What does ASC mean in SQL?

The ASC command is used to sort the data returned in ascending order.

What is ASC in DBMS?

ASC: to sort the data in ascending order. DESC: to sort the data in descending order.

Is ASC default in SQL?

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.

How do I get 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.

What is SQL DESC?

The DESC command is used to sort the data returned in descending order.

How do I recover a dropped table in SQL?

You can recover a dropped table by doing the following:

  1. Identify the dropped table by invoking the LIST HISTORY DROPPED TABLE command. …
  2. Restore a database- or table space-level backup image taken before the table was dropped.
  3. Create an export directory to which files containing the table data are to be written.
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What is group by in SQL?

The GROUP BY Statement in SQL is used to arrange identical data into groups with the help of some functions. i.e if a particular column has same values in different rows then it will arrange these rows in a group. … GROUP BY clause is used with the SELECT statement.

Is ASC default or DESC?

“[ASC | DESC]” is the keyword used to sort result sets in either ascending or descending order. Note ASC is used as the default.

How many tables can be join in SQL query?

Theoretically, there is no upper limit on the number of tables that can be joined using a SELECT statement. (One join condition always combines two tables!) However, the Database Engine has an implementation restriction: the maximum number of tables that can be joined in a SELECT statement is 64.

What is order by 2 desc in SQL?

If you prefer, you can use the positions of the column in the ORDER BY clause. … SELECT name, credit_limit FROM customers ORDER BY 2 DESC, 1; In this example, the position of name column is 1 and credit_limit column is 2. In the ORDER BY clause, we used these column positions to instruct the Oracle to sort the rows.

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.

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How do I find the shortest and longest name in SQL?

“how to find shortest and longest name in sql” Code Answer

  1. # IN the example below, “CITY” is the filed, “STATION” is the Table.
  2. (SELECT CITY, LENGTH(CITY)
  3. FROM STATION.
  4. ORDER BY LENGTH(CITY) ASC, CITY ASC LIMIT 1)
  5. UNION.
  6. (SELECT CITY, LENGTH(CITY)
  7. FROM STATION.
  8. ORDER BY.

How many primary keys can have in a table?

A table’s primary key should be explicitly defined in the CREATE TABLE statement. Tables can only have one primary key.

What does DESC table name do?

So desc or describe command shows the structure of table which include name of the column, data-type of column and the nullability which means, that column can contain null values or not.

What is describe table?

Describes either the columns in a table or the current values, as well as the default values, for the stage properties for a table. DESCRIBE can be abbreviated to DESC. ALTER TABLE , CREATE TABLE , SHOW TABLES.

How do you use DESC?

When sorting your result set in descending order, you use the DESC attribute in your ORDER BY clause. For example: SELECT last_name FROM employees WHERE first_name = ‘Sarah’ ORDER BY last_name DESC; This SQL Server ORDER BY example would return all records sorted by the last_name field in descending order.