Row Count - (DB2 RazorSQL Tool)

Row count is a commonly used operation in database management systems (DBMS). In DB2, the RazorSQL tool provides a convenient way to perform row count queries.

Syntax

The syntax for retrieving the row count of a table in DB2 using RazorSQL is as follows:

SELECT COUNT(*) FROM table_name;

Here, table_name is the name of the table for which the row count is being retrieved.

Example

SELECT COUNT(*) FROM employees;

In this example, we are retrieving the row count of the employees table in DB2.

Output

The output of the row count query using RazorSQL typically returns a single value representing the number of rows in the specified table.

| COUNT(*) |
|--------|
| 100    |

In this example, the employees table has 100 rows, which is returned by the row count query.

Explanation

The row count query is a simple and common operation that calculates the number of rows in a table. In DB2, the RazorSQL tool provides an easy way to execute this query. The COUNT(*) function returns the number of rows in the specified table.

Use

Row count queries are useful for a variety of tasks, such as estimating the size of a database or identifying duplicate rows. The RazorSQL tool provides an easy way to execute these queries in DB2.

Important Points

• The row count query calculates the number of rows in a table.
• The RazorSQL tool provides an easy way to execute this query in DB2.
• The COUNT(*) function is used to calculate the number of rows in the specified table.

Summary

In summary, row count queries are an important aspect of managing databases and are useful for estimating size and identifying duplicates. DB2's RazorSQL tool provides an easy way to perform these queries. The COUNT(*) function is used to calculate the number of rows in the specified table.