because they actually are different values.
Why we should not use distinct in SQL?
The fact that the resultset has duplicates is frequently (though not always) the result of a poor database design, an ineffective query, or both. In any case, issuing the query without the DISTINCT keyword yields more rows than expected or needed so the keyword is employed to limit what is returned to the user.
Are SQL lookups case sensitive?
The Lookup Transform does case sensitive string comparisons. This means that you need to a little bit of special handling to get it to work in a case insensitive way. … You’ll have to use the UPPER() function on the columns in your lookup transform’s SQL statement as well to get them to match.
Can I use distinct *?
Yes, Distinct tends to raise a little alarm in my head when I come across it in someones’ query. It is required in some cases ofcourse, but most data models should not require it. It tends to be a last resort, or outlier case, for having to use it.
Can we use distinct with *?
The distinct keyword is used in conjunction with select keyword. It is helpful when there is a need of avoiding duplicate values present in any specific columns/table. … NOTE: If distinct keyword is used with multiple columns, the distinct combination is displayed in the result set.
How do I make SQL search case sensitive?
SQL Server is, by default, case insensitive; however, it is possible to create a case-sensitive SQL Server database and even to make specific table columns case sensitive. The way to determine if a database or database object is to check its “COLLATION” property and look for “CI” or “CS” in the result.
How do I make SQL not case sensitive?
Case insensitive SQL SELECT: Use upper or lower functions
select * from users where lower(first_name) = ‘fred’; As you can see, the pattern is to make the field you’re searching into uppercase or lowercase, and then make your search string also be uppercase or lowercase to match the SQL function you’ve used.
How do I make SQL like case sensitive?
Long story short, the way to make an SQL select statement case sensitive is to add in that “COLLATE Latin1_General_BIN” after the column name.
How can I get distinct values 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.
Can we get distinct records from table without using distinct keyword?
Use the below query to add records to the table: … 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 I get distinct rows in SQL?
SQL SELECT DISTINCT Explanation
SELECT DISTINCT returns only unique (i.e. distinct) values. SELECT DISTINCT eliminates duplicate values from the results. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. DISTINCT operates on a single column.
Can I use two distinct in SQL?
Yes, the DISTINCT clause can be applied to any valid SELECT query. It is important to note that DISTINCT will filter out all rows that are not unique in terms of all selected columns.
How distinct is used in DBMS?
The unique values are fetched when we use the distinct keyword. SELECT DISTINCT returns only distinct (different) values. DISTINCT eliminates duplicate records from the table.
Example: Finding Unique Values in Multiple Column
- SELECT DISTINCT city, state.
- FROM suppliers.
- ORDER BY city, state;
What is the use of distinct keyword?
The DISTINCT keyword is used to fetch distinct records from a database table. The DISTINCT clause is basically used to remove duplicates from the result set of a SELECT statement and only selects DIFFERENT values.