In SQL Server, how do I generate a CREATE TABLE statement for a given table?

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I\'ve spent a good amount of time coming up with solution to this problem, so in the spirit of this post, I\'m posting it here, since I think it might be useful to others. <

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盖世英雄少女心

2020-11-22 11:58

-- or you could create a stored procedure ... first with Id creation

USE [db]
GO

/****** Object:  StoredProcedure [dbo].[procUtils_InsertGeneratorWithId]    Script Date: 06/13/2009 22:18:11 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


create PROC [dbo].[procUtils_InsertGeneratorWithId]    
(    
@domain_user varchar(50),    
@tableName varchar(100)    
)     


as    

--Declare a cursor to retrieve column specific information for the specified table    
DECLARE cursCol CURSOR FAST_FORWARD FOR     
SELECT column_name,data_type FROM information_schema.columns WHERE table_name = @tableName    
OPEN cursCol    
DECLARE @string nvarchar(3000) --for storing the first half of INSERT statement    
DECLARE @stringData nvarchar(3000) --for storing the data (VALUES) related statement    
DECLARE @dataType nvarchar(1000) --data types returned for respective columns    
DECLARE @IDENTITY_STRING nvarchar ( 100 )    
SET @IDENTITY_STRING = ' '     
select  @IDENTITY_STRING    
SET @string='INSERT '+@tableName+'('    
SET @stringData=''    

DECLARE @colName nvarchar(50)    

FETCH NEXT FROM cursCol INTO @colName,@dataType    

IF @@fetch_status<>0    
 begin    
 print 'Table '+@tableName+' not found, processing skipped.'    
 close curscol    
 deallocate curscol    
 return    
END    

WHILE @@FETCH_STATUS=0    
BEGIN    
IF @dataType in ('varchar','char','nchar','nvarchar')    
BEGIN    
 --SET @stringData=@stringData+'''''''''+isnull('+@colName+','''')+'''''',''+'    
 SET @stringData=@stringData+''''+'''+isnull('''''+'''''+'+@colName+'+'''''+''''',''NULL'')+'',''+'    
END    
ELSE    
if @dataType in ('text','ntext') --if the datatype is text or something else     
BEGIN    
 SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(2000)),'''')+'''''',''+'    
END    
ELSE    
IF @dataType = 'money' --because money doesn't get converted from varchar implicitly    
BEGIN    
 SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'    
END    
ELSE     
IF @dataType='datetime'    
BEGIN    
 --SET @stringData=@stringData+'''convert(datetime,''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+''''''),''+'    
 --SELECT 'INSERT Authorizations(StatusDate) VALUES('+'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations    
 --SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'    
 SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+'    
  --                             'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations    
END    
ELSE     
IF @dataType='image'     
BEGIN    
 SET @stringData=@stringData+'''''''''+isnull(cast(convert(varbinary,'+@colName+') as varchar(6)),''0'')+'''''',''+'    
END    
ELSE --presuming the data type is int,bit,numeric,decimal     
BEGIN    
 --SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+'''''',''+'    
 --SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+'    
 SET @stringData=@stringData+''''+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+')+'''''+''''',''NULL'')+'',''+'    
END    

SET @string=@string+@colName+','    

FETCH NEXT FROM cursCol INTO @colName,@dataType    
END    
DECLARE @Query nvarchar(4000)    

SET @query ='SELECT '''+substring(@string,0,len(@string)) + ') VALUES(''+ ' + substring(@stringData,0,len(@stringData)-2)+'''+'')'' FROM '+@tableName    
exec sp_executesql @query    
--select @query    

CLOSE cursCol    
DEALLOCATE cursCol    


  /*
USAGE

*/

GO

-- and second without iD INSERTION

USE [db]
GO

/****** Object:  StoredProcedure [dbo].[procUtils_InsertGenerator]    Script Date: 06/13/2009 22:20:52 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROC [dbo].[procUtils_InsertGenerator]        
(        
@domain_user varchar(50),        
@tableName varchar(100)        
)         


as        

--Declare a cursor to retrieve column specific information for the specified table        
DECLARE cursCol CURSOR FAST_FORWARD FOR         


