caojia
50 lines
1.8 KiB
SQL
50 lines
1.8 KiB
SQL
-- 应收账单转单号快照迁移
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-- 适用于已经执行过 ar/ar_bill.sql 的存量数据库。
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-- 本脚本可重复执行，不删除账单明细，不覆盖已经存在的转单号快照。
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SET NAMES utf8mb4;
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SET @db_name := DATABASE();
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-- 1. 账单明细保存生成账单时的转单号快照。
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SET @has_transfer_no := (
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SELECT COUNT(*)
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @db_name
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AND TABLE_NAME = 'ar_bill_detail'
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AND COLUMN_NAME = 'transfer_no'
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);
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SET @sql := IF(@has_transfer_no = 0,
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'ALTER TABLE ar_bill_detail ADD COLUMN transfer_no VARCHAR(64) DEFAULT NULL COMMENT ''转单号快照'' AFTER tracking_no',
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'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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-- 2. 详情按账单查询转单号时使用组合索引。
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SET @has_transfer_index := (
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SELECT COUNT(*)
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FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = @db_name
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AND TABLE_NAME = 'ar_bill_detail'
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AND INDEX_NAME = 'idx_ar_bill_detail_bill_transfer_no'
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);
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SET @sql := IF(@has_transfer_index = 0,
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'ALTER TABLE ar_bill_detail ADD KEY idx_ar_bill_detail_bill_transfer_no (ar_bill_id, transfer_no)',
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'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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-- 3. 历史数据尽力回填，仅填充空值，不覆盖账单生成时已经保存的快照。
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-- 如果来源订单后续修改过转单号，回填值仅代表当前来源表值，不能视为严格历史值。
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UPDATE ar_bill_detail d
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JOIN prc_order_bill p ON p.bill_id = d.prc_order_bill_id
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SET d.transfer_no = p.transfer_no
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WHERE d.transfer_no IS NULL
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AND p.transfer_no IS NOT NULL;
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-- 4. 执行后核验字段和回填数量。
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SELECT
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COUNT(*) AS detail_count,
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SUM(CASE WHEN transfer_no IS NOT NULL AND TRIM(transfer_no) <> '' THEN 1 ELSE 0 END) AS transfer_no_count
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FROM ar_bill_detail;
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