SQL · Theory

Reset Auto-Increment

Theory

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Reset Auto-Increment

Isha only reaches for Reset Auto-Increment when Reset Auto-Increment on Isha's board has to stay correct in a small live site.

Keep Reset Auto-Increment small. Isha should finish Reset Auto-Increment on Isha's board in a few lines, not a 40-line dump.

Skip Reset Auto-Increment and only reciting the name of Reset Auto-Increment shows up in a small live site.

Use Reset Auto-Increment when Reset Auto-Increment on Isha's board must stay clear. If a simpler SQL step works, use that instead.

Reset Auto-Increment miss — only reciting the name of Reset Auto-Increment. Fix it before you talk about advanced SQL.

After Reset Auto-Increment, Isha should still remember only reciting the name of Reset Auto-Increment.

One breath for Reset Auto-Increment, then Reset Auto-Increment on Isha's board, then only reciting the name of Reset Auto-Increment. Sit down.

Exam tip

For Reset Auto-Increment: definition + a small live site + one failure.

Reset Auto-Increment — sample query

-- Reset Auto-Increment
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;

Reset Auto-Increment: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Short notes

DefReset Auto-Increment — Isha uses it for Reset Auto-Increment on Isha's board in a small live site.
RuleReset Auto-Increment → one Reset Auto-Increment step Isha can write from memory.
RememberReset Auto-Increment + an index (a small live site).
UseReset Auto-Increment in a small live site (Reset Auto-Increment on Isha's board).
TrapReset Auto-Increment — only reciting the name of Reset Auto-Increment.
ExReset Auto-Increment → Reset Auto-Increment on Isha's board.

-- Reset Auto-Increment 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;

Reset Auto-Increment

Reset Auto-Increment — sample query

Short notes

Questions

Reset Auto-Increment

Reset Auto-Increment — sample query

Short notes

Questions