SQL · Theory

AFTER UPDATE Trigger

Theory

90/439

AFTER UPDATE Trigger

Don’t start AFTER UPDATE Trigger with jargon. Start with AFTER UPDATE Trigger on Riya's board. That is the whole point.

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

Without AFTER UPDATE Trigger, a first job task gets messy and AFTER UPDATE Trigger on Riya's board is hard to trust.

Riya ships AFTER UPDATE Trigger in a first job task. That is the use case worth saying.

AFTER UPDATE Trigger trap — skipping the failure case for AFTER UPDATE Trigger. Riya loses marks for that every viva.

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

One breath for AFTER UPDATE Trigger, then AFTER UPDATE Trigger on Riya's board, then skipping the failure case for AFTER UPDATE Trigger. Sit down.

Exam tip

For AFTER UPDATE Trigger: definition + a first job task + one failure.

AFTER UPDATE Trigger — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products VALUES (1, 'Mouse', 499);
UPDATE products SET price = 449 WHERE id = 1;
SELECT * FROM products;

AFTER UPDATE Trigger — uPDATE changes existing rows — always scope with WHERE.

Short notes

DefAFTER UPDATE Trigger — Riya uses it for AFTER UPDATE Trigger on Riya's board in a first job task.
RuleAFTER UPDATE Trigger → one AFTER UPDATE Trigger step Riya can write from memory.
RememberAFTER UPDATE Trigger + the query planner (a first job task).
UseAFTER UPDATE Trigger in a first job task (AFTER UPDATE Trigger on Riya's board).
TrapAFTER UPDATE Trigger — skipping the failure case for AFTER UPDATE Trigger.
ExAFTER UPDATE Trigger → AFTER UPDATE Trigger on Riya's board.

SQL · Theory

AFTER UPDATE Trigger

← All stacks

Theory

90/439

AFTER UPDATE Trigger

Don’t start AFTER UPDATE Trigger with jargon. Start with AFTER UPDATE Trigger on Riya's board. That is the whole point.

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

Without AFTER UPDATE Trigger, a first job task gets messy and AFTER UPDATE Trigger on Riya's board is hard to trust.

Riya ships AFTER UPDATE Trigger in a first job task. That is the use case worth saying.

AFTER UPDATE Trigger trap — skipping the failure case for AFTER UPDATE Trigger. Riya loses marks for that every viva.

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

One breath for AFTER UPDATE Trigger, then AFTER UPDATE Trigger on Riya's board, then skipping the failure case for AFTER UPDATE Trigger. Sit down.

Exam tip

For AFTER UPDATE Trigger: definition + a first job task + one failure.

AFTER UPDATE Trigger — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products VALUES (1, 'Mouse', 499);
UPDATE products SET price = 449 WHERE id = 1;
SELECT * FROM products;

AFTER UPDATE Trigger — uPDATE changes existing rows — always scope with WHERE.

Short notes

DefAFTER UPDATE Trigger — Riya uses it for AFTER UPDATE Trigger on Riya's board in a first job task.
RuleAFTER UPDATE Trigger → one AFTER UPDATE Trigger step Riya can write from memory.
RememberAFTER UPDATE Trigger + the query planner (a first job task).
UseAFTER UPDATE Trigger in a first job task (AFTER UPDATE Trigger on Riya's board).
TrapAFTER UPDATE Trigger — skipping the failure case for AFTER UPDATE Trigger.
ExAFTER UPDATE Trigger → AFTER UPDATE Trigger on Riya's board.

AFTER UPDATE Trigger

AFTER UPDATE Trigger — sample query

Short notes

Questions

AFTER UPDATE Trigger

AFTER UPDATE Trigger — sample query

Short notes

Questions