78 lines
2.4 KiB
SQL
78 lines
2.4 KiB
SQL
-- 合同编号租户内全局唯一（含软删不复用）— 可重复执行
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-- 1) 消解已有 (contract_no, tenant_no) 撞号：保留 del_flag=0，软删行改号
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-- 2) 唯一索引改为 (contract_no, tenant_no)
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--
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-- 说明：若生产已执行过，旧索引 uk_contract_tenant_no_del 可能已不存在，
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-- 本脚本会先检查再 DROP/ADD，避免 1091。
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SET NAMES utf8mb4;
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-- 软删撞号改号：{原编号}~DEL~{id前8位}
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UPDATE crm_contract c
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INNER JOIN (
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SELECT contract_no, tenant_no
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FROM crm_contract
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GROUP BY contract_no, tenant_no
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HAVING COUNT(*) > 1
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) d ON c.contract_no = d.contract_no AND c.tenant_no = d.tenant_no
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SET c.contract_no = CONCAT(c.contract_no, '~DEL~', LEFT(c.id, 8)),
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c.update_time = NOW()
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WHERE c.del_flag = 1
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AND c.contract_no NOT LIKE '%~DEL~%'
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AND c.contract_no NOT LIKE '%~DUP~%';
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-- 若仍有撞号（极端：两条都 del_flag=0），再改非 keep 的一条
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UPDATE crm_contract c
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INNER JOIN (
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SELECT contract_no, tenant_no, MIN(id) AS keep_id
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FROM crm_contract
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GROUP BY contract_no, tenant_no
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HAVING COUNT(*) > 1
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) d ON c.contract_no = d.contract_no AND c.tenant_no = d.tenant_no AND c.id <> d.keep_id
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SET c.contract_no = CONCAT(c.contract_no, '~DUP~', LEFT(c.id, 8)),
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c.update_time = NOW()
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WHERE c.contract_no NOT LIKE '%~DUP~%';
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-- 有旧索引则删除
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SET @db := DATABASE();
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SET @sql := (
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SELECT IF(
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EXISTS(
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SELECT 1 FROM information_schema.statistics
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WHERE table_schema = @db
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AND table_name = 'crm_contract'
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AND index_name = 'uk_contract_tenant_no_del'
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),
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'ALTER TABLE crm_contract DROP INDEX `uk_contract_tenant_no_del`',
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'SELECT ''skip DROP uk_contract_tenant_no_del'' AS info'
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)
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);
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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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-- 无新索引则添加
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SET @sql := (
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SELECT IF(
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EXISTS(
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SELECT 1 FROM information_schema.statistics
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WHERE table_schema = @db
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AND table_name = 'crm_contract'
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AND index_name = 'uk_contract_tenant_no'
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),
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'SELECT ''skip ADD uk_contract_tenant_no (already exists)'' AS info',
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'ALTER TABLE crm_contract ADD UNIQUE KEY `uk_contract_tenant_no` (`contract_no`, `tenant_no`)'
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)
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);
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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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-- 验收：应为空
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SELECT contract_no, tenant_no, COUNT(*) AS cnt
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FROM crm_contract
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GROUP BY contract_no, tenant_no
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HAVING COUNT(*) > 1;
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SHOW INDEX FROM crm_contract WHERE Key_name LIKE 'uk_contract%';
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