sql-server - 在 SQL Server 中生成 **bearer** CREATE TABLE 和 CREATE PROC 语句

Question

我公司的部署流程要求创建流程和表等的SQL脚本是裸露的。

在 SQL Server Management Studio 中生成创建脚本给你的不仅仅是一个简单的脚本，这在这种情况下是不幸的。例如，对于测试表，这是 SSMS 为我生成的:

USE [DemoDB]
GO

/****** Object:  Table [dbo].[example]    Script Date: 08/07/2012 15:46:32 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE TABLE [dbo].[example](
    [fake_row] [int] NULL
) ON [PRIMARY]

GO

那么，我想知道的是:

我能否以某种方式在 SSMS 中的 SQL Server 上运行一个查询，该查询会给我一个脚本，该脚本实际上就是以下内容？

create table example (
    fake_row int
)

Answer 1

您可以使用 information_schema(亚伦……我知道，INFORMATION_SCHEMA ；)创建您自己的“创建表”语句。

我为此编写了一些代码，但它没有使用 INFORMATION_SCHEMA。我知道，如果使用可能计划删除的旧系统表。它还添加了一些附加信息(您可以删除这些信息，因为您不需要它)。只需将表列表放在 @INCLUSIONLIST 中，然后在表所在的数据库中运行它。

SET @INCLUSIONLIST = '|table1|table2|';

SELECT (CASE WHEN rownum = 1 THEN 'CREATE TABLE ['+a.t_name+'] ('
             WHEN c.column_id IS NOT NULL
             THEN '    ['+c.c_name+'] ' +
                  (CASE WHEN CHARINDEX('CHAR', datatype) > 0 THEN datatype+'('+(case when length < 0 then 'max' else cast(length as varchar) end)+')'
                        WHEN CHARINDEX('BINARY', datatype) > 0 THEN datatype+'('+cast(length as varchar)+')'
                        WHEN datatype = 'float' AND precision <> 24 THEN datatype+'('+cast(precision as varchar)+')'
                        WHEN datatype IN ('numeric', 'decimal') AND scale = 0 THEN datatype+'('+cast(precision as varchar)+')'
                        WHEN datatype IN ('numeric', 'decimal') AND scale > 0 THEN datatype+'('+cast(precision as varchar)+','+cast(scale as varchar)+')'
                        ELSE datatype END)+' '+
                  (CASE WHEN c.identity_seed IS NOT NULL
                        THEN 'IDENTITY(' + CAST(identity_seed AS VARCHAR) + ',' + CAST(identity_increment AS VARCHAR) + ') '
                        ELSE '' END) +
                  (CASE WHEN c.is_nullable = 0 THEN 'NOT NULL ' ELSE '' END) +
                  (CASE WHEN c.default_definition IS NOT NULL
                        THEN 'DEFAULT '+default_definition ELSE '' END) +
                  (CASE WHEN max_column_id = column_id AND pk.pk_name IS NULL THEN '' ELSE ',' END)
            WHEN rownum = max_column_id + 2 and pk.pk_name IS NOT NULL
            THEN '    PRIMARY KEY ('+pk.pk_columns+')'
            WHEN rownum = max_column_id + 3 THEN ')  /* CREATE TABLE '+a.t_name+' */'
            WHEN rownum = max_column_id + 4 THEN 'GO'
            WHEN rownum = max_column_id + 5 THEN ''
        END)
 FROM (SELECT t.t_name, rownum, max_column_id
       FROM (SELECT t.name as t_name, MAX(c.column_id) as max_column_id
             FROM sys.columns c join
                  (SELECT * FROM sys.tables WHERE CHARINDEX('|'+name+'|', @INCLUSIONLIST) > 0 ) t 
                  ON c.object_id = t.object_id
             GROUP BY t.name) t join
            (SELECT ROW_NUMBER() OVER (ORDER BY object_id) as rownum FROM sys.columns c) ctr
            ON ctr.rownum <= t.max_column_id + 5
      ) a LEFT OUTER JOIN
      (SELECT t.name as t_name, c.column_id, c.name AS c_name, u.name as datatype,
              ISNULL(baset.name, N'') AS systemtype,
              CAST(CASE WHEN baset.name IN (N'nchar', N'nvarchar') AND c.max_length <> -1
                        THEN c.max_length/2 ELSE c.max_length END AS INT) AS length,
              c.precision AS precision,
              c.scale as scale,
              c.is_nullable,
              dc.definition as default_definition,
              idc.seed_value as identity_seed, idc.increment_value as identity_increment
       FROM sys.tables t JOIN
            sys.all_columns AS c
            ON c.object_id = t.object_id LEFT OUTER JOIN
            sys.types u
            ON u.user_type_id = c.user_type_id LEFT OUTER JOIN
            sys.types baset
            ON baset.user_type_id = c.system_type_id AND 
               baset.user_type_id = baset.system_type_id LEFT OUTER JOIN
            sys.default_constraints dc
            ON c.object_id = dc.parent_object_id AND
               c.column_id = dc.parent_column_id LEFT OUTER JOIN
            sys.identity_columns idc
            ON c.object_id = idc.object_id AND
               c.column_id = idc.column_id
      ) c
      ON a.t_name = c.t_name AND
         c.column_id + 1 = a.rownum LEFT OUTER JOIN
      (SELECT t.name as t_name, kc.name as pk_name, 
              (MAX(CASE WHEN index_column_id = 1 THEN '['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 2 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 3 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 4 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 5 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 6 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 7 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 8 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 9 THEN ','+'['+c.name+']' ELSE '' END) +
               MAX(CASE WHEN index_column_id = 10 THEN ','+'['+c.name+']' ELSE '' END)
              ) as pk_columns
       FROM sys.indexes i JOIN
            sys.key_constraints kc
            ON i.name = kc.name AND
               kc.type = 'PK' JOIN
            sys.tables t
            ON i.object_id = t.object_id JOIN
            sys.index_columns ic
            ON i.object_id = ic.object_id AND
           i.index_id = ic.index_id JOIN
            sys.columns c
            ON ic.index_column_id = c.column_id AND
               ic.object_id = c.object_id
       GROUP BY t.name, kc.name
      ) pk
      ON pk.t_name = a.t_name 
ORDER BY a.t_name, rownum