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Array

Array is a SQL idea you prove with Arun walking through Array, not with a slogan.

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

Without Array, a small live site gets messy and Arun walking through Array is hard to trust.

Array shows up in a small live site. Name Arun walking through Array, not “a real-world scenario”.

Array miss — copy-pasting Array without a dry-run. Fix it before you talk about advanced SQL.

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

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

Exam tip

Say Array in one breath, then one Array step Arun can write from memory, then copy-pasting Array without a dry-run.

Array — sample query

-- Array
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;

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

Short notes

DefArray — Arun uses it for Arun walking through Array in a small live site.
RuleArray → one Array step Arun can write from memory.
RememberArray + an index (a small live site).
UseArray in a small live site (Arun walking through Array).
TrapArray — copy-pasting Array without a dry-run.
ExArray → Arun walking through Array.

-- Array 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;

Array

Array — sample query

Short notes

Questions

Array

Array — sample query

Short notes

Questions