How do I select the top 1 row in MySQL?
How do I select the top 1 row in MySQL?
The SQL SELECT TOP Clause
- SQL Server / MS Access Syntax: SELECT TOP number|percent column_name(s) FROM table_name.
- MySQL Syntax: SELECT column_name(s) FROM table_name.
- Oracle 12 Syntax: SELECT column_name(s) FROM table_name.
- Older Oracle Syntax: SELECT column_name(s)
- Older Oracle Syntax (with ORDER BY): SELECT *
What does select top 1 do in SQL?
SELECT TOP 1 Means Selecting the very 1st record in the result set. SELECT 1 Means return 1 as the result set.
What does select 1 do in MySQL?
The statement ‘select 1’ from any table name means that it returns only 1. For example, If any table has 4 records then it will return 1 four times. Let us see an example.
How do you find the third highest salary?
To Find the Third Highest Salary Using a Sub-Query,
- SELECT TOP 1 SALARY.
- FROM (
- SELECT DISTINCT TOP 3 SALARY.
- FROM tbl_Employees.
- ORDER BY SALARY DESC.
- ) RESULT.
- ORDER BY SALARY.
How do I select top 10 rows in SQL?
MySQL Select Top 10 distinct Here’s the SQL query to select top 10 distinct rows using DISTINCT keyword. mysql> select distinct * from sales limit 10; Hopefully, now you can easily select top N rows in MySQL.
How do you select top 10 values in SQL?
Example – Using TOP PERCENT keyword SELECT TOP(10) PERCENT contact_id, last_name, first_name FROM contacts WHERE last_name = ‘Anderson’ ORDER BY contact_id; This SQL SELECT TOP example would select the first 10% of the records from the full result set.
What is the difference between count 1 and count (*)?
The difference is simple: COUNT(*) counts the number of rows produced by the query, whereas COUNT(1) counts the number of 1 values. This is because the database can often count rows by accessing an index, which is much faster than accessing a table.
Why do we use select 1?
select 1 from table will return the constant 1 for every row of the table. It’s useful when you want to cheaply determine if record matches your where clause and/or join .
WHERE is 3rd highest salary in Teradata?
SELECT MIN(EmpSalary) from ( SELECT EmpSalary from Employee ORDER BY EmpSalary DESC LIMIT 3 ); You can here just change the nth value after the LIMIT constraint. Here in this the Sub query Select EmpSalary from Employee Order by EmpSalary DESC Limit 3; would return the top 3 salaries of the Employees.
How to select top 10 Records in MySQL?
To select top 10 records, use LIMIT in MySQL. Let us first create a table − mysql> create table DemoTable -> ( -> PageNumber text -> ); Query OK, 0 rows affected (2.50 sec) Insert some records in the table using insert command −
How to select top 1 in MySQL-Quora?
DataGrip, a powerful GUI tool for SQL. Smart code completion, on-the-fly analysis, quick-fixes, refactorings that work in SQL files, and more. Here is would run the query and limit the returned row is just 1. You would change it to any number as you need.
Is there a limit clause in MySQL select top?
Note: Not all database systems support the SELECT TOP clause. MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses FETCH FIRST n ROWS ONLY and ROWNUM. Below is a selection from the “Customers” table in the Northwind sample database:
How do I select the highest salary in MySQL?
In this case let’s assume we have a column called “salary” and we first use “ORDER BY” to sort the results by this column and then use the “LIMIT” to return only the one record. As the sorting will return the highest to the top. The returned row would mean that we have the highest salary row returned.