SQL · Theory

FORMAT()()

Theory

139/439

FORMAT()()

Don’t start FORMAT()() (str) with jargon. Start with FORMAT str on Vikram's board. That is the whole point.

FORMAT()() (str) on the board: one FORMAT str step Vikram can write from memory. Then say what FORMAT str on Vikram's board looks like after.

Skip FORMAT()() (str) and copy-pasting FORMAT str without a dry-run shows up in a small live site.

Use FORMAT()() (str) when FORMAT str on Vikram's board must stay clear. If a simpler SQL step works, use that instead.

FORMAT()() (str) trap — copy-pasting FORMAT str without a dry-run. Vikram loses marks for that every viva.

Place FORMAT()() (str) next to nearby SQL work — one FORMAT str step Vikram can write from memory is the link.

One breath for FORMAT()() (str), then FORMAT str on Vikram's board, then copy-pasting FORMAT str without a dry-run. Sit down.

Exam tip

For FORMAT()() (str): definition + a small live site + one failure.

FORMAT()() — sample query

-- FORMAT()()
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;

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

Short notes

DefFORMAT()() (str) — Vikram uses it for FORMAT str on Vikram's board in a small live site.
RuleFORMAT()() (str) → one FORMAT str step Vikram can write from memory.
RememberFORMAT()() (str) + InnoDB (a small live site).
UseFORMAT()() (str) in a small live site (FORMAT str on Vikram's board).
TrapFORMAT()() (str) — copy-pasting FORMAT str without a dry-run.
ExFORMAT()() (str) → FORMAT str on Vikram's board.

-- FORMAT()() 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;

FORMAT()()

FORMAT()() — sample query

Short notes

Questions

FORMAT()()

FORMAT()() — sample query

Short notes

Questions