SQL Server and Excel Data Import and Export

How to import/export Excel files from SQL Server

/* = ======= */

To import data from an Excel file to a SQL database, you can simply use the following statement:

/* ===================================================== ===================================== */
-- If the table to be imported already exists
Insert into Table select * from
OPENROWSET ('Microsoft. JET. OLEDB.4.0'
, 'Excel 5.0; HDR = YES; DATABASE = c: test.xls ', sheet1 $)

-- If you import data and generate a table
Select * into table from
OPENROWSET ('Microsoft. JET. OLEDB.4.0'
, 'Excel 5.0; HDR = YES; DATABASE = c: test.xls ', sheet1 $)

/* ===================================================== ===================================== */
-- If you export data from the SQL database to Excel, And the Excel file already exists, and you have created a header based on the data to be received, you can simply use it:
Insert into OPENROWSET ('Microsoft. JET. OLEDB.4.0'
, 'Excel 5.0; HDR = YES; DATABASE = c: test.xls ', sheet1 $)
Select * from table

-- If the Excel file does not exist, you can use BCP to import Excel-like files. Note the case sensitivity:
-- Export tables
EXEC master.. xp_mongoshell 'bcp database name. dbo. Table name out "c: test.xls"/c-/S "server name"/U "username"-P "password "'

-- Export Query Information
EXEC master .. xp_cmdshell 'bcp "SELECT au_fname, au_lname FROM pubs .. authors order by au_lname "queryout" c: test.xls "/c-/S" server name "/U" username "-P" password "'

/* -- Description:
C: test.xls is the Excel file name for import/export.
Sheet1 $ is the worksheet name of the Excel file. You must add $ to use it normally.
--*/
-- As mentioned above, BCP is used to export Excel-like files, whose essence is text files,

-- To export a real Excel file, use the following method:

/* -- Data export EXCEL

Export the table data to Excel, including the field name. The file is a real Excel file.
If the file does not exist, the file is automatically created.
If the table does not exist, the table is automatically created.
Only standard data types can be exported for the sake of universality.
*/

/* -- Call example

P_exporttb @ tbname = 'region information', @ path = 'C: ',@fname='aa.xls'
--*/
If exists (select * from dbo. sysobjects where id = object_id (n' [dbo]. [p_exporttb] ') and OBJECTPROPERTY (id, n' IsProcedure') = 1)
Drop procedure [dbo]. [p_exporttb]
GO

Create proc p_exporttb
@ Tbname sysname, -- Name of the table to be exported
@ Path nvarchar (1000), -- file storage directory
@ Fname nvarchar (250) = ''-- file name. The default value is table name.
As
Declare @ err int, @ src nvarchar (255), @ desc nvarchar (255), @ out int
Declare @ obj int, @ constr nvarchar (1000), @ SQL varchar (8000), @ fdlist varchar (8000)

-- Parameter detection
If isnull (@ fname, '') = ''set @fname=@tbname='.xls'

-- Check whether the file already exists
If right (@ path, 1) <> ''set @ path = @ path +''
Create table # tb (a bit, B bit, c bit)
Set @ SQL = @ path + @ fname
Insert into # tb exec master .. xp_fileexist @ SQL

-- Database creation statement
Set @ SQL = @ path + @ fname
If exists (select 1 from # tb where a = 1)
Set @ constr = 'driver = {Microsoft Excel DRIVER (*. xls)}; DSN = '''; READONLY = false'
+ '; CREATE_DB = "+'; DATABASE = '+ @ SQL + '"'

-- Connect to the database
Exec @ err = sp_oacreate 'ADODB. connection', @ obj out
If @ err <> 0 goto lberr

Exec @ err = sp_oamethod @ obj, 'open', null, @ constr
If @ err <> 0 goto lberr

/* -- If the existing table is overwritten, add the following statement.
-- Delete the table before creating the table./If the table exists
Select @ SQL = 'drop table ['+ @ tbname +']'
Exec @ err = sp_oamethod @ obj, 'execute ', @ out, @ SQL
--*/

