automaticgeneratecreatetablesql
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--CREATE PROCEDURE gen_createtbl @tbl_name varchar(100)
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--AS
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set nocount on
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--声明游标需要的变量
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declare @tblname varchar(100),
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@colno int,
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@colname varchar(100),
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@IsIdt bit,
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@ispk bit,
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@type varchar(100),
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@length int,
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@decim int,
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@isnull bit,
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@default varchar(100),
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@sql varchar(2000),--for create table
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@sql2 varchar(1000),--for create pk
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@sql3 varchar(1000), --for create CONSTRAINT
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@sql4 varchar(1000),-- for default value
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@sql5 varchar(1000),--for col comments
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@sql6 varchar(1000),--for table comments
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@tbl varchar(100),
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@idx varchar(100),
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@idxp varchar(100),
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@colname2 varchar(100),
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@comments varchar(100),--注释
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@tbcomments varchar(100),
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@col_id int,--索引中该字段的排列位置
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@col_num int,--索引包含的总列数
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@idx_type_desc varchar(100), --索引类型描述
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@is_unique bit --是否唯一
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set @tblname='sbj_retail_store_info'
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set @sql4=''
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--声明一个游标mycursor，select语句中参数的个数必须要和从游标取出的变量名相同
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declare mycursor cursor for
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SELECT 表名 = case when a.colorder=1 then d.name else '' end,
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表说明 = cast((case when a.colorder=1 then isnull(f.value,'') else '' end) as varchar(100)),
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字段序号 = a.colorder,
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字段名 = a.name,
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标识 = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '1'else '' end, --IDENTITY(1,1)
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主键 = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
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SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then 1 else 0 end,
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类型 = b.name,
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--占用字节数 = a.length,
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长度 = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
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小数位数 = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
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允许空 = case when a.isnullable=1 then '1'else '' end,
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默认值 = isnull(e.text,''),
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字段说明 = cast(isnull(g.[value],'') as varchar(100))
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FROM syscolumns a
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left join systypes b on a.xusertype=b.xusertype
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inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
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left join syscomments e on a.cdefault=e.id
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left join sys.extended_properties g on a.id=g.major_id and a.colid=g.minor_id and g.name='MS_Description'
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left join sys.extended_properties f on d.id=f.major_id and f.minor_id=0 and f.name='MS_Description'
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where d.name =@tblname --如果只查询指定表,加上此条件,表名
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order by a.id,a.colorder
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/*create temp table to get the comments*/
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create table #comtmp(
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[sql] varchar(3000)
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)
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/*create temp table to get index info and order*/
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create table #idxtmp(
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[tb_name] varchar(100),
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[idx_name] varchar(100),
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[col_name] varchar(100),
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[col_id] int,
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[idx_type_desc] varchar(100),
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[is_unique] bit)
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insert into #idxtmp
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SELECT
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tab.name AS [tb_name],--[表名],
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idx.name AS [idx_name],--[约束名称],
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col.name AS [col_name],--[约束列名],
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idxCol.key_ordinal AS [col_id],--[索引列顺序]
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idx.type_desc as[idx_type_desc], --[索引类型描述]
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idx.is_unique AS [is_unique] --[是否唯一]
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FROM
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sys.indexes idx
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JOIN sys.index_columns idxCol
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ON (idx.object_id = idxCol.object_id
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AND idx.index_id = idxCol.index_id
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AND idx.is_unique_constraint = 1)
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JOIN sys.tables tab
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ON (idx.object_id = tab.object_id)
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JOIN sys.columns col
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ON (idx.object_id = col.object_id
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AND idxCol.column_id = col.column_id)
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where tab.name=@tblname
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declare mycursor2 cursor for
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select a.[tb_name],a.[idx_name],a.[col_name],a.[col_id],b.[col_num],a.[idx_type_desc],a.[is_unique]
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from #idxtmp a
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left join (select [tb_name], [idx_name],count(1) col_num from #idxtmp group by [tb_name], [idx_name]) b
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on a.tb_name=b.tb_name
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and a.idx_name=b.[idx_name]
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--打开游标
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open mycursor
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--从游标里取出数据赋值到我们刚才声明的2个变量中
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fetch next from mycursor into @tblname,@tbcomments,@colno,@colname,@IsIdt,@ispk,@type,@length,@decim,@isnull,@default,@comments
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--判断游标的状态
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-- 0 fetch语句成功
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---1 fetch语句失败或此行不在结果集中
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---2 被提取的行不存在
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while (@@fetch_status=0)
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begin
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--显示出我们每次用游标取出的值
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--print '游标成功取出一条数据'
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if @colno=1
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begin
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set @tbl=@tblname
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set @sql='CREATE TABLE [dbo].['+@tblname+'](
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['+@colname+'] ['+@type+'] '+(case @isnull when 0 then 'NOT NULL,' else 'NULL,'end)
