How do I multiply all values of a single column in SQL?

How do I multiply all values of a single column in SQL?

SQLFiddle demo. Show activity on this post. select (case when sum(case when a = 0 then 1 else 0 end) > 0 then 0 else exp(sum(log(abs(a)))) * (case when sum(case when a < 0 then 1 else 0 end) % 2 = 1 then -1 else 1 end) end) as ProductA from table t; @Matt . . .

How do I run a query in db2?

Procedure

1. Start the command line processor, and set command line processor options.
2. Run SQL statements to query and modify data.
3. Terminate the command line processor, and restart it with a different set of options.
4. Create and call a stored procedure.

How do you multiply two columns in SQL query?

All you need to do is use the multiplication operator (*) between the two multiplicand columns ( price * quantity ) in a simple SELECT query. You can give this result an alias with the AS keyword; in our example, we gave the multiplication column an alias of total_price .

How do you find the product of a column in SQL?

SQL also has a function named LOG that calculates natural logarithm of a given number. Oracle supports this same function with the name LN. when you need to calculate product of values in a column in SQL, simply calculate natural exponentiation of sum of natural logarithms of the values in the column.

How add two columns result in SQL?

For example: ALTER TABLE employees ADD last_name VARCHAR(50), first_name VARCHAR(40); This SQL Server ALTER TABLE example will add two columns, last_name as a VARCHAR(50) field and first_name as a VARCHAR(40) field to the employees table.

How do I run multiple SQL statements at once?

To run a query with multiple statements, ensure that each statement is separated by a semicolon; then set the DSQEC_RUN_MQ global variable to 1 and run the query. When the variable is set to zero, all statements after the first semicolon are ignored.

What is product table in SQL?

products table stores the product’s information such as name, brand, category, model year, and list price. Each product belongs to a brand specified by the brand_id column. Hence, a brand may have zero or many products. Each product also belongs a category specified by the category_id column.

How do you make a product table?

Select From scratch — Design your own table.

1. Name the table: Products.
2. A single record is called a: Product.
3. Select an icon to represent your table — we chose the first suggested icon.
4. Provide a description: Product List.
5. Click the Create button.

What are arithmetic operators in DB2 SQL?

Db2 11 – Db2 SQL – Expressions with arithmetic operators Expressions with arithmetic operators If arithmetic operators are used, the result of the expression is a number derived from the application of the operators to the values of the operands. The result of the expression can be null.

What is the difference between multiply_Alt () and multiplication operator?

The MULTIPLY_ALT function is a better choice than the multiplication operator when performing decimal arithmetic where you want a scale of at least 3 and the sum of the precisions exceeds 31.

What does the multiply_Alt scalar function return?

The MULTIPLY_ALT scalar function returns the product of the two arguments. This function is an alternative to the multiplication operator and is especially useful when the sum of the precisions of the arguments exceeds 31. The schema is SYSIBM.