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JSON

Don’t start JSON with jargon. Start with a JSON dry-run. That is the whole point.

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

Skip JSON and copy-pasting JSON without a dry-run shows up in a viva board.

Use JSON when a JSON dry-run must stay clear. If a simpler SQL step works, use that instead.

Don’t do this with JSON — copy-pasting JSON without a dry-run. Interviewers spot it in ten seconds.

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

Close JSON with — “If I skip it, a JSON dry-run goes wrong like this: copy-pasting JSON without a dry-run.”

Exam tip

Board: a JSON dry-run. Dry-run JSON. Name the trap: copy-pasting JSON without a dry-run.

JSON — sample query

-- JSON
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;

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

Short notes

DefJSON — Arun uses it for a JSON dry-run in a viva board.
RuleJSON → one JSON step Arun can write from memory.
RememberJSON + an index (a viva board).
UseJSON in a viva board (a JSON dry-run).
TrapJSON — copy-pasting JSON without a dry-run.
ExJSON → a JSON dry-run.

-- JSON 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;

JSON

JSON — sample query

Short notes

Questions

JSON

JSON — sample query

Short notes

Questions