Why DESC is used in SQL?

Is Desc a SQL command?

Prerequisite : Sql Create Clause, As the name suggests, DESCRIBE is used to describe something. Since in database we have tables, that’s why we use DESCRIBE or DESC(both are same) command to describe the structure of a table.

Why order by is used in SQL?

The ORDER BY statement in SQL is used to sort the fetched data in either ascending or descending according to one or more columns. By default ORDER BY sorts the data in ascending order. We can use the keyword DESC to sort the data in descending order and the keyword ASC to sort in ascending order.

How do I Desc a table in SQL Server?

SQL Server: sp_help table_name (or sp_columns table_name for only columns) Oracle DB2: desc table_name or describe table_name. MySQL: describe table_name (or show columns from table_name for only columns)

What does ORDER BY 1 do in SQL?

SQL Server allows you to sort the result set based on the ordinal positions of columns that appear in the select list. In this example, 1 means the first_name column and 2 means the last_name column.

How do I view a SQL description?

SQL DESC statement use for describe the list of column definitions for specified table. You can use either DESC or DESCRIBE statement.

DESCRIBE statement to get following information:

  1. Column Name.
  2. Column allow NULL or NOT NULL.
  3. Datatype of the Column.
  4. With database size precision and If NUMERIC datatype scale.
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What is the difference between domain and type?

With CREATE DOMAIN you can create a subtype that is based on one existing type (adding constraints to it). With CREATE TYPE you can create composite types or enum or others that they are structurally different to existing types.

How do you order two things in SQL?

After the ORDER BY keyword, add the name of the column by which you’d like to sort records first (in our example, salary). Then, after a comma, add the second column (in our example, last_name ). You can modify the sorting order (ascending or descending) separately for each column.

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 can I see table properties in SQL?

To show table properties in the Properties window

  1. In Object Explorer, select the table for which you want to show properties.
  2. Right-click the table and choose Properties from the shortcut menu. For more information, see Table Properties – SSMS.