SQL · Theory

After Insert Trigger

Theory

88/439

After Insert Trigger

Don’t start After Insert Trigger with jargon. Start with Dev walking through After Insert Trigger. That is the whole point.

Do After Insert Trigger once by hand. one After Insert Trigger step Dev can write from memory. Change one input. Say the new result out loud.

Without After Insert Trigger, lab hour gets messy and Dev walking through After Insert Trigger is hard to trust.

Dev ships After Insert Trigger in lab hour. That is the use case worth saying.

After Insert Trigger trap — copy-pasting After Insert Trigger without a dry-run. Dev loses marks for that every viva.

Place After Insert Trigger next to nearby SQL work — one After Insert Trigger step Dev can write from memory is the link.

Close After Insert Trigger with: “If I skip it, Dev walking through After Insert Trigger goes wrong like this: copy-pasting After Insert Trigger without a dry-run.”

Exam tip

Say After Insert Trigger in one breath, then one After Insert Trigger step Dev can write from memory, then copy-pasting After Insert Trigger without a dry-run.

After Insert Trigger — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products (id, name, price) VALUES
  (1, 'Mouse', 499),
  (2, 'Keyboard', 999);
SELECT * FROM products;

After Insert Trigger — iNSERT adds rows. List columns explicitly for clarity.

Short notes

DefAfter Insert Trigger — Dev uses it for Dev walking through After Insert Trigger in lab hour.
RuleAfter Insert Trigger → one After Insert Trigger step Dev can write from memory.
RememberAfter Insert Trigger + the query planner (lab hour).
UseAfter Insert Trigger in lab hour (Dev walking through After Insert Trigger).
TrapAfter Insert Trigger — copy-pasting After Insert Trigger without a dry-run.
ExAfter Insert Trigger → Dev walking through After Insert Trigger.

SQL · Theory

After Insert Trigger

← All stacks

Theory

88/439

After Insert Trigger

Don’t start After Insert Trigger with jargon. Start with Dev walking through After Insert Trigger. That is the whole point.

Do After Insert Trigger once by hand. one After Insert Trigger step Dev can write from memory. Change one input. Say the new result out loud.

Without After Insert Trigger, lab hour gets messy and Dev walking through After Insert Trigger is hard to trust.

Dev ships After Insert Trigger in lab hour. That is the use case worth saying.

After Insert Trigger trap — copy-pasting After Insert Trigger without a dry-run. Dev loses marks for that every viva.

Place After Insert Trigger next to nearby SQL work — one After Insert Trigger step Dev can write from memory is the link.

Close After Insert Trigger with: “If I skip it, Dev walking through After Insert Trigger goes wrong like this: copy-pasting After Insert Trigger without a dry-run.”

Exam tip

Say After Insert Trigger in one breath, then one After Insert Trigger step Dev can write from memory, then copy-pasting After Insert Trigger without a dry-run.

After Insert Trigger — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products (id, name, price) VALUES
  (1, 'Mouse', 499),
  (2, 'Keyboard', 999);
SELECT * FROM products;

After Insert Trigger — iNSERT adds rows. List columns explicitly for clarity.

Short notes

DefAfter Insert Trigger — Dev uses it for Dev walking through After Insert Trigger in lab hour.
RuleAfter Insert Trigger → one After Insert Trigger step Dev can write from memory.
RememberAfter Insert Trigger + the query planner (lab hour).
UseAfter Insert Trigger in lab hour (Dev walking through After Insert Trigger).
TrapAfter Insert Trigger — copy-pasting After Insert Trigger without a dry-run.
ExAfter Insert Trigger → Dev walking through After Insert Trigger.

After Insert Trigger

After Insert Trigger — sample query

Short notes

Questions

After Insert Trigger

After Insert Trigger — sample query

Short notes

Questions