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BIT

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BIT

BIT sits in a first job task. Farhan’s job is a BIT dry-run. Write that first.

Do BIT once by hand. one BIT step Farhan can write from memory. Change one input. Say the new result out loud.

BIT exists so Farhan can keep a BIT dry-run correct in a first job task.

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

BIT miss — skipping the failure case for BIT. Fix it before you talk about advanced SQL.

BIT is not a lonely heading. Farhan ties it to a BIT dry-run.

Viva for BIT — what it is → one BIT step Farhan can write from memory → the mistake (skipping the failure case for BIT).

Exam tip

For BIT: definition + a first job task + one failure.

BIT — sample query

-- BIT
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;

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

Short notes

DefBIT — Farhan uses it for a BIT dry-run in a first job task.
RuleBIT → one BIT step Farhan can write from memory.
RememberBIT + the query planner (a first job task).
UseBIT in a first job task (a BIT dry-run).
TrapBIT — skipping the failure case for BIT.
ExBIT → a BIT dry-run.

-- BIT 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;

BIT

BIT — sample query

Short notes

Questions

BIT

BIT — sample query

Short notes

Questions