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SQL · Theory

CEILING()()

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Theory

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CEILING()()

CEILING()() (math) sits in a campus project. Riya’s job is a CEILING math dry-run. Write that first.

For CEILING()() (math), an index is in play. Don’t blame it until you have traced a CEILING math dry-run.

Skip CEILING()() (math) and only reciting the name of CEILING math shows up in a campus project.

Riya ships CEILING()() (math) in a campus project. That is the use case worth saying.

CEILING()() (math) miss — only reciting the name of CEILING math. Fix it before you talk about advanced SQL.

CEILING()() (math) is not a lonely heading. Riya ties it to a CEILING math dry-run.

Viva for CEILING()() (math): what it is → one CEILING math step Riya can write from memory → the mistake (only reciting the name of CEILING math).

Exam tip

Board: a CEILING math dry-run. Dry-run CEILING()() (math). Name the trap: only reciting the name of CEILING math.

CEILING()() — sample query

-- CEILING()()
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;

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

Short notes

  • DefCEILING()() (math) — Riya uses it for a CEILING math dry-run in a campus project.
  • RuleCEILING()() (math) → one CEILING math step Riya can write from memory.
  • RememberCEILING()() (math) + an index (a campus project).
  • UseCEILING()() (math) in a campus project (a CEILING math dry-run).
  • TrapCEILING()() (math) — only reciting the name of CEILING math.
  • ExCEILING()() (math) → a CEILING math dry-run.

Questions

1

Define CEILING()() (math) without jargon. Then point at a CEILING math dry-run.

2

When would Riya actually reach for CEILING()() (math)?

3

What trap does Riya hit with CEILING()() (math)?

4

Write the smallest CEILING()() (math) step on a CEILING math dry-run. What happens?

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