-- SELECT column_name,data_type FROM information_schema.columns WHERE table_name = @tableName        
/* NEW     
SELECT c.name , sc.data_type  FROM sys.extended_properties AS ep                   
INNER JOIN sys.tables AS t ON ep.major_id = t.object_id                   
INNER JOIN sys.columns AS c ON ep.major_id = c.object_id AND ep.minor_id                   
= c.column_id                   
INNER JOIN INFORMATION_SCHEMA.COLUMNS sc ON t.name = sc.table_name and                   
c.name = sc.column_name                   
WHERE t.name = @tableName and c.is_identity=0      
  */      

select object_name(c.object_id) "TABLE_NAME", c.name "COLUMN_NAME", s.name "DATA_TYPE"      
  from sys.columns c          
  join sys.systypes s on (s.xtype = c.system_type_id)          
  where object_name(c.object_id) in (select name from sys.tables where name not like 'sysdiagrams')          
   AND object_name(c.object_id) in (select name from sys.tables where [name]=@tableName  ) and c.is_identity=0 and s.name not like 'sysname'  




OPEN cursCol        
DECLARE @string nvarchar(3000) --for storing the first half of INSERT statement        
DECLARE @stringData nvarchar(3000) --for storing the data (VALUES) related statement        
DECLARE @dataType nvarchar(1000) --data types returned for respective columns        
DECLARE @IDENTITY_STRING nvarchar ( 100 )        
SET @IDENTITY_STRING = ' '         
select  @IDENTITY_STRING        
SET @string='INSERT '+@tableName+'('        
SET @stringData=''        

DECLARE @colName nvarchar(50)        

FETCH NEXT FROM cursCol INTO @tableName , @colName,@dataType        

IF @@fetch_status<>0        
 begin        
 print 'Table '+@tableName+' not found, processing skipped.'        
 close curscol        
 deallocate curscol        
 return        
END        

WHILE @@FETCH_STATUS=0        
BEGIN        
IF @dataType in ('varchar','char','nchar','nvarchar')        
BEGIN        
 --SET @stringData=@stringData+'''''''''+isnull('+@colName+','''')+'''''',''+'        
 SET @stringData=@stringData+''''+'''+isnull('''''+'''''+'+@colName+'+'''''+''''',''NULL'')+'',''+'        
END        
ELSE        
if @dataType in ('text','ntext') --if the datatype is text or something else         
BEGIN        
 SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(2000)),'''')+'''''',''+'        
END        
ELSE        
IF @dataType = 'money' --because money doesn't get converted from varchar implicitly        
BEGIN        
 SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'        
END        
ELSE         
IF @dataType='datetime'        
BEGIN        
 --SET @stringData=@stringData+'''convert(datetime,''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+''''''),''+'        
 --SELECT 'INSERT Authorizations(StatusDate) VALUES('+'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations        
 --SET @stringData=@stringData+'''convert(money,''''''+isnull(cast('+@colName+' as varchar(200)),''0.0000'')+''''''),''+'        
 SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+'        
  --                             'convert(datetime,'+isnull(''''+convert(varchar(200),StatusDate,121)+'''','NULL')+',121),)' FROM Authorizations        
END        
ELSE         
IF @dataType='image'         
BEGIN        
 SET @stringData=@stringData+'''''''''+isnull(cast(convert(varbinary,'+@colName+') as varchar(6)),''0'')+'''''',''+'        
END        
ELSE --presuming the data type is int,bit,numeric,decimal         
BEGIN        
 --SET @stringData=@stringData+'''''''''+isnull(cast('+@colName+' as varchar(200)),''0'')+'''''',''+'        
 --SET @stringData=@stringData+'''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+',121)+'''''+''''',''NULL'')+'',121),''+'        
 SET @stringData=@stringData+''''+'''+isnull('''''+'''''+convert(varchar(200),'+@colName+')+'''''+''''',''NULL'')+'',''+'        
END        

SET @string=@string+@colName+','        

FETCH NEXT FROM cursCol INTO @tableName , @colName,@dataType        
END        
DECLARE @Query nvarchar(4000)        

SET @query ='SELECT '''+substring(@string,0,len(@string)) + ') VALUES(''+ ' + substring(@stringData,0,len(@stringData)-2)+'''+'')'' FROM '+@tableName        
exec sp_executesql @query        
--select @query       

CLOSE cursCol        
DEALLOCATE cursCol        


  /*      

use poc     
go    

DECLARE @RC int      
DECLARE @domain_user varchar(50)      
DECLARE @tableName varchar(100)      

-- TODO: Set parameter values here.      
set @domain_user='yorgeorg'      
set @tableName = 'tbGui_WizardTabButtonAreas'      

EXECUTE @RC = [POC].[dbo].[procUtils_InsertGenerator]       
   @domain_user      
  ,@tableName      

*/
GO

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广开言路

2020-11-22 12:01

Support for schemas:

This is an updated version that amends the great answer from David, et al. Added is support for named schemas. It should be noted this may break if there's actually tables of the same name present within various schemas. Another improvement is the use of the official QuoteName() function.

