Query Optimization Tips
SELECT *, ki, JAGAH, SPECIFIC, columns, SELECT, karna, — network, transfer, aur, memory, usage, kam, karta hai. WHERE, clause, mein, functions, (jaise, YEAR(date_column)), indexes, ko, USE, hone, se, ROKТE, HAIN — INSTEAD, RANGE, conditions, use, karo.
LIMIT, se, results, ko, RESTRICT, karna, — especially, pagination, ke, liye. N+1, query, problem, (loop, mein, queries) ko, AVOID, karके, JOINS, YA, batch, queries, use, karo.
-- BAD — function, PAR, WHERE, index, use, nahi, hoga:
-- SELECT * FROM orders WHERE YEAR(created_at) = 2024;
-- GOOD — range, condition, index, USE, kar, sakti, hai:
SELECT * FROM orders WHERE created_at >= '2024-01-01' AND created_at < '2025-01-01';- SELECT *, ke, bajaye, specific, columns, select, karo
- WHERE, mein, functions, wrap, karna, avoid, karo — indexes, use, nahi, ho, paate
- slow_query_log, se, production, mein, slow, queries, IDENTIFY, ki, ja, sakti, HAIN
SELECT *, extra, network, bandwidth, use, karta hai, aur, agar, TABLE, mein, BAAD, mein, columns, ADD, hote, HAIN, application, code, unexpected, DATA, RECEIVE, kar, sakta hai. Explicit, column, list, MORE, PREDICTABLE, hai.
-- BEHTAR:
SELECT id, name, email FROM users WHERE status = 'active';Loop, mein, EK-EK, karke, queries, RUN, karne, (N+1, problem) ke, BAJAYE, WHERE id IN (...), se, BATCH, mein, saara, data, EK, hi, query, mein, FETCH, karna, MUCH, EFFICIENT, hai.