What is ORDER BY clause in SQL?
An ORDER BY clause in SQL specifies that a SQL SELECT statement returns a result set with the rows being sorted by the values of one or more columns. … The expressions are evaluated and the results are used for the sorting, i.e., the values stored in the column or the results of the function call.
What is ORDER BY 2 in SQL?
SELECT first_name, last_name FROM sales.customers ORDER BY 1, 2; In this example, 1 means the first_name column and 2 means the last_name column. Using the ordinal positions of columns in the ORDER BY clause is considered as bad programming practice for a couple of reasons.
Can you ORDER BY 2 columns in SQL?
Discussion: If you want to select records from a table but would like to see them sorted according to two columns, you can do so with ORDER BY . This clause comes at the end of your SQL query. After the ORDER BY keyword, add the name of the column by which you’d like to sort records first (in our example, salary).
How do I sort A to Z in SQL?
Results are usually sorted in Ascending order (A to Z); however, you can sort in descending order (Z to A) using the DESC keyword. To do so just add the DESC keyword to the end of the column. You can add the key word to the end of any column in the SQL ORDER BY clause.
What is top SQL?
The SQL TOP clause is used to fetch a TOP N number or X percent records from a table. For example MySQL supports the LIMIT clause to fetch limited number of records while Oracle uses the ROWNUM command to fetch a limited number of records. …
What is order command?
The ORDER BY command is used to sort the result set in ascending or descending order. The ORDER BY command sorts the result set in ascending order by default. To sort the records in descending order, use the DESC keyword.
What is ORDER BY 3 in SQL?
Example 3: Sort results by column positions in a Select statement using SQL Order By clause. … In this query, column birthdate is at the 3rd position; therefore, we can use three in the Order by clause to sort results on this column data. Note: I would not recommend using column position in Order By clause.
What is ORDER BY 1 desc in SQL?
This: ORDER BY 1. …is known as an “Ordinal” – the number stands for the column based on the number of columns defined in the SELECT clause. In the query you provided, it means: ORDER BY A.PAYMENT_DATE.
How do you order things in SQL?
The SQL ORDER BY Keyword
The ORDER BY keyword is used to sort the result-set in ascending or descending order. The ORDER BY keyword sorts the records in ascending order by default. To sort the records in descending order, use the DESC keyword.
Can we ORDER BY 2 columns?
SQL ORDER BY Multiple Columns
However we can use multiple columns in ORDER BY clause. When multiple columns are used in ORDER BY, first the rows will be sorted based on the first column and then by the second column. Lets take an example to understand this.
How do you do multiple columns in SQL?
To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.
How do I sort all columns in SQL?
Sort according to multiple columns: To sort in ascending or descending order we can use the keywords ASC or DESC respectively. To sort according to multiple columns, separate the names of columns by (,) operator.
How do you do alphabetical order in SQL?
If you want to sort based on two columns, separate them by commas. For example, ORDER BY LAST_NAME ASC, FIRST_NAME DESC; would display results sorted alphabetically by last name. If the same LAST_NAME matches multiple FIRST_NAME entries, the results of FIRST_NAME will also display in descending order.
How do I get alphabetical order in SQL?
By default, ORDER BY without any additional specifier sorts in ascending order (equivalent to using the ASC keyword explicitly). As you can probably guess, ASC stands for “ascending.” If you’d like to sort in descending order, simplify specify the DESC keyword after the column name.
How do I write a SQL JOIN?
The join is done by the JOIN operator. In the FROM clause, the name of the first table ( product ) is followed by a JOIN keyword then by the name of the second table ( category ). This is then followed by the keyword ON and by the condition for joining the rows from the different tables.