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UPSERT

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UPSERT

UPSERT is a SQL idea you prove with a UPSERT dry-run, not with a slogan.

UPSERT order — meaning → one UPSERT step Neha can write from memory → one limit. Dumping ten features helps nobody.

Skip UPSERT and only reciting the name of UPSERT shows up in a viva board.

Use UPSERT when a UPSERT dry-run must stay clear. If a simpler SQL step works, use that instead.

If a UPSERT dry-run breaks under UPSERT, check only reciting the name of UPSERT first.

UPSERT is not a lonely heading. Neha ties it to a UPSERT dry-run.

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

Exam tip

Say UPSERT in one breath, then one UPSERT step Neha can write from memory, then only reciting the name of UPSERT.

UPSERT — sample query

-- UPSERT
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;

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

Short notes

DefUPSERT — Neha uses it for a UPSERT dry-run in a viva board.
RuleUPSERT → one UPSERT step Neha can write from memory.
RememberUPSERT + an index (a viva board).
UseUPSERT in a viva board (a UPSERT dry-run).
TrapUPSERT — only reciting the name of UPSERT.
ExUPSERT → a UPSERT dry-run.

-- UPSERT 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;

UPSERT

UPSERT — sample query

Short notes

Questions

UPSERT

UPSERT — sample query

Short notes

Questions