You asked: What is DESC command in SQL Server?

How do you DESC in SQL Server?

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.

What is DESC table in SQL?

SQL DESC statement use for describe the list of column definitions for specified table. You can use either DESC or DESCRIBE statement. Datatype of the Column. … With database size precision and If NUMERIC datatype scale.

How do I find the description of a table in SQL Server?

Just select table and press Alt + F1 , it will show all the information about table like Column name, datatype, keys etc.

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.

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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.

Why do we use DDL?

Stands for “Data Definition Language.” A DDL is a language used to define data structures and modify data. For example, DDL commands can be used to add, remove, or modify tables within in a database. … Once a table is created, it can be modified using the ALTER command.

How do you describe a table in a database?

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. Syntax: DESCRIBE one; OR DESC one; Note : We can use either DESCRIBE or DESC(both are Case Insensitive).

How do you find the primary key in a table?

Get Primary Key Column Name Programmatically

  1. select C.COLUMN_NAME FROM.
  2. INFORMATION_SCHEMA.TABLE_CONSTRAINTS T.
  3. JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE C.
  4. ON C.CONSTRAINT_NAME=T.CONSTRAINT_NAME.
  5. WHERE.
  6. C.TABLE_NAME=’Employee’
  7. and T.CONSTRAINT_TYPE=’PRIMARY KEY’

How do I write a database table description?

3 simple statments should do for a table description: one describing what the table holds, one describing the initial state of data in the table (empty or pre-filled), and one describing how data moves in/out of the table. I would also include the table’s cardinality/relationship to other important tables.

What is ORDER BY 3 in SQL?

Order by 3 DESC. 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. You should always use a column name in Order by clause.

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What does 1 mean in SQL?

WHERE 1 is a synonym for “true” or “everything.” It’s a shortcut so they don’t have to remove the where clause from the generated SQL.

Can we use 2 ORDER BY in SQL?

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. … Then, after a comma, add the second column (in our example, last_name).