programmatically generate script for a table - sql-server

Question

I learned how to generate script for a table.
Eg for this table:
to generate script like this (I omitted something):
CREATE TABLE [dbo].[singer_and_album](
[singer] [varchar](50) NULL,
[album_title] [varchar](100) NULL
) ON [PRIMARY]
GO
INSERT [dbo].[test_double_quote] ([singer], [album_title]) VALUES (N'Adale', N'19')
GO
INSERT [dbo].[test_double_quote] ([singer], [album_title]) VALUES (N'Michael Jaskson', N'Thriller"')
GO
I tried programmatically generating the script using this shell code. And got error:
PS
SQLSERVER:\SQL\DESKTOP-KHTRJOJ\MSSQL\Databases\yzhang\Tables\dbo.test_double_quote>
C:\Users\yzhang\Documents\script_out_table.ps1 "DESKTOP-KHTRJOJ\MSSQL"
"yzhang" "dbo" "test_double_quote",
"C:\Users\yzhang\Documents\script_out.sql"
Multiple ambiguous overloads found for "EnumScript" and the argument
count: "1". At C:\Users\yzhang\Documents\script_out_table.ps1:41
char:16
+ foreach ($s in $scripter.EnumScript($tbl.Urn)) { write-host $s }
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodException
+ FullyQualifiedErrorId : MethodCountCouldNotFindBest
Anybody can help? I don't know much about shell.
btw is shell the only way to generate scripts? Can we do it with some sql code? Thank you--
FYI, see this for how to manually generate script. In my case (sql server 2016 management studio) it's like
right click the database name (not table name) -> Tasks -> Generate scripts
choose a table or all tables
click advanced and select schema and data

