66 lines
2.8 KiB
MySQL
66 lines
2.8 KiB
MySQL
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-- Data migration: split existing inv_product flat data into pan + bolt records.
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-- Run AFTER 20260403_add_pan_and_bolt.sql but BEFORE 20260403_drop_legacy_columns.sql.
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-- Wrapped in a stored procedure so re-runs on an already-migrated database
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-- (where `location` was already dropped) silently succeed rather than error.
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-- MySQL validates column names at call time, not at CREATE PROCEDURE time,
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-- so the IF guard prevents the INSERTs from running when the column is absent.
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DROP PROCEDURE IF EXISTS _migrate_inv_pan_bolt;
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DELIMITER $$
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CREATE PROCEDURE _migrate_inv_pan_bolt()
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BEGIN
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DECLARE v_has_location TINYINT DEFAULT 0;
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SELECT COUNT(*) INTO v_has_location
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'inv_product'
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AND COLUMN_NAME = 'location';
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IF v_has_location = 1 THEN
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-- Step 1: one default pan per product, position taken from legacy `location`
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INSERT INTO inv_product_pan (pan_id, product_id, name, position, sort_order, tenant_id)
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SELECT
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CONCAT('pan_mig_', product_id),
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product_id,
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'A',
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COALESCE(location, ''),
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1,
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COALESCE(tenant_id, '')
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FROM inv_product
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WHERE deleted_at IS NULL
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AND product_id NOT IN (SELECT DISTINCT product_id FROM inv_product_pan);
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-- Step 2: bolt records, one per unit_piece (or one if unit_pieces = 0)
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INSERT INTO inv_product_bolt (bolt_id, pan_id, length_m, sort_order, tenant_id)
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SELECT
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CONCAT('bolt_mig_', product_id, '_', seq.n),
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CONCAT('pan_mig_', product_id),
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CASE
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WHEN unit_pieces > 0 THEN ROUND(stock_quantity / unit_pieces, 2)
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ELSE stock_quantity
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END,
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seq.n,
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COALESCE(tenant_id, '')
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FROM inv_product
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CROSS JOIN (
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SELECT 1 AS n UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5
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UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9 UNION ALL SELECT 10
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UNION ALL SELECT 11 UNION ALL SELECT 12 UNION ALL SELECT 13 UNION ALL SELECT 14 UNION ALL SELECT 15
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UNION ALL SELECT 16 UNION ALL SELECT 17 UNION ALL SELECT 18 UNION ALL SELECT 19 UNION ALL SELECT 20
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) seq
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WHERE deleted_at IS NULL
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AND stock_quantity > 0
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AND seq.n <= GREATEST(unit_pieces, 1)
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AND CONCAT('pan_mig_', product_id) IN (SELECT pan_id FROM inv_product_pan);
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END IF;
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END$$
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DELIMITER ;
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CALL _migrate_inv_pan_bolt();
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DROP PROCEDURE IF EXISTS _migrate_inv_pan_bolt;
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-- Verification queries (run manually to check)
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-- SELECT COUNT(*) AS pan_count FROM inv_product_pan WHERE pan_id LIKE 'pan_mig_%';
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-- SELECT COUNT(*) AS bolt_count FROM inv_product_bolt WHERE bolt_id LIKE 'bolt_mig_%';
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