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<#
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从《FMS新系统核心表结构设计》第 16 节生成 sql/fms_workflow.sql
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用法（任意目录均可执行）：
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pwsh -File sql/tools/gen_workflow_sql.ps1
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约定：
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- §16 是表结构的唯一来源；改完文档重跑本脚本，不要手改生成物；
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- 生成物与 sql/fms_core.sql 同风格：GO 分隔、UTF-8 无 BOM；
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- SQL Server 不支持建表内联注释，列注释同时写入扩展属性 MS_Description；
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- 枚举在文档的列注释里按「编码(中文)」书写，脚本原样搬运到注释和扩展属性。
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#>
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[CmdletBinding()]
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param(
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[string]$Doc,
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[string]$Section = '## 16. 工作流与审批',
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[string]$Out
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)
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$ErrorActionPreference = 'Stop'
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$root = Split-Path (Split-Path $PSScriptRoot)
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if (-not $Doc) { $Doc = Join-Path $root 'FMS新系统核心表结构设计.md' }
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if (-not $Out) { $Out = Join-Path $root 'sql\fms_workflow.sql' }
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if (-not (Test-Path -LiteralPath $Doc)) { throw "找不到文档：$Doc" }
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$text = Get-Content -Raw -Encoding UTF8 -LiteralPath $Doc
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$start = $text.IndexOf($Section)
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if ($start -lt 0) { throw "文档中找不到章节：$Section" }
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$sec = $text.Substring($start)
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$buf = [System.Collections.Generic.List[string]]::new()
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$head = @(
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'/* ============================================================================'
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' FMS 工作流与审批表建表脚本（wf_*）'
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''
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' 依据文档：FMS新系统核心表结构设计.md §16 工作流与审批'
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' 语义设计见 FMS工作流与审批设计.md'
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''
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' 使用说明：'
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' 1. 执行前先切换到目标数据库（USE [数据库名]）。'
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' 2. 脚本只建表、索引和说明属性，不含初始化数据。'
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' 3. 不使用外键、CHECK、触发器；关联完整性和业务校验由业务层处理。'
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' 4. SQL Server 不支持建表内联注释，列注释通过扩展属性 MS_Description 持久化，'
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' SSMS 的表设计器和列属性说明直接读取。'
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' 5. 脚本按新建表编写；表已存在时需先删除后重新执行。'
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' ============================================================================ */'
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''
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'SET NOCOUNT ON;'
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'GO'
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''
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)
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[void]$buf.AddRange([string[]]$head)
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$rxSection = [regex]'(?s)### (16\.\d+) ([^\r\n]+)\r?\n.*?```sql\r?\n(.*?)```'
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$tableCount = 0
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$propCount = 0
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foreach ($m in $rxSection.Matches($sec)) {
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$num = $m.Groups[1].Value
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$title = $m.Groups[2].Value.Trim()
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$lines = $m.Groups[3].Value -split '\r?\n'
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$ddl = [System.Collections.Generic.List[string]]::new()
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$idx = [System.Collections.Generic.List[string]]::new()
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$cols = [System.Collections.Generic.List[object]]::new()
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$tbl = ''
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$tblCmt = ''
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$inTable = $false
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for ($i = 0; $i -lt $lines.Count; $i++) {
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$ln = $lines[$i]
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if (-not $inTable -and $ln -match '^create table dbo\.(\w+) \(') {
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$tbl = $Matches[1]
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if ($i -gt 0 -and $lines[$i - 1] -match '^--\s*(.+)$') { $tblCmt = $Matches[1].Trim() }
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$inTable = $true
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$ddl.Add($ln)
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continue
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}
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if ($inTable) {
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$ddl.Add($ln)
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if ($ln -match '^\);\s*$') { $inTable = $false; continue }
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if ($ln -match '^\s*([a-z_][a-z0-9_]*)\s+.*?,\s*--\s*(.+?)\s*$') { $cols.Add([pscustomobject]@{ n = $Matches[1]; c = $Matches[2] }); continue }
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if ($ln -match '^\s*([a-z_][a-z0-9_]*)\s+.*?\s+--\s*(.+?)\s*$') { $cols.Add([pscustomobject]@{ n = $Matches[1]; c = $Matches[2] }); continue }
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continue
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}
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if ($ln -match '^create (unique )?index') { $idx.Add($ln); continue }
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if ($ln -match '^\s+on dbo\.' -and $idx.Count -gt 0) { $idx[$idx.Count - 1] = $idx[$idx.Count - 1] + "`n" + $ln }
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}
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if (-not $tbl) { continue }
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$tableCount++
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$buf.Add('/* ============================================================================')
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$buf.Add(" $num $title")
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$buf.Add(' ============================================================================ */')
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$buf.Add('')
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foreach ($l in $ddl) { $buf.Add($l) }
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$buf.Add('GO'); $buf.Add('')
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foreach ($s in $idx) {
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foreach ($sl in ($s -split "`n")) { $buf.Add($sl) }
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$buf.Add('GO'); $buf.Add('')
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}
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$buf.Add('-- 说明属性（MS_Description）：SSMS 表设计器与列属性说明的来源')
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$val = $tblCmt.Replace("'", "''")
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$buf.Add("exec sys.sp_addextendedproperty @name=N'MS_Description', @value=N'$val',")
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$buf.Add(" @level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'$tbl';")
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$propCount++
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foreach ($c in $cols) {
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$cv = $c.c.Replace("'", "''")
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$buf.Add("exec sys.sp_addextendedproperty @name=N'MS_Description', @value=N'$cv',")
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$buf.Add(" @level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'$tbl', @level2type=N'COLUMN', @level2name=N'$($c.n)';")
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$propCount++
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}
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$buf.Add('GO'); $buf.Add('')
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}
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if ($tableCount -eq 0) { throw "章节 $Section 中没有解析到建表语句" }
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$new = ($buf -join "`r`n") + "`r`n"
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$changed = $true
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if (Test-Path -LiteralPath $Out) {
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$old = [System.IO.File]::ReadAllText($Out, [System.Text.Encoding]::UTF8)
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$changed = ($old -ne $new)
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}
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[System.IO.File]::WriteAllText($Out, $new, (New-Object System.Text.UTF8Encoding($false)))
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$state = if ($changed) { '已更新' } else { '无变化' }
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Write-Output "$state：$Out"
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Write-Output "表 $tableCount 张、说明属性 $propCount 条、生成 $($buf.Count) 行"
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