57 lines
1.9 KiB
SQL
57 lines
1.9 KiB
SQL
-- 预签约订单转正式协议唯一约束
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-- MySQL 5.7；重复执行安全。历史重复或错误同名索引会给出明确修复提示。
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SET NAMES utf8mb4;
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DELIMITER $$
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DROP PROCEDURE IF EXISTS `ensure_presign_convert_unique`$$
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CREATE PROCEDURE `ensure_presign_convert_unique`()
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BEGIN
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DECLARE duplicate_sources INT DEFAULT 0;
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DECLARE idx_entries INT DEFAULT 0;
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DECLARE idx_non_unique INT DEFAULT 1;
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DECLARE idx_columns VARCHAR(512) DEFAULT '';
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SELECT COUNT(*) INTO duplicate_sources
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FROM (
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SELECT `tenant_no`, `source_presign_order_id`
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FROM `biz_collection_protocol`
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WHERE `source_presign_order_id` IS NOT NULL
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AND `source_presign_order_id` <> ''
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GROUP BY `tenant_no`, `source_presign_order_id`
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HAVING COUNT(*) > 1
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) duplicate_rows;
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IF duplicate_sources > 0 THEN
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SIGNAL SQLSTATE '45000'
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SET MESSAGE_TEXT = 'duplicate presign conversions found; remediation: reconcile duplicate formal protocols before rerunning migration';
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END IF;
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SELECT
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COUNT(*),
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COALESCE(MIN(NON_UNIQUE), 1),
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COALESCE(GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX SEPARATOR ','), '')
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INTO idx_entries, idx_non_unique, idx_columns
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FROM information_schema.STATISTICS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'biz_collection_protocol'
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AND INDEX_NAME = 'uk_collection_protocol_presign_source';
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IF idx_entries = 0 THEN
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ALTER TABLE `biz_collection_protocol`
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ADD UNIQUE INDEX `uk_collection_protocol_presign_source`
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(`tenant_no`, `source_presign_order_id`);
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ELSEIF idx_entries <> 2
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OR idx_non_unique <> 0
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OR idx_columns <> 'tenant_no,source_presign_order_id' THEN
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SIGNAL SQLSTATE '45000'
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SET MESSAGE_TEXT = 'wrong index uk_collection_protocol_presign_source; remediation: drop or rename it, then rerun migration';
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END IF;
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END$$
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CALL `ensure_presign_convert_unique`()$$
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DROP PROCEDURE `ensure_presign_convert_unique`$$
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DELIMITER ;
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