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Limit

Limit sits in lab hour. Arun’s job is a Limit dry-run. Write that first.

Limit order — meaning → one Limit step Arun can write from memory → one limit. Dumping ten features helps nobody.

Limit exists so Arun can keep a Limit dry-run correct in lab hour.

Arun ships Limit in lab hour. That is the use case worth saying.

Don’t do this with Limit — skipping the failure case for Limit. Interviewers spot it in ten seconds.

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

Close Limit with — “If I skip it, a Limit dry-run goes wrong like this: skipping the failure case for Limit.”

Exam tip

For Limit: definition + lab hour + one failure.

Limit — sample query

-- Limit
CREATE TABLE demo (
  id INTEGER PRIMARY KEY,
  label TEXT NOT NULL,
  qty INTEGER DEFAULT 0
);
INSERT INTO demo (id, label, qty) VALUES
  (1, 'alpha', 2),
  (2, 'beta', 5);
SELECT label, qty FROM demo WHERE qty >= 2 ORDER BY qty DESC;

Limit: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Short notes

DefLimit — Arun uses it for a Limit dry-run in lab hour.
RuleLimit → one Limit step Arun can write from memory.
RememberLimit + an index (lab hour).
UseLimit in lab hour (a Limit dry-run).
TrapLimit — skipping the failure case for Limit.
ExLimit → a Limit dry-run.

-- Limit CREATE TABLE demo ( id INTEGER PRIMARY KEY, label TEXT NOT NULL, qty INTEGER DEFAULT 0 ); INSERT INTO demo (id, label, qty) VALUES (1, 'alpha', 2), (2, 'beta', 5); SELECT label, qty FROM demo WHERE qty >= 2 ORDER BY qty DESC;

Limit

Limit — sample query

Short notes

Questions

Limit

Limit — sample query

Short notes

Questions