECT DISTINCT returns only unique values (without duplicates). DISTINCT operates on a single column. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc.
What is unique record?
Unique records are those for which, for the value of a given field, no other records have the same value. Note that in each case we must describe which field(s) we mean when we say unique or duplicate.