Here are the data types that are supported for DB2 under UNIX and PC Hosts:

What are the valid Db2 numeric data types?

Here are the data types that are supported for DB2 under UNIX and PC Hosts:

  • Character data: CHAR(n) LONG VARGRAPHIC. CLOB (character large object) VARCHAR(n)
  • Numeric data: BIGINT. INTEGER. DECIMAL | DEC | NUMERIC | NUM. SMALLINT.
  • Date and time data: DATE. TIMESTAMP. TIME.
  • Binary data: BLOB (binary large object)

What is decimal data type in Db2?

A decimal number is a packed decimal number with an implicit decimal point. The position of the decimal point is determined by the precision and the scale of the number. The scale, which is the number of digits in the fractional part of the number, cannot be negative or greater than the precision.

How do you count in Db2?

The COUNT(*) returns the number of rows in a set, including rows that contain NULL values. The COUNT() returns a result of INT type. It never returns NULL. If the number of values in a set exceeds the maximum value of the INT type, which is 2,147,483,647, you can use the COUNT_BIG() function instead.

Where is Rownum in Db2?

Both ROWNUM and ROW_NUMBER() OVER() are allowed in the WHERE clause of a subselect and are useful for restricting the size of a result set. If you use ROWNUM in the WHERE clause and there is an ORDER BY clause in the same subselect, the ordering is applied before the ROWNUM predicate is evaluated.

What will you face Sqlcode 911?

At the time of deadlock or timeout you will face SQLCODE -911.

What is float in Db2?

The FLOAT function returns a floating-point representation of either a number or a string representation of a number.

What data type is a decimal?

exact numeric data type
The decimal data type is an exact numeric data type defined by its precision (total number of digits) and scale (number of digits to the right of the decimal point).

What is the size of Smallint in Db2?

SMALLINT is used to stores small integers with a precision of 15 bits. The range of SMALLINT is -32,768 to +32,767.

How do I count a query in a selection?

SELECT COUNT(*) FROM table_name; The COUNT(*) function will return the total number of items in that group including NULL values. The FROM clause in SQL specifies which table we want to list. You can also use the ALL keyword in the COUNT function.

How do you count rows in a database?

To counts all of the rows in a table, whether they contain NULL values or not, use COUNT(*). That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement.

How do you get the first 10 rows in DB2?

To return only the rows of the employee table for those 20 employees, you can write a query as shown in the following example: SELECT LASTNAME, FIRSTNAME, EMPNO, SALARY FROM EMP ORDER BY SALARY DESC FETCH FIRST 20 ROWS ONLY; You can also use FETCH FIRST n ROWS ONLY within a subquery.