SELECT 
    t.TABLE_CATALOG,
    t.TABLE_SCHEMA,
    t.TABLE_NAME,
    'create table '+QuoteName(t.TABLE_SCHEMA)+'.' + QuoteName(so.name) + ' (' + LEFT(o.List, Len(o.List)-1) + ');  ' 
        + CASE WHEN tc.Constraint_Name IS NULL THEN '' 
          ELSE 
            'ALTER TABLE ' + QuoteName(t.TABLE_SCHEMA)+'.' + QuoteName(so.name) 
            + ' ADD CONSTRAINT ' + tc.Constraint_Name  + ' PRIMARY KEY ' + ' (' + LEFT(j.List, Len(j.List)-1) + ');  ' 
          END as 'SQL_CREATE_TABLE'
FROM sysobjects so

CROSS APPLY (
    SELECT 
          '  ['+column_name+'] ' 
          +  data_type 
          + case data_type
                when 'sql_variant' then ''
                when 'text' then ''
                when 'ntext' then ''
                when 'decimal' then '(' + cast(numeric_precision as varchar) + ', ' + cast(numeric_scale as varchar) + ')'
              else 
              coalesce(
                '('+ case when character_maximum_length = -1 
                    then 'MAX' 
                    else cast(character_maximum_length as varchar) end 
                + ')','') 
            end 
        + ' ' 
        + case when exists ( 
            SELECT id 
            FROM syscolumns
            WHERE 
                object_name(id) = so.name
                and name = column_name
                and columnproperty(id,name,'IsIdentity') = 1 
          ) then
            'IDENTITY(' + 
            cast(ident_seed(so.name) as varchar) + ',' + 
            cast(ident_incr(so.name) as varchar) + ')'
          else ''
          end 
        + ' ' 
        + (case when IS_NULLABLE = 'No' then 'NOT ' else '' end) 
        + 'NULL ' 
        + case when information_schema.columns.COLUMN_DEFAULT IS NOT NULL THEN 'DEFAULT '+ information_schema.columns.COLUMN_DEFAULT 
          ELSE '' 
          END 
        + ','  -- can't have a field name or we'll end up with XML

    FROM information_schema.columns 
    WHERE table_name = so.name
    ORDER BY ordinal_position
    FOR XML PATH('')
) o (list)

LEFT JOIN information_schema.table_constraints tc on  
    tc.Table_name = so.Name
    AND tc.Constraint_Type  = 'PRIMARY KEY'

LEFT JOIN information_schema.tables t on  
    t.Table_name = so.Name

CROSS APPLY (
    SELECT QuoteName(Column_Name) + ', '
    FROM information_schema.key_column_usage kcu
    WHERE kcu.Constraint_Name = tc.Constraint_Name
    ORDER BY ORDINAL_POSITION
    FOR XML PATH('')
) j (list)

WHERE
    xtype = 'U'
    AND name NOT IN ('dtproperties')
    -- AND so.name = 'ASPStateTempSessions'
;

For use in Management Studio:

One detractor to the sql code above is if you test it using SSMS, long statements aren't easy to read. So, as per this helpful post, here's another version that's somewhat modified to be easier on the eyes after clicking the link of a cell in the grid. The results are more readily identifiable as nicely formatted CREATE TABLE statements for each table in the db.

-- settings
DECLARE @CRLF NCHAR(2)
SET @CRLF = Nchar(13) + NChar(10)
DECLARE @PLACEHOLDER NCHAR(3)
SET @PLACEHOLDER = '{:}'

-- the main query
SELECT 
    t.TABLE_CATALOG,
    t.TABLE_SCHEMA,
    t.TABLE_NAME,
    CAST(
        REPLACE(
            'create table ' + QuoteName(t.TABLE_SCHEMA) + '.' + QuoteName(so.name) + ' (' + @CRLF 
            + LEFT(o.List, Len(o.List) - (LEN(@PLACEHOLDER)+2)) + @CRLF + ');' + @CRLF
            + CASE WHEN tc.Constraint_Name IS NULL THEN '' 
              ELSE
                'ALTER TABLE ' + QuoteName(t.TABLE_SCHEMA) + '.' + QuoteName(so.Name) 
                + ' ADD CONSTRAINT ' + tc.Constraint_Name  + ' PRIMARY KEY (' + LEFT(j.List, Len(j.List) - 1) + ');' + @CRLF
              END,
            @PLACEHOLDER,
            @CRLF
        )
    AS XML) as 'SQL_CREATE_TABLE'
FROM sysobjects so

