🍲dfcv🏰dd⋉(● ∸ ●)⋊@% PNG %k25u25%fgd5n! PNG %k25u25%fgd5n!# Complete Index Creation Script for MySQL Workbench: for item_serial table

-- ============================================================
-- INDEXES FOR item_serials TABLE
-- Run this in MySQL Workbench on your production database
-- ============================================================

-- First, check current indexes (optional)
SHOW INDEX FROM item_serials;

-- ============================================================
-- 1. PRIMARY INDEX FOR GRN SERIAL LOOKUPS
-- Used by: GRN Controller - validateSerials(), getExistingSerialsBatch()
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_grn_serials_lookup` (`doc_type`, `doc_id`, `item_id`, `active`);

-- ============================================================
-- 2. INDEX FOR SERIAL AVAILABILITY CHECK
-- Used by: GRN, Good Transfer, Invoice Controllers
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_serial_availability` (`item_id`, `serial_no`(50), `multi_store_id`, `active`, `received`, `issued`);

-- ============================================================
-- 3. INDEX FOR GOOD TRANSFER LOOKUPS
-- Used by: GoodTransferNoteController, GRN destroy()
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_serial_good_transfer` (`serial_no`(50), `item_id`, `doc_type`, `active`);

-- ============================================================
-- 4. INDEX FOR GRN ACTIVE SERIALS (edits/updates)
-- Used by: GRN Controller - saveSerialsIfNeeded(), wipeGrnBundles()
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_grn_active_serials` (`doc_type`, `doc_id`, `grn_item_id`, `active`);

-- ============================================================
-- 5. INDEX FOR ISSUED SERIALS CHECK
-- Used by: GRN Controller - validateNoIssuedSerialsRemoved()
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_issued_serials` (`item_id`, `issued`, `active`);

-- ============================================================
-- 6. INDEX FOR COMPANY FILTERING
-- Used by: All controllers for multi-company support
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_serial_company` (`company_id`, `active`);

-- ============================================================
-- 7. INDEX FOR DATE RANGE QUERIES
-- Used by: Reports, audit trails
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_serial_created` (`created_at`);

-- ============================================================
-- 8. COMPOSITE INDEX FOR STORE + STATUS
-- Used by: Stock availability checks
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_store_status` (`multi_store_id`, `active`, `received`, `issued`);

-- ============================================================
-- 9. INDEX FOR SERIAL NUMBER SEARCHES (case-sensitive)
-- Used by: Batch validation queries
-- ============================================================
ALTER TABLE `item_serials` 
ADD INDEX `idx_serial_search` (`serial_no`(50), `item_id`);

-- ============================================================
-- VERIFY ALL INDEXES WERE CREATED
-- ============================================================
SHOW INDEX FROM item_serials;