Answer 1

this is a sql script to genrate table script
declare #vsSQL varchar(8000)
declare #vsTableName varchar(50)
select #vsTableName = '_PRODUCT'--- Your Table Name here
select #vsSQL = 'CREATE TABLE ' + #vsTableName + char(10) + '(' + char(10)
select #vsSQL = #vsSQL + ' ' + sc.Name + ' ' +
st.Name +
case when st.Name in ('varchar','varchar','char','nchar') then '(' + cast(sc.Length as varchar) + ') ' else ' ' end +
case when sc.IsNullable = 1 then 'NULL' else 'NOT NULL' end + ',' + char(10)
from sysobjects so
join syscolumns sc on sc.id = so.id
join systypes st on st.xusertype = sc.xusertype
where so.name = #vsTableName
order by
sc.ColID
select substring(#vsSQL,1,len(#vsSQL) - 2) + char(10) + ')'
Edit: c# code
public string GetScript(string strConnectionString
, string strObject
, int ObjType)
{
string strScript = null;
int intCounter = 0;
if (ObjType != 0)
{
ObjSqlConnection = new SqlConnection(strConnectionString.Trim());
try
{
ObjDataSet = new DataSet();
ObjSqlCommand = new SqlCommand("exec sp_helptext
[" + strObject + "]", ObjSqlConnection);
ObjSqlDataAdapter = new SqlDataAdapter();
ObjSqlDataAdapter.SelectCommand = ObjSqlCommand;
ObjSqlDataAdapter.Fill(ObjDataSet);
foreach (DataRow ObjDataRow in ObjDataSet.Tables[0].Rows)
{
strScript += Convert.ToString(ObjDataSet.Tables[0].Rows[intCounter][0]);
intCounter++;
}
}
catch (Exception ex)
{
strScript = ex.Message.ToString();
}
finally
{
ObjSqlDataAdapter = null;
ObjSqlCommand = null;
ObjSqlConnection = null;
}
}
return strScript;
}
To create Insert script use this store procedure
IF EXISTS (SELECT * FROM dbo.sysobjects
WHERE id = OBJECT_ID(N'[dbo].[InsertGenerator]') AND OBJECTPROPERTY(id,N'IsProcedure') = 1)
DROP PROCEDURE [dbo].[InsertGenerator]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF
GO
CREATE PROC [dbo].[InsertGenerator]
(
#tableName varchar(100),
#KeyColumn1 varchar(100)='',
#KeyColumn2 varchar(100)=''
)
AS
-- Generating INSERT statements in SQL Server
-- to validate if record exists - supports 2 field Unique index
--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(max) --for storing the first half of INSERT statement
DECLARE #stringData nvarchar(max) --for storing the data (VALUES) related statement
DECLARE #dataType nvarchar(1000) --data types returned for respective columns
DECLARE #FieldVal nvarchar(1000) -- save value for the current field
DECLARE #KeyVal nvarchar(1000) -- save value for the current field
DECLARE #KeyTest0 nvarchar(1000) -- used to test if key exists
DECLARE #KeyTest1 nvarchar(1000) -- used to test if key exists
DECLARE #KeyTest2 nvarchar(1000) -- used to test if key exists
SET #KeyTest0=''
IF #KeyColumn1<>''
SET #KeyTest0='IF not exists (Select * from '+#tableName
SET #KeyTest1=''
SET #KeyTest2=''
SET #string='INSERT '+#tableName+'('
SET #stringData=''
SET #FieldVal=''
SET #KeyVal=''
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 #FieldVal=''''+'''+isnull('''''+'''''+'+#colName+'+'''''+''''',''NULL'')+'',''+'
SET #KeyVal='''+isnull('''''+'''''+'+#colName+'+'''''+''''',''NULL'')+'',''+'
SET #stringData=#stringData+#FieldVal
END
ELSE
if #dataType in ('text','ntext','xml') --if the datatype is text or something else
BEGIN
SET #FieldVal='''''''''+isnull(cast('+#colName+' as varchar(max)),'''')+'''''',''+'
SET #stringData=#stringData+#FieldVal
END
ELSE
IF #dataType = 'money' --because money doesn't get converted from varchar implicitly
BEGIN
SET #FieldVal='''convert(money,''''''+isnull(cast('+#colName+' as varchar(200)),''0.0000'')+''''''),''+'
SET #stringData=#stringData+#FieldVal
END
ELSE
IF #dataType='datetime'
BEGIN
SET #FieldVal='''convert(datetime,'+'''+isnull('''''+'''''+convert(varchar(200),'+#colName+',121)+'''''+''''',''NULL'')+'',121),''+'
SET #stringData=#stringData+#FieldVal
END
ELSE
IF #dataType='image'
BEGIN
SET #FieldVal='''''''''+isnull(cast(convert(varbinary,'+#colName+') as varchar(6)),''0'')+'''''',''+'
SET #stringData=#stringData+#FieldVal
END
ELSE --presuming the data type is int,bit,numeric,decimal
BEGIN
SET #FieldVal=''''+'''+isnull('''''+'''''+convert(varchar(200),'+#colName+')+'''''+''''',''NULL'')+'',''+'
SET #KeyVal='''+isnull('''''+'''''+convert(varchar(200),'+#colName+')+'''''+''''',''NULL'')+'',''+'
SET #stringData=#stringData+#FieldVal
END
--Build key test
IF #KeyColumn1=#colName
begin
SET #KeyTest1 = ' WHERE [' + #KeyColumn1 + ']='
SET #KeyTest1 = #KeyTest1+#KeyVal+']'
end
IF #KeyColumn2=#colName
begin
SET #KeyTest2 = ' AND [' + #KeyColumn2 + ']='
SET #KeyTest2 = #KeyTest2+#KeyVal+']'
end
SET #string=#string+'['+#colName+'],'
FETCH NEXT FROM cursCol INTO #colName,#dataType
END
DECLARE #Query nvarchar(max)
-- Build the test string to check if record exists
if #KeyTest0<>''
begin
if #Keycolumn1<>''
SET #KeyTest0 = #KeyTest0 + substring(#KeyTest1,0,len(#KeyTest1)-4)
if #Keycolumn2<>''
begin
SET #KeyTest0 = #KeyTest0 + ''''
SET #KeyTest0 = #KeyTest0 + substring(#KeyTest2,0,len(#KeyTest2)-4)
end
SET #KeyTest0 = #KeyTest0 + ''')'
SET #query ='SELECT '''+substring(#KeyTest0,0,len(#KeyTest0)) + ') '
end
else
SET #query ='SELECT '''+substring(#KeyTest0,0,len(#KeyTest0))
SET #query = #query + substring(#string,0,len(#string)) + ') '
SET #query = #query + 'VALUES(''+ ' + substring(#stringData,0,len(#stringData)-2)+'''+'')'' FROM '+#tableName
exec sp_executesql #query
CLOSE cursCol
DEALLOCATE cursCol
GO
and use of InsertGenerator like below
DECLARE #return_value int
EXEC #return_value = [dbo].[InsertGenerator]
#tableName = N'_PRODUCT'
SELECT 'Return Value' = #return_value