-- SQL statement used to create a table
Select @ SQL = '', @ fdlist =''
Select @ fdlist = @ fdlist + ', [' + a. name + ']'
, @ SQL = @ SQL + ', [' + a. name + ']'
+ Case when B. name in ('Char ', 'nchar', 'varchar ', 'nvarchar') then
'Text ('+ cast (case when a. length> 255 then 255 else a. length end as varchar) + ')'
When B. name in ('tynyint', 'int', 'bigint', 'tinyint') then 'int'
When B. name in ('smalldatetime', 'datetime') then 'datetime'
When B. name in ('money', 'smallmoney') then 'money'
Else B. name end
FROM syscolumns a left join policypes B on a. xtype = B. xusertype
Where B. name not in ('image', 'text', 'uniqueidentifier', 'SQL _ variant', 'ntext', 'varbinary ', 'binary', 'timestamp ')
And object_id (@ tbname) = id
Select @ SQL = 'create table ['+ @ tbname
+ '] (' + Substring (@ SQL, 2,8000) + ')'
, @ Fdlist = substring (@ fdlist, 2,8000)
Exec @ err = sp_oamethod @ obj, 'execute ', @ out, @ SQL
If @ err <> 0 goto lberr

Exec @ err = sp_oadestroy @ obj

-- Import data
Set @ SQL = 'openrowset (''microsoft. JET. OLEDB.4.0 '', ''excel 5.0; HDR = YES
; DATABASE = '+ @ path + @ fname + ''', [' + @ tbname + '$])'

Exec ('insert into '+ @ SQL +' ('+ @ fdlist +') select' + @ fdlist + 'from' + @ tbname)

Return

Lberr:
Exec sp_oageterrorinfo 0, @ src out, @ desc out
Lbexit:
Select cast (@ err as varbinary (4) as error code
, @ Src as error source, @ desc as error description
Select @ SQL, @ constr, @ fdlist
Go
-- The above is the table for export, and the following is the query statement for export.

/* -- Data export EXCEL

Export the queried data to Excel, including the field name. The file is a real Excel file.
If the file does not exist, the file is automatically created.
If the table does not exist, the table is automatically created.
Only standard data types can be exported for the sake of universality.
*/

/* -- Call example

P_exporttb @ sqlstr = 'select * from region information'
, @ Path = 'C: ',@fname}'aa.xls', @ sheetname = 'region information'
--*/
If exists (select * from dbo. sysobjects where id = object_id (n' [dbo]. [p_exporttb] ') and OBJECTPROPERTY (id, n' IsProcedure') = 1)
Drop procedure [dbo]. [p_exporttb]
GO

Create proc p_exporttb
@ Sqlstr varchar (8000), -- query statement. If order by is used in the query statement, add top 100 percent.
@ Path nvarchar (1000), -- file storage directory
@ Fname nvarchar (250), -- file name
@ Sheetname varchar (250) = ''-- Name of the worksheet to be created. The default value is the file name.
As
Declare @ err int, @ src nvarchar (255), @ desc nvarchar (255), @ out int
Declare @ obj int, @ constr nvarchar (1000), @ SQL varchar (8000), @ fdlist varchar (8000)

-- Parameter detection
If isnull (@ fname, '') = ''set @fname='temp.xls'
If isnull (@ sheetname, '') ='' set @ sheetname = replace (@ fname ,'.','#')

-- Check whether the file already exists
If right (@ path, 1) <> ''set @ path = @ path +''
Create table # tb (a bit, B bit, c bit)
Set @ SQL = @ path + @ fname
Insert into # tb exec master .. xp_fileexist @ SQL

-- Database creation statement
Set @ SQL = @ path + @ fname
If exists (select 1 from # tb where a = 1)
Set @ constr = 'driver = {Microsoft Excel DRIVER (*. xls)}; DSN = '''; READONLY = false'
+ '; CREATE_DB = "+'; DATABASE = '+ @ SQL + '"'

-- Connect to the database
Exec @ err = sp_oacreate 'ADODB. connection', @ obj out
If @ err <> 0 goto lberr

Exec @ err = sp_oamethod @ obj, 'open', null, @ constr
If @ err <> 0 goto lberr

-- SQL statement used to create a table
Declare @ tbname sysname
Set @ tbname = '# tmp _' + convert (varchar (38), newid ())
Set @ SQL = 'select * into ['+ @ tbname +'] from ('+ @ sqlstr +')'
Exec (@ SQL)

Select @ SQL = '', @ fdlist =''
Select @ fdlist = @ fdlist + ', [' + a. name + ']'
, @ SQL = @ SQL + ', [' + a. name + ']'
+ Case when B. name in ('Char ', 'nchar', 'varchar ', 'nvarchar') then
'Text ('+ cast (case when a. length> 255 then 255 else a. length end as varchar) + ')'
When B. name in ('tynyint', 'int', 'bigint', 'tinyint') then 'int'
When B. name in ('smalldatetime', 'datetime') then 'datetime'
When B. name in ('money', 'smallmoney') then 'money'
Else B. name end
FROM tempdb .. syscolumns a left join tempdb .. policypes B on a. xtype = B. xusertype
Where B. name not in ('image', 'text', 'uniqueidentifier', