Generate insert statement which has same columns of a table in SQL Server - sql

Question

I have wide table with 100 columns.
I need a SP which takes 100 parameters and then does the insert.
I know how to do this manually. But having the table definition and knowing that SP parameters will have exact same name of the table columns, can you think of a better/faster way to generate this stored procedure?

Answer 1

I use SQL to write it for you. Check it out and let me know if it needs any tweaks or if you have any questions.
IF OBJECT_ID('yourTable') IS NOT NULL
DROP TABLE yourTable;
CREATE TABLE yourTable
(
col1 INT,
col2 VARCHAR(100),
col3 NUMERIC(18,2)
)
DECLARE #InputParams VARCHAR(MAX),
#InsertColumns VARCHAR(MAX),
#InsertParams VARCHAR(MAX);
WITH CTE_columns
AS
(
SELECT COLUMN_NAME,
UPPER(DATA_TYPE) data_type,
'(' + CAST(CHARACTER_MAXIMUM_LENGTH AS VARCHAR(10)) + ')' max_length,
CASE
WHEN DATA_TYPE IN ('Numeric','Decimal') THEN CONCAT('(',NUMERIC_PRECISION,',',NUMERIC_SCALE,')')
END prec_scale
--#InsertColumns = COALESCE(#InsertColumns + ',','') + COLUMN_NAME,
FROM INFORMATION_SCHEMA.COLUMNS A
WHERE TABLE_NAME = 'yourTable'
)
SELECT #InputParams = COALESCE(#InputParams + ',','') + CONCAT('#',column_name,' ',data_type,max_length,prec_scale),
#InsertColumns = COALESCE(#InsertColumns + ',','') + COLUMN_NAME,
#InsertParams = COALESCE(#InsertParams + ',','') + '#'+ COLUMN_NAME
FROM CTE_columns
SELECT
'CREATE PROCEDURE dbo.yourProc ' + #InputParams +
' AS
INSERT INTO yourTable(' + #InsertColumns + ')
VALUES (' + #InsertParams + ');
GO'
Results(Formatting isn't great, but it works):
CREATE PROCEDURE dbo.yourProc #col1 INT,#col2 VARCHAR(100),#col3 NUMERIC(18,2) AS
INSERT INTO yourTable(col1,col2,col3)
VALUES (#col1,#col2,#col3);
GO

Answer 2

For this type of scenario, I like to leverage table types.
First, create the table type:
CREATE TYPE [YourType] AS TABLE (columns...)
In C#, populate a DataTable "template" by running this query (using a DataAdapter):
DECLARE #tt AS [YourType]
SELECT * FROM #tt
Then add a row to the table and cycle through the columns to add the necessary values.
Then pass the datatable as a parameter into your procedure:
CREATE PROCEDURE [YourProc]
#tt [YourType] READONLY
AS
BEGIN
--do stuff
END
An added benefit of this approach is that you can pass multiple records into the procedure with a single call.

