SQL · Theory

INSERT IGNORE

Theory

38/439

INSERT IGNORE

If you can teach INSERT IGNORE using INSERT IGNORE on Sara's board, you know it. If you only know the heading, you don’t.

Keep INSERT IGNORE small. Sara should finish INSERT IGNORE on Sara's board in a few lines, not a 40-line dump.

INSERT IGNORE exists so Sara can keep INSERT IGNORE on Sara's board correct in a viva board.

INSERT IGNORE shows up in a viva board. Name INSERT IGNORE on Sara's board, not “a real-world scenario”.

Don’t do this with INSERT IGNORE — skipping the failure case for INSERT IGNORE. Interviewers spot it in ten seconds.

Place INSERT IGNORE next to nearby SQL work — one INSERT IGNORE step Sara can write from memory is the link.

Close INSERT IGNORE with: “If I skip it, INSERT IGNORE on Sara's board goes wrong like this: skipping the failure case for INSERT IGNORE.”

Exam tip

Board: INSERT IGNORE on Sara's board. Dry-run INSERT IGNORE. Name the trap: skipping the failure case for INSERT IGNORE.

INSERT IGNORE — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products (id, name, price) VALUES
  (1, 'Mouse', 499),
  (2, 'Keyboard', 999);
SELECT * FROM products;

INSERT IGNORE — iNSERT adds rows. List columns explicitly for clarity.

Short notes

DefINSERT IGNORE — Sara uses it for INSERT IGNORE on Sara's board in a viva board.
RuleINSERT IGNORE → one INSERT IGNORE step Sara can write from memory.
RememberINSERT IGNORE + the query planner (a viva board).
UseINSERT IGNORE in a viva board (INSERT IGNORE on Sara's board).
TrapINSERT IGNORE — skipping the failure case for INSERT IGNORE.
ExINSERT IGNORE → INSERT IGNORE on Sara's board.

SQL · Theory

INSERT IGNORE

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Theory

38/439

INSERT IGNORE

If you can teach INSERT IGNORE using INSERT IGNORE on Sara's board, you know it. If you only know the heading, you don’t.

Keep INSERT IGNORE small. Sara should finish INSERT IGNORE on Sara's board in a few lines, not a 40-line dump.

INSERT IGNORE exists so Sara can keep INSERT IGNORE on Sara's board correct in a viva board.

INSERT IGNORE shows up in a viva board. Name INSERT IGNORE on Sara's board, not “a real-world scenario”.

Don’t do this with INSERT IGNORE — skipping the failure case for INSERT IGNORE. Interviewers spot it in ten seconds.

Place INSERT IGNORE next to nearby SQL work — one INSERT IGNORE step Sara can write from memory is the link.

Close INSERT IGNORE with: “If I skip it, INSERT IGNORE on Sara's board goes wrong like this: skipping the failure case for INSERT IGNORE.”

Exam tip

Board: INSERT IGNORE on Sara's board. Dry-run INSERT IGNORE. Name the trap: skipping the failure case for INSERT IGNORE.

INSERT IGNORE — sample query

CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT, price REAL);
INSERT INTO products (id, name, price) VALUES
  (1, 'Mouse', 499),
  (2, 'Keyboard', 999);
SELECT * FROM products;

INSERT IGNORE — iNSERT adds rows. List columns explicitly for clarity.

Short notes

DefINSERT IGNORE — Sara uses it for INSERT IGNORE on Sara's board in a viva board.
RuleINSERT IGNORE → one INSERT IGNORE step Sara can write from memory.
RememberINSERT IGNORE + the query planner (a viva board).
UseINSERT IGNORE in a viva board (INSERT IGNORE on Sara's board).
TrapINSERT IGNORE — skipping the failure case for INSERT IGNORE.
ExINSERT IGNORE → INSERT IGNORE on Sara's board.

INSERT IGNORE

INSERT IGNORE — sample query

Short notes

Questions

INSERT IGNORE

INSERT IGNORE — sample query

Short notes

Questions