CROSS APPLY (
    SELECT 
          '   '
          + '['+column_name+'] ' 
          +  data_type 
          + case data_type
                when 'sql_variant' then ''
                when 'text' then ''
                when 'ntext' then ''
                when 'decimal' then '(' + cast(numeric_precision as varchar) + ', ' + cast(numeric_scale as varchar) + ')'
              else 
              coalesce(
                '('+ case when character_maximum_length = -1 
                    then 'MAX' 
                    else cast(character_maximum_length as varchar) end 
                + ')','') 
            end 
        + ' ' 
        + case when exists ( 
            SELECT id 
            FROM syscolumns
            WHERE 
                object_name(id) = so.name
                and name = column_name
                and columnproperty(id,name,'IsIdentity') = 1 
          ) then
            'IDENTITY(' + 
            cast(ident_seed(so.name) as varchar) + ',' + 
            cast(ident_incr(so.name) as varchar) + ')'
          else ''
          end 
        + ' ' 
        + (case when IS_NULLABLE = 'No' then 'NOT ' else '' end) 
        + 'NULL ' 
        + case when information_schema.columns.COLUMN_DEFAULT IS NOT NULL THEN 'DEFAULT '+ information_schema.columns.COLUMN_DEFAULT 
          ELSE '' 
          END 
        + ', ' 
        + @PLACEHOLDER  -- note, can't have a field name or we'll end up with XML

    FROM information_schema.columns where table_name = so.name
    ORDER BY ordinal_position
    FOR XML PATH('')
) o (list)

LEFT JOIN information_schema.table_constraints tc on  
    tc.Table_name = so.Name
    AND tc.Constraint_Type  = 'PRIMARY KEY'

LEFT JOIN information_schema.tables t on  
    t.Table_name = so.Name

CROSS APPLY (
    SELECT QUOTENAME(Column_Name) + ', '
    FROM information_schema.key_column_usage kcu
    WHERE kcu.Constraint_Name = tc.Constraint_Name
    ORDER BY ORDINAL_POSITION
    FOR XML PATH('')
) j (list)

WHERE
    xtype = 'U'
    AND name NOT IN ('dtproperties')
    -- AND so.name = 'ASPStateTempSessions'
;

Not to belabor the point, but here's the functionally equivalent example outputs for comparison:

-- 1 (scripting version)
create table [dbo].[ASPStateTempApplications] (  [AppId] int  NOT NULL ,  [AppName] char(280)  NOT NULL );  ALTER TABLE [dbo].[ASPStateTempApplications] ADD CONSTRAINT PK__ASPState__8E2CF7F908EA5793 PRIMARY KEY  ([AppId]);  

-- 2 (SSMS version)
create table [dbo].[ASPStateTempSessions] (
   [SessionId] nvarchar(88)  NOT NULL , 
   [Created] datetime  NOT NULL DEFAULT (getutcdate()), 
   [Expires] datetime  NOT NULL , 
   [LockDate] datetime  NOT NULL , 
   [LockDateLocal] datetime  NOT NULL , 
   [LockCookie] int  NOT NULL , 
   [Timeout] int  NOT NULL , 
   [Locked] bit  NOT NULL , 
   [SessionItemShort] varbinary(7000)  NULL , 
   [SessionItemLong] image(2147483647)  NULL , 
   [Flags] int  NOT NULL DEFAULT ((0))
);
ALTER TABLE [dbo].[ASPStateTempSessions] ADD CONSTRAINT PK__ASPState__C9F4929003317E3D PRIMARY KEY ([SessionId]);

Detracting factors:

It should be noted that I remain relatively unhappy with this due to the lack of support for indeces other than a primary key. It remains suitable for use as a mechanism for simple data export or replication.

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-上瘾入骨i

2020-11-22 12:01
I realise that it's been a very long time but thought I'd add anyway. If you just want the table, and not the create table statement you could use
```
select into x from db.schema.y where 1=0
```
to copy the table to a new DB
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慢半拍i

2020-11-22 12:05

If the application you are generating the scripts from is a .NET application, you may want to look into using SMO (Sql Management Objects). Reference this SQL Team link on how to use SMO to script objects.

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