SQL · Theory

Change Storage Engine

Theory

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Change Storage Engine

Change Storage Engine sits in a viva board. Farhan’s job is Farhan walking through Change Storage Engine. Write that first.

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

Change Storage Engine exists so Farhan can keep Farhan walking through Change Storage Engine correct in a viva board.

Change Storage Engine shows up in a viva board. Name Farhan walking through Change Storage Engine, not “a real-world scenario”.

If Farhan walking through Change Storage Engine breaks under Change Storage Engine, check copy-pasting Change Storage Engine without a dry-run first.

Change Storage Engine is not a lonely heading. Farhan ties it to Farhan walking through Change Storage Engine.

Close Change Storage Engine with: “If I skip it, Farhan walking through Change Storage Engine goes wrong like this: copy-pasting Change Storage Engine without a dry-run.”

Exam tip

Board: Farhan walking through Change Storage Engine. Dry-run Change Storage Engine. Name the trap: copy-pasting Change Storage Engine without a dry-run.

Change Storage Engine — sample query

-- Change Storage Engine
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;

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

Short notes

DefChange Storage Engine — Farhan uses it for Farhan walking through Change Storage Engine in a viva board.
RuleChange Storage Engine → one Change Storage Engine step Farhan can write from memory.
RememberChange Storage Engine + InnoDB (a viva board).
UseChange Storage Engine in a viva board (Farhan walking through Change Storage Engine).
TrapChange Storage Engine — copy-pasting Change Storage Engine without a dry-run.
ExChange Storage Engine → Farhan walking through Change Storage Engine.

-- Change Storage Engine 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;

Change Storage Engine

Change Storage Engine — sample query

Short notes

Questions

Change Storage Engine

Change Storage Engine — sample query

Short notes

Questions