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Boolean

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Boolean

Boolean sits in a first job task. Riya’s job is Boolean on Riya's board. Write that first.

Do Boolean once by hand. one Boolean step Riya can write from memory. Change one input. Say the new result out loud.

Boolean exists so Riya can keep Boolean on Riya's board correct in a first job task.

Use Boolean when Boolean on Riya's board must stay clear. If a simpler SQL step works, use that instead.

If Boolean on Riya's board breaks under Boolean, check copy-pasting Boolean without a dry-run first.

Place Boolean next to nearby SQL work — one Boolean step Riya can write from memory is the link.

Viva for Boolean: what it is → one Boolean step Riya can write from memory → the mistake (copy-pasting Boolean without a dry-run).

Exam tip

Board: Boolean on Riya's board. Dry-run Boolean. Name the trap: copy-pasting Boolean without a dry-run.

Boolean — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products VALUES (1, 'Pen', 10), (2, 'Book', 200), (3, 'Bag', 50);
SELECT * FROM products
WHERE price BETWEEN 20 AND 150 AND name LIKE 'B%';

Boolean — wHERE combines predicates with AND/OR; LIKE does pattern match.

Short notes

DefBoolean — Riya uses it for Boolean on Riya's board in a first job task.
RuleBoolean → one Boolean step Riya can write from memory.
RememberBoolean + the query planner (a first job task).
UseBoolean in a first job task (Boolean on Riya's board).
TrapBoolean — copy-pasting Boolean without a dry-run.
ExBoolean → Boolean on Riya's board.

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL); INSERT INTO products VALUES (1, 'Pen', 10), (2, 'Book', 200), (3, 'Bag', 50); SELECT * FROM products WHERE price BETWEEN 20 AND 150 AND name LIKE 'B%';

Boolean

Boolean — sample query

Short notes

Questions

Boolean

Boolean — sample query

Short notes

Questions