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set @sql6='EXEC sys.sp_addextendedproperty @name=N'+''''+'MS_Description'+''',@value=N'+''''+@tbcomments+''',@level0type=N'+'''SCHEMA'+''',@level0name=N'+'''dbo'
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+''', @level1type=N'+'''TABLE'+''',@level1name=N'+''''+@tbl+''''
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insert into #comtmp([sql]) values (@sql6)
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-- print @sql6
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set @sql5='EXEC sys.sp_addextendedproperty @name=N'+'''MS_Description'+''', @value=N'+''''+@comments+''',@level0type=N'+''''+'SCHEMA'+''',@level0name=N'
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+'''dbo'+''',@level1type=N'+''''+'TABLE'+''''+',@level1name=N'+''''+@tbl+''', @level2type=N'+''''+'COLUMN'+''','+'@level2name=N'+''''+@colname+''''
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insert into #comtmp([sql]) values (@sql5)
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-- print @sql5
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end
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else
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begin
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set @tbl=@tbl+''
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--去掉ETL_CRC QA_RULE_CHK_FLG QA_MANUAL_FLG CREATE_BY UPDATE_BY 这五个字段
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if @colname in('ETL_CRC','QA_RULE_CHK_FLG','QA_MANUAL_FLG','CREATE_BY','UPDATE_BY')
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begin
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set @sql=@sql+''
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end
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else
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begin
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set @sql=@sql+'
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'+'['+@colname+'] ['+(case @type
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when 'timestamp' then 'bigint'+']'
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when 'varchar' then @type +']' +'('+cast(@length as varchar(10))+')'
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when 'nvarchar' then @type +']' +'('+cast(@length as varchar(10))+')'
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when 'char' then @type +']' +'('+cast(@length as varchar(10))+')'
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when 'decimal' then @type +']'+'('+cast(@length as varchar(10))+','+cast(@decim as varchar(3))+')'
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else @type+']'end )+
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(case @isnull when 0 then ' NOT NULL,' else ' NULL,'end)
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set @sql5='EXEC sys.sp_addextendedproperty @name=N'+'''MS_Description'+''', @value=N'+''''+@comments+''',@level0type=N'+''''+'SCHEMA'+''',@level0name=N'
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+'''dbo'+''',@level1type=N'+''''+'TABLE'+''''+',@level1name=N'+''''+@tbl+''', @level2type=N'+''''+'COLUMN'+''','+'@level2name=N'+''''+@colname+''''
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-- print @sql5
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insert into #comtmp([sql]) values (@sql5)
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end
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end
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If @ispk=1
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begin
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set @sql2='PRIMARY KEY CLUSTERED
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(
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['+@colname+'] ASC
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))
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GO'
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end
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else
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begin
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set @sql2=@sql2+''
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end
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If @default <>'' and @colname not in('ETL_CRC','QA_RULE_CHK_FLG','QA_MANUAL_FLG','CREATE_BY','UPDATE_BY')
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begin
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set @sql4=@sql4+'
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ALTER TABLE [dbo].['+@tbl+'] ADD DEFAULT '+@default+' FOR ['+@colname+']
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GO'
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end
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else
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begin
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set @sql4=@sql4+''
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end
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--用游标去取下一条记录 -
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fetch next from mycursor into @tblname,@tbcomments,@colno,@colname,@IsIdt,@ispk,@type,@length,@decim,@isnull,@default,@comments
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end
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--关闭游标
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close mycursor
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--撤销游标
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DEALLOCATE mycursor
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print @sql
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print @sql2
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print @sql4
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--声明一个游标mycursor，select语句中参数的个数必须要和从游标取出的变量名相同
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--打开游标
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set @idx=0
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open mycursor2
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--从游标里取出数据赋值到我们刚才声明的2个变量中
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fetch next from mycursor2 into @tblname,@idx,@colname2,@col_id,@col_num,@idx_type_desc,@is_unique
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--判断游标的状态
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-- 0 fetch语句成功
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---1 fetch语句失败或此行不在结果集中
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---2 被提取的行不存在
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while (@@fetch_status=0)
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begin
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--显示出我们每次用游标取出的值
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if @idx<>isnull(@idxp,'')
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begin
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set @sql3='ALTER TABLE [dbo].['+@tblname+'] ADD CONSTRAINT ['+@idx+'] '+(case when @is_unique=1 then'UNIQUE 'else '' end) +@idx_type_desc+'
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( ['+@colname2+'] ASC'
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end
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else
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begin
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set @sql3=@sql3+'
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['+@colname2+'] ASC'
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end
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if @col_id< @col_num
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begin
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set @sql3=@sql3+' ,'
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end
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else
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begin
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set @sql3=@sql3+')'
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print @sql3
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end
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--用游标去取下一条记录 -
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set @idxp=@idx
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fetch next from mycursor2 into @tblname,@idx,@colname2,@col_id,@col_num,@idx_type_desc,@is_unique
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end
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--关闭游标
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close mycursor2
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--撤销游标
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DEALLOCATE mycursor2
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if object_id('tempdb..#idxtmp') is not null
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begin
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--select * from #idxtmp
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drop table #idxtmp
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end
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select * from #comtmp
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drop table #comtmp
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set nocount on
- GO
本文标题：automaticgeneratecreatetablesql
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