wuweihua
75 lines
3.0 KiB
SQL
75 lines
3.0 KiB
SQL
-- Add zone fields to bms_product_country (nullable when no zone)
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-- Idempotent: safe to re-run (skip if column/index already exists)
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-- charset: utf8mb4
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SET NAMES utf8mb4;
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SET @db := DATABASE();
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-- zone_id
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SET @has := (
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SELECT COUNT(*) FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND COLUMN_NAME = 'zone_id'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD COLUMN zone_id BIGINT(20) DEFAULT NULL COMMENT ''prc_zone.zone_id'' AFTER country_code',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- zone_code
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SET @has := (
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SELECT COUNT(*) FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND COLUMN_NAME = 'zone_code'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD COLUMN zone_code VARCHAR(50) DEFAULT NULL COMMENT ''zone code e.g. Z1'' AFTER zone_id',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- zone_name
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SET @has := (
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SELECT COUNT(*) FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND COLUMN_NAME = 'zone_name'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD COLUMN zone_name VARCHAR(100) DEFAULT NULL COMMENT ''zone display name'' AFTER zone_code',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- indexes
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SET @has := (
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SELECT COUNT(*) FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND INDEX_NAME = 'idx_product_country_zone'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD INDEX idx_product_country_zone (zone_id)',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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SET @has := (
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SELECT COUNT(*) FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND INDEX_NAME = 'idx_product_country_zone_code'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD INDEX idx_product_country_zone_code (country_code, zone_code)',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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-- unique key: drop old, add new
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SET @has := (
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SELECT COUNT(*) FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND INDEX_NAME = 'uk_product_country_weight_eff'
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);
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SET @sql := IF(@has > 0,
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'ALTER TABLE bms_product_country DROP INDEX uk_product_country_weight_eff',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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SET @has := (
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SELECT COUNT(*) FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'bms_product_country' AND INDEX_NAME = 'uk_product_country_zone_weight_eff'
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);
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SET @sql := IF(@has = 0,
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'ALTER TABLE bms_product_country ADD UNIQUE KEY uk_product_country_zone_weight_eff (product_code, country_name, zone_code, weight_min, weight_max, effective_date)',
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'SELECT 1');
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PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
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