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Slow Query Log

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Slow Query Log

Slow Query Log is a SQL idea you prove with Slow Query Log on Kabir's board, not with a slogan.

Keep Slow Query Log small. Kabir should finish Slow Query Log on Kabir's board in a few lines, not a 40-line dump.

Without Slow Query Log, lab hour gets messy and Slow Query Log on Kabir's board is hard to trust.

Use Slow Query Log when Slow Query Log on Kabir's board must stay clear. If a simpler SQL step works, use that instead.

Slow Query Log trap — copy-pasting Slow Query Log without a dry-run. Kabir loses marks for that every viva.

Place Slow Query Log next to nearby SQL work — one Slow Query Log step Kabir can write from memory is the link.

Close Slow Query Log with: “If I skip it, Slow Query Log on Kabir's board goes wrong like this: copy-pasting Slow Query Log without a dry-run.”

Exam tip

Say Slow Query Log in one breath, then one Slow Query Log step Kabir can write from memory, then copy-pasting Slow Query Log without a dry-run.

Slow Query Log — sample query

CREATE TABLE employees (id INTEGER PRIMARY KEY, name TEXT, dept TEXT, salary INTEGER);
INSERT INTO employees VALUES
  (1, 'Asha', 'Eng', 70000),
  (2, 'Ravi', 'Eng', 65000),
  (3, 'Neha', 'HR', 50000);
SELECT name, salary FROM employees WHERE dept = 'Eng' ORDER BY salary DESC;

Slow Query Log — sELECT projects columns; WHERE filters; ORDER BY sorts.

Short notes

DefSlow Query Log — Kabir uses it for Slow Query Log on Kabir's board in lab hour.
RuleSlow Query Log → one Slow Query Log step Kabir can write from memory.
RememberSlow Query Log + the query planner (lab hour).
UseSlow Query Log in lab hour (Slow Query Log on Kabir's board).
TrapSlow Query Log — copy-pasting Slow Query Log without a dry-run.
ExSlow Query Log → Slow Query Log on Kabir's board.

CREATE TABLE employees (id INTEGER PRIMARY KEY, name TEXT, dept TEXT, salary INTEGER); INSERT INTO employees VALUES (1, 'Asha', 'Eng', 70000), (2, 'Ravi', 'Eng', 65000), (3, 'Neha', 'HR', 50000); SELECT name, salary FROM employees WHERE dept = 'Eng' ORDER BY salary DESC;

Slow Query Log

Slow Query Log — sample query

Short notes

Questions

Slow Query Log

Slow Query Log — sample query

Short notes

Questions