Answer 3

You can probably quickly modify this for your needs:
Declare #tableName nvarchar(100) = 'aspnet_Membership'
Declare #objectName nvarchar(100) = 'Membership'
DECLARE #newLineChar AS CHAR(2) = CHAR(13) + CHAR(10)
Declare #columnName nvarchar(50)
Declare #dataType nvarchar(50)
Declare #characterLength int
Declare #isNullableString varchar(3)
Declare #ordinalPosition int
Declare #firstSortOrder smallint
Declare #variableTableCreateCode nvarchar(max) = ''
Declare #variableTableDataTypeCode nvarchar(128)
Declare #variableTableSelectCode001 nvarchar(max) = ''
Declare #variableTableSelectCode002 nvarchar(max) = ''
Declare #varableTableInsertIntoCode nvarchar(max) = ''
Declare tbl_ColumnCursor Cursor For
Select colSchema.COLUMN_NAME, colSchema.DATA_TYPE, colSchema.CHARACTER_MAXIMUM_LENGTH, colSchema.IS_NULLABLE , colSchema.ORDINAL_POSITION , FirstSortOrder = CASE WHEN PrimaryKeyDerived.CONSTRAINT_TYPE IS NOT NULL THEN 1 ELSE 2 END
from INFORMATION_SCHEMA.COLUMNS colSchema
LEFT JOIN
(
SELECT
INFORMATION_SCHEMA.COLUMNS.TABLE_NAME
,INFORMATION_SCHEMA.COLUMNS.COLUMN_NAME
,INFORMATION_SCHEMA.TABLE_CONSTRAINTS.CONSTRAINT_TYPE
FROM INFORMATION_SCHEMA.COLUMNS
LEFT OUTER JOIN information_schema.KEY_COLUMN_USAGE
ON
INFORMATION_SCHEMA.COLUMNS.TABLE_NAME=information_schema.KEY_COLUMN_USAGE.TABLE_NAME
AND INFORMATION_SCHEMA.COLUMNS.COLUMN_NAME=information_schema.KEY_COLUMN_USAGE.COLUMN_NAME
LEFT OUTER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS
ON
information_schema.KEY_COLUMN_USAGE.TABLE_NAME=information_schema.TABLE_CONSTRAINTS.TABLE_NAME
AND information_schema.KEY_COLUMN_USAGE.CONSTRAINT_NAME=information_schema.TABLE_CONSTRAINTS.CONSTRAINT_NAME
WHERE CONSTRAINT_TYPE = 'PRIMARY KEY'
) as PrimaryKeyDerived on colSchema.TABLE_NAME = PrimaryKeyDerived.TABLE_NAME and colSchema.COLUMN_NAME = PrimaryKeyDerived.COLUMN_NAME
where colSchema.TABLE_NAME = #tableName
Order By FirstSortOrder , colSchema.ORDINAL_POSITION
Set #variableTableCreateCode = 'declare #' + #objectName + 'Holder table ( ' + #objectName + 'SurrogateKey int , '
Set #variableTableSelectCode001 = 'INSERT INTO #' + #objectName + 'Holder ( '
Set #variableTableSelectCode002 = ' SELECT '
Set #varableTableInsertIntoCode = 'INSERT INTO '+#tableName+' ( '
Open tbl_ColumnCursor
Fetch Next From tbl_ColumnCursor Into #ColumnName, #dataType, #characterLength, #isNullableString, #ordinalPosition , #firstSortOrder
While ##FETCH_STATUS = 0
Begin
print '/#ColumnName/'
print #ColumnName
print ''
print '/##dataType/'
print #dataType
print ''
print '/###isNullableString/'
print #isNullableString
print ''
Select #variableTableDataTypeCode =
case
when #dataType like '%char%' and #characterLength = -1 Then
#dataType+'(max)'
when #dataType like '%char%' and #characterLength = 1 Then
#dataType+'('+convert(varchar(32), #characterLength)+')'
When (#dataType like '%char%') Or (#dataType = 'xml') Or (#dataType like '%text%') Then
#dataType+'('+convert(varchar(32), #characterLength)+')'
Else #dataType
End
Set #variableTableCreateCode = #variableTableCreateCode + ' [' + #columnName + '] ' + #variableTableDataTypeCode +','
select #variableTableSelectCode002 = #variableTableSelectCode002 + 'T.MyEntity.value(''#' + #columnName + ''', '''+#variableTableDataTypeCode+''') AS ' + #columnName + ','
Fetch Next From tbl_ColumnCursor Into #ColumnName, #dataType, #characterLength , #isNullableString , #ordinalPosition , #firstSortOrder
End
Close tbl_ColumnCursor
Deallocate tbl_ColumnCursor
if(DATALENGTH(#variableTableCreateCode) > 0)
BEGIN
select #variableTableCreateCode = LEFT(#variableTableCreateCode, LEN(#variableTableCreateCode) -1)
END
if(DATALENGTH(#variableTableSelectCode002) > 0)
BEGIN
select #variableTableSelectCode002 = LEFT(#variableTableSelectCode002, LEN(#variableTableSelectCode002) -1)
END
Set #variableTableCreateCode = #variableTableCreateCode + #newLineChar + ' ) '
select #variableTableCreateCode
select #variableTableSelectCode001 = #variableTableSelectCode001 + ( SELECT
MyColumns = STUFF
(
(
SELECT ', [' + r.COLUMN_NAME + ']'
FROM INFORMATION_SCHEMA.COLUMNS AS r
WHERE r.TABLE_NAME = tabs.TABLE_NAME
ORDER BY r.ORDINAL_POSITION
FOR XML PATH(''), TYPE
).value('.[1]','nvarchar(max)'),
1,1,''
)
FROM INFORMATION_SCHEMA.TABLES AS tabs
/* Optional WHERE Clause */
WHERE
tabs.TABLE_NAME = #tableName
)
select #variableTableSelectCode001 = #variableTableSelectCode001 + ' ) '+#newLineChar
select #variableTableSelectCode002 = #variableTableSelectCode002 + ' FROM #xmldata.nodes(''RootElement/' + #tableName + 'Elements/' + #tableName + 'Element'') AS T(MyEntity); '
select #variableTableSelectCode001 + #variableTableSelectCode002
select #varableTableInsertIntoCode = #varableTableInsertIntoCode + ( SELECT
MyColumns = STUFF
(
(
SELECT ', [' + r.COLUMN_NAME + ']'
FROM INFORMATION_SCHEMA.COLUMNS AS r
WHERE r.TABLE_NAME = tabs.TABLE_NAME
ORDER BY r.ORDINAL_POSITION
FOR XML PATH(''), TYPE
).value('.[1]','nvarchar(max)'),
1,1,''
)
FROM INFORMATION_SCHEMA.TABLES AS tabs
WHERE
tabs.TABLE_NAME = #tableName
)
select #varableTableInsertIntoCode = #varableTableInsertIntoCode + ' ) SELECT '
select #varableTableInsertIntoCode = #varableTableInsertIntoCode + ( SELECT
MyColumns = STUFF
(
(
SELECT ', holder.[' + r.COLUMN_NAME + ']'
FROM INFORMATION_SCHEMA.COLUMNS AS r
WHERE r.TABLE_NAME = tabs.TABLE_NAME
ORDER BY r.ORDINAL_POSITION
FOR XML PATH(''), TYPE
).value('.[1]','nvarchar(max)'),
1,1,''
)
FROM INFORMATION_SCHEMA.TABLES AS tabs
WHERE
tabs.TABLE_NAME = #tableName
)
select #varableTableInsertIntoCode = #varableTableInsertIntoCode + ' from #' + #objectName + 'Holder holder where not exists ( select null from ' +#tableName+ ' realTable where realTable.Name = holder.Name and realTable.IsDeleted = holder.IsDeleted ) '
select #varableTableInsertIntoCode
SELECT
tabs.TABLE_NAME,
MyColumns = STUFF
(
(
SELECT ', alias.[' + r.COLUMN_NAME + ']'
FROM INFORMATION_SCHEMA.COLUMNS AS r
WHERE r.TABLE_NAME = tabs.TABLE_NAME
ORDER BY r.ORDINAL_POSITION
FOR XML PATH(''), TYPE
).value('.[1]','nvarchar(max)'),
1,1,''
)
FROM INFORMATION_SCHEMA.TABLES AS tabs
/* Optional WHERE Clause */
WHERE
tabs.TABLE_NAME = #tableName
ORDER BY tabs.TABLE_NAME;