How do you show even records in SQL?

How do I display an even ID in SQL?

Syntax. To find and return the records with the odd or even values, the most simple way is to check the remainder when we divide the column value by 2. When the remainder is 0, that’s an even number, otherwise, that’s an odd number.

How can I get even and odd records in SQL?

Write a subquery with an ORDER BY clause. Along with the data columns, select the pseudocolumn rownum with an alias, say rn. In the outer query, reference the alias rn and use the mod function to get odd rows or even rows.

How do I display only few records in SQL?

MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses FETCH FIRST n ROWS ONLY and ROWNUM .

  1. SQL Server / MS Access Syntax: SELECT TOP number|percent column_name(s) …
  2. MySQL Syntax: SELECT column_name(s) …
  3. Oracle 12 Syntax: …
  4. Older Oracle Syntax: …
  5. Older Oracle Syntax (with ORDER BY):
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How do I count distinct values in SQL?

SELECT COUNT (DISTINCT item_num) FROM items; If the COUNT DISTINCT function encounters NULL values, it ignores them unless every value in the specified column is NULL. If every column value is NULL, the COUNT DISTINCT function returns zero (0).

What is distinct SQL?

The SQL DISTINCT keyword is used in conjunction with the SELECT statement to eliminate all the duplicate records and fetching only unique records. There may be a situation when you have multiple duplicate records in a table.

How do I fetch even records in SQL Server?

Following is for fetching even number:: Select * from MEN where Men_ID%2=0; Following is for fetching odd number:: Select * from MEN where Men_ID%2!= 0; Here MEN is your table_name Men_ID is the column in MEN Table.

How can I get unique records without using distinct in SQL?

SQL | Remove Duplicates without Distinct

  1. Remove Duplicates Using Row_Number. …
  2. 2.Remove Duplicates using self Join. …
  3. Remove Duplicates using group By.

How do you query without duplicates?

The go to solution for removing duplicate rows from your result sets is to include the distinct keyword in your select statement. It tells the query engine to remove duplicates to produce a result set in which every row is unique. The group by clause can also be used to remove duplicates.

How do I find an alternate record in MySQL?

MySQL MOD() method returns the remainder of a number divided by another number. So for getting alternate rows, we can divide the ID with 2 and displays only those having remainder 1.

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What does <> operator mean in SQL?

Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand is not equal to the right operand; otherwise, the result is FALSE.

How does intersect work in SQL?

The SQL INTERSECT clause/operator is used to combine two SELECT statements, but returns rows only from the first SELECT statement that are identical to a row in the second SELECT statement. This means INTERSECT returns only common rows returned by the two SELECT statements.

How do I show only one row in SQL?

4 Ways to Join Only The First Row in SQL

  1. Use Correlated Subqueries when the foreign key is indexed.
  2. Use a Complete Subquery when you don’t have indexes.
  3. Use Nested Subqueries if you have an ordered ID column.
  4. Use Nested Subqueries if you have an ordered ID column.
  5. Use Window Functions if you need more control.

How do I get bottom 10 records in SQL?

The following is the syntax to get the last 10 records from the table. Here, we have used LIMIT clause. SELECT * FROM ( SELECT * FROM yourTableName ORDER BY id DESC LIMIT 10 )Var1 ORDER BY id ASC; Let us now implement the above query.

How can I get top 3 salary in SQL?

Query : select * from( select ename, sal, dense_rank() over(order by sal desc)r from Employee) where r=&n; To find to the 2nd highest sal set n = 2 To find 3rd highest sal set n = 3 and so on.

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