Your question: How do I find the description of a column in SQL Server?

How can I see table description in SQL Server?

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

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.

What is DESC command in SQL Server?

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

How do you define a column in SQL Server?

Using the Information Schema

  1. SELECT TABLE_NAME FROM INFORMATION_SCHEMA. TABLES.
  2. SELECT TABLE_NAME, COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS.
  3. SELECT COLUMN_NAME FROM INFORMATION_SCHEMA. COLUMNS WHERE TABLE_NAME = ‘Album’
  4. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA. …
  5. IF EXISTS( SELECT * FROM INFORMATION_SCHEMA.

How do you write a description of a query?

Syntax: DESCRIBE one; OR DESC one; Note : We can use either DESCRIBE or DESC(both are Case Insensitive). Suppose our table whose name is one has 3 columns named FIRST_NAME, LAST_NAME and SALARY and all are of can contain null values.

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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.

What are all the DDL commands?

Data Definition Language (DDL) commands:

  • CREATE to create a new table or database.
  • ALTER for alteration.
  • Truncate to delete data from the table.
  • DROP to drop a table.
  • RENAME to rename a table.

How do you describe a table in DBMS?

In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. A table has a specified number of columns, but can have any number of rows.

How can I see the structure of a table in SQL query?

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.

How do I get a count in SQL query?

SQL COUNT() Function

  1. SQL COUNT(column_name) Syntax. The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column: …
  2. SQL COUNT(*) Syntax. The COUNT(*) function returns the number of records in a table: …
  3. SQL COUNT(DISTINCT column_name) Syntax.

How show all columns in MySQL table?

You can list a table’s columns with the mysqlshow db_name tbl_name command. The DESCRIBE statement provides information similar to SHOW COLUMNS .

SHOW COLUMNS displays the following values for each table column:

  1. Field. The name of the column.
  2. Type. The column data type.
  3. Collation. …
  4. Null. …
  5. Key. …
  6. Default. …
  7. Extra. …
  8. Privileges.
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How do I get a list of all tables and columns in SQL Server?

You can use following query to list all columns or search columns across tables in a database. USE AdventureWorks GO SELECT t.name AS table_name, SCHEMA_NAME(schema_id) AS schema_name, c.name AS column_name FROM sys. tables AS t INNER JOIN sys. columns c ON t.