wuzilongandCursor
5357df1cc2
Persist a tenant-scoped fixed serial for driver-plan clipboard text; include migration backfill by create_time. Co-authored-by: Cursor <cursoragent@cursor.com>
35 lines
1.0 KiB
SQL
35 lines
1.0 KiB
SQL
-- 运输计划复制发群固定序号（租户内流水）
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-- MySQL 5.7
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-- 2026-10-09
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-- 若列已存在，跳过 ALTER（重复执行会报 Duplicate column）。
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ALTER TABLE `pl_plan`
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ADD COLUMN `copy_seq_no` int(11) DEFAULT NULL COMMENT '复制发群序号（租户内固定流水，首次复制时分配）' AFTER `plan_no`,
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ADD KEY `idx_pl_plan_tenant_copy_seq` (`tenant_no`, `copy_seq_no`);
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-- 历史回填：按租户 create_time ASC, id ASC，含软删；已有值不覆盖
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-- MySQL 5.7 用户变量按租户编号（会话内执行）
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SET @prev_tenant := NULL;
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SET @rn := 0;
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UPDATE `pl_plan` p
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INNER JOIN (
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SELECT
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t.id,
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t.seq_no
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FROM (
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SELECT
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id,
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tenant_no,
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@rn := IF(@prev_tenant = tenant_no, @rn + 1, 1) AS seq_no,
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@prev_tenant := tenant_no AS _tenant
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FROM (
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SELECT id, tenant_no, create_time
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FROM `pl_plan`
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ORDER BY tenant_no ASC, create_time ASC, id ASC
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) ordered
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) t
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) ranked ON ranked.id = p.id
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SET p.`copy_seq_no` = ranked.seq_no
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WHERE p.`copy_seq_no` IS NULL;
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