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Show Tables

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Show Tables

SHOW TABLES; lists tables in the current database. USE college; first. SHOW TABLES LIKE 'stu%'; filters names.

information_schema.TABLES is the SQL way if you need to join metadata. For a viva, SHOW TABLES is enough.

Trap — SHOW TABLES in the wrong database — empty list, panic, recreate tables that already exist elsewhere.

On the example next to this theory: Show Tables: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Exam tip

USE college; SHOW TABLES;

Show Tables — sample query

-- Show Tables
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;

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

Short notes

DefSHOW TABLES; lists tables in the USE’d database.
RuleUSE college; first.
TrapLooking in the wrong schema.

-- Show Tables 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;

Show Tables

Show Tables — sample query

Short notes

Questions

Show Tables

Show Tables — sample query

Short notes

Questions