SQL · Theory

ALTER Table

Theory

14/439

ALTER Table

Meera only reaches for ALTER Table when a ALTER Table dry-run has to stay correct in a viva board.

ALTER Table on the board: one ALTER Table step Meera can write from memory. Then say what a ALTER Table dry-run looks like after.

Without ALTER Table, a viva board gets messy and a ALTER Table dry-run is hard to trust.

ALTER Table shows up in a viva board. Name a ALTER Table dry-run, not “a real-world scenario”.

ALTER Table trap — copy-pasting ALTER Table without a dry-run. Meera loses marks for that every viva.

Place ALTER Table next to nearby SQL work — one ALTER Table step Meera can write from memory is the link.

Close ALTER Table with: “If I skip it, a ALTER Table dry-run goes wrong like this: copy-pasting ALTER Table without a dry-run.”

Exam tip

Say ALTER Table in one breath, then one ALTER Table step Meera can write from memory, then copy-pasting ALTER Table without a dry-run.

ALTER Table — sample query

CREATE TABLE items (id INTEGER PRIMARY KEY, title TEXT);
ALTER TABLE items ADD COLUMN price REAL DEFAULT 0;
INSERT INTO items (id, title, price) VALUES (1, 'Pen', 10);
SELECT * FROM items;

ALTER TABLE changes structure without rebuilding the whole table.

Short notes

DefALTER Table — Meera uses it for a ALTER Table dry-run in a viva board.
RuleALTER Table → one ALTER Table step Meera can write from memory.
RememberALTER Table + InnoDB (a viva board).
UseALTER Table in a viva board (a ALTER Table dry-run).
TrapALTER Table — copy-pasting ALTER Table without a dry-run.
ExALTER Table → a ALTER Table dry-run.

SQL · Theory

ALTER Table

← All stacks

Theory

14/439

ALTER Table

Meera only reaches for ALTER Table when a ALTER Table dry-run has to stay correct in a viva board.

ALTER Table on the board: one ALTER Table step Meera can write from memory. Then say what a ALTER Table dry-run looks like after.

Without ALTER Table, a viva board gets messy and a ALTER Table dry-run is hard to trust.

ALTER Table shows up in a viva board. Name a ALTER Table dry-run, not “a real-world scenario”.

ALTER Table trap — copy-pasting ALTER Table without a dry-run. Meera loses marks for that every viva.

Place ALTER Table next to nearby SQL work — one ALTER Table step Meera can write from memory is the link.

Close ALTER Table with: “If I skip it, a ALTER Table dry-run goes wrong like this: copy-pasting ALTER Table without a dry-run.”

Exam tip

Say ALTER Table in one breath, then one ALTER Table step Meera can write from memory, then copy-pasting ALTER Table without a dry-run.

ALTER Table — sample query

CREATE TABLE items (id INTEGER PRIMARY KEY, title TEXT);
ALTER TABLE items ADD COLUMN price REAL DEFAULT 0;
INSERT INTO items (id, title, price) VALUES (1, 'Pen', 10);
SELECT * FROM items;

ALTER TABLE changes structure without rebuilding the whole table.

Short notes

DefALTER Table — Meera uses it for a ALTER Table dry-run in a viva board.
RuleALTER Table → one ALTER Table step Meera can write from memory.
RememberALTER Table + InnoDB (a viva board).
UseALTER Table in a viva board (a ALTER Table dry-run).
TrapALTER Table — copy-pasting ALTER Table without a dry-run.
ExALTER Table → a ALTER Table dry-run.

ALTER Table

ALTER Table — sample query

Short notes

Questions

ALTER Table

ALTER Table — sample query

Short notes

Questions