SQL · Theory

UPPER()()

Theory

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UPPER()()

UPPER()() (str) sits in a viva board. Arun’s job is UPPER str on Arun's board. Write that first.

UPPER()() (str) order: meaning → one UPPER str step Arun can write from memory → one limit. Dumping ten features helps nobody.

Without UPPER()() (str), a viva board gets messy and UPPER str on Arun's board is hard to trust.

Arun ships UPPER()() (str) in a viva board. That is the use case worth saying.

Don’t do this with UPPER()() (str) — only reciting the name of UPPER str. Interviewers spot it in ten seconds.

UPPER()() (str) is not a lonely heading. Arun ties it to UPPER str on Arun's board.

One breath for UPPER()() (str), then UPPER str on Arun's board, then only reciting the name of UPPER str. Sit down.

Exam tip

For UPPER()() (str): definition + a viva board + one failure.

UPPER()() — sample query

-- UPPER()()
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;

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

Short notes

DefUPPER()() (str) — Arun uses it for UPPER str on Arun's board in a viva board.
RuleUPPER()() (str) → one UPPER str step Arun can write from memory.
RememberUPPER()() (str) + InnoDB (a viva board).
UseUPPER()() (str) in a viva board (UPPER str on Arun's board).
TrapUPPER()() (str) — only reciting the name of UPPER str.
ExUPPER()() (str) → UPPER str on Arun's board.

-- UPPER()() 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;

UPPER()()

UPPER()() — sample query

Short notes

Questions

UPPER()()

UPPER()() — sample query

Short notes

Questions