54 lines
1.8 KiB
Transact-SQL
54 lines
1.8 KiB
Transact-SQL
-- =====================================================================
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-- 安全巡检记录表：增加 编码(Code) 字段
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-- 说明：编码全局唯一（前缀 XJ- + 三位递增序号，如 XJ-001）。
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-- 移动端/桌面端新增时由服务自动生成，编码不可重复。
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-- 幂等：若列已存在则跳过；若唯一索引已存在则跳过，可重复执行。
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-- =====================================================================
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-- 编码列
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IF NOT EXISTS (
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SELECT 1 FROM sys.columns
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WHERE object_id = OBJECT_ID(N'[dbo].[HSSE_SafetyPatrol]') AND name = N'Code'
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)
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BEGIN
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ALTER TABLE [dbo].[HSSE_SafetyPatrol] ADD [Code] nvarchar(50) COLLATE Chinese_PRC_CI_AS NULL;
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END
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GO
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-- 为已有记录回填编码（按巡检日期升序，序号从 1 开始，前缀 XJ-）
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UPDATE c
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SET c.Code = N'XJ-' + FORMAT(t.rn, 'D3')
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FROM [dbo].[HSSE_SafetyPatrol] c
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INNER JOIN (
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SELECT PatrolId,
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ROW_NUMBER() OVER (ORDER BY PatrolDate, PatrolId) AS rn
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FROM [dbo].[HSSE_SafetyPatrol]
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WHERE Code IS NULL
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) t ON c.PatrolId = t.PatrolId;
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GO
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-- 编码唯一索引
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IF NOT EXISTS (
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SELECT 1 FROM sys.indexes
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WHERE object_id = OBJECT_ID(N'[dbo].[HSSE_SafetyPatrol]') AND name = N'UX_HSSE_SafetyPatrol_Code'
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)
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BEGIN
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CREATE UNIQUE INDEX [UX_HSSE_SafetyPatrol_Code]
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ON [dbo].[HSSE_SafetyPatrol] ([Code]);
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END
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GO
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-- 编码 中文注释（幂等：注释不存在才添加）
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IF NOT EXISTS (
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SELECT 1 FROM sys.extended_properties
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WHERE major_id = OBJECT_ID(N'[dbo].[HSSE_SafetyPatrol]')
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AND minor_id = COLUMNPROPERTY(OBJECT_ID(N'[dbo].[HSSE_SafetyPatrol]'), N'Code', 'ColumnId')
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AND name = N'MS_Description'
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)
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EXEC sp_addextendedproperty
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'MS_Description', N'编码（全局唯一，格式 XJ-序号，自动生成）',
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'SCHEMA', N'dbo',
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'TABLE', N'HSSE_SafetyPatrol',
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'COLUMN', N'Code';
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GO
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