SQL · Theory

LOCATE()()

Theory

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LOCATE()()

LOCATE()() (str) sits in a campus project. Farhan’s job is Farhan walking through LOCATE str. Write that first.

Do LOCATE()() (str) once by hand. one LOCATE str step Farhan can write from memory. Change one input. Say the new result out loud.

Without LOCATE()() (str), a campus project gets messy and Farhan walking through LOCATE str is hard to trust.

LOCATE()() (str) shows up in a campus project. Name Farhan walking through LOCATE str, not “a real-world scenario”.

LOCATE()() (str) miss — only reciting the name of LOCATE str. Fix it before you talk about advanced SQL.

LOCATE()() (str) is not a lonely heading. Farhan ties it to Farhan walking through LOCATE str.

Close LOCATE()() (str) with: “If I skip it, Farhan walking through LOCATE str goes wrong like this: only reciting the name of LOCATE str.”

Exam tip

Say LOCATE()() (str) in one breath, then one LOCATE str step Farhan can write from memory, then only reciting the name of LOCATE str.

LOCATE()() — sample query

-- LOCATE()()
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;

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

Short notes

DefLOCATE()() (str) — Farhan uses it for Farhan walking through LOCATE str in a campus project.
RuleLOCATE()() (str) → one LOCATE str step Farhan can write from memory.
RememberLOCATE()() (str) + the query planner (a campus project).
UseLOCATE()() (str) in a campus project (Farhan walking through LOCATE str).
TrapLOCATE()() (str) — only reciting the name of LOCATE str.
ExLOCATE()() (str) → Farhan walking through LOCATE str.

-- LOCATE()() 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;

LOCATE()()

LOCATE()() — sample query

Short notes

Questions

LOCATE()()

LOCATE()() — sample query

Short notes

Questions