Access SQL Using the iif function in Java Generation upc a in Java Access SQL Using the iif function web forms code 128c

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Access SQL Using the iif function generate, create none none for none projectscode 128 generation select item, iif none for none (cost < 0, cost, " iif(cost >=0, cost, " from sec1804_finances order by item; ") as debits, ") as credits. BIRT Reporting Tools Beginning table (sec1804_finances table). ITEM COST ------ none for none ------------------- -----------SAMSONITE SUITCASE -$248.13 RENT FOR APRIL $700.00 OPERA TICKET -$145.

00 LUNCH -$15.62 DEBT REPAID BY JIM $20.00 CAR REPAIR -$622.


Result table ITEM DEBITS CRED none none ITS ------------------------- ------------ -----------BIRTHDAY GIFT FROM MOM $200.00 CAR REPAIR -$622.98 DEBT REPAID BY JIM $20.

00 HAIRCUT -$22.00 LUNCH -$15.62 OPERA TICKET -$145.


IF-THEN-ELSE LOGIC Notes In Oracle, this command tells SQL*Plus to display nulls as blank spaces. After running th none none is query, you may want to see the nulls as (null) again. If you do, you can use this command:. set null "(null)";. In Oracle, the none for none null here cannot be replaced with a space enclosed in sin-. gle quotes becau se the credits column is numeric, as cost is a number. We are not allowed to enter text values into a numeric column..

Check your understanding List all the emp loyees from the l_employees table. Include their hire_date. Use if-then-else logic to divide the hire dates into two different columns.

One column will contain all the hire dates before the year 2000. The other column will contain all the hire dates after the year 2000..

18-5 Applying two functions to different parts of the data The decode, case , and iif functions can be used to apply one function to part of the data and another function to the rest of the data. The task in this section is the same as in section 15-13, where the SQL code was written using a union..

Task Increase the pri ce of all foods costing more than $2.00 by 5 percent. Increase the price of all other foods by 10 percent.

Ignore the price_increase column.. CHAPTER 18 IF-THEN-ELSE, PARAMETER QUERIES, AND SUBQUERIES Oracle SQL Using decode select menu_item none for none , description, decode (sign(price - 2.00), +1, price * 1.05, 0, price * 1.

10, -1, price * 1.10, null, null) from l_foods order by menu_item;. as new_price Oracle SQL Using case select menu_item , description, case when price > 2.00 then price * 1.05 else price * 1.

10 end as new_price from l_foods;. Access SQL Using iif select descripti on, iif(price > 2.00, price * 1.05, price * 1.

10) as new_price from l_foods;. Beginning table none none (l_foods table). SUPPLIER ID ---- ---ASP ASP ASP CBC CBC FRV FRV JBR JBR VSB PRODUCT MENU PRICE CODE ITEM DESCRIPTION PRICE INCREASE ------- ------- -------------------- ----------- -------FS 1 FRESH SALAD $2.00 $0.25 SP 2 SOUP OF THE DAY $1.

50 SW 3 SANDWICH $3.50 $0.40 GS 4 GRILLED STEAK $6.

00 $0.70 SW 5 HAMBURGER $2.50 $0.

30 BR 6 BROCCOLI $1.00 $0.05 FF 7 FRENCH FRIES $1.

50 AS 8 SODA $1.25 $0.25 VR 9 COFFEE $0.

85 $0.15 AS 10 DESSERT $3.00 $0.

50. PARAMETER QUERIES Result table MENU ITEM ------ none none 1 2 3 4 5 6 7 8 9 10 NEW DESCRIPTION PRICE -------------------- -------FRESH SALAD $2.20 SOUP OF THE DAY $1.65 SANDWICH $3.


10 FRENCH FRIES $1.65 SODA $1.38 COFFEE $.

94 DESSERT $3.15. Check your understanding List all the emp none none loyees from the l_employees table. Include their hire_date and credit_limit. Use if-then-else logic to increase the credit limits.

For employees hired before the year 2000, double their credit limits. For other employees, increase their credit limits by 50 percent..

Parameter Queries There are no var none none iables in SQL. Everything about an SQL query must be specific the literal values, the column names, and the table names. The state of the data can be an unknown, because the data may be constantly changing, but there are no unknowns within an SQL query or command.

In this chapter, we discuss two methods that take a step toward introducing variables into SQL parameter queries and subqueries. We have already discussed another method, using a table of constants. In that method, many of the literal values are put as data into a table instead of being coded directly into the SQL.

Usually a table of constants has only one row. In a parameter query, the variables do not belong to the SQL itself; rather, they belong to the environment that people use to submit SQL queries..

In Oracle Databa se Home Page, the environment is PL/SQL. Variables are written with a colon before the name of the variable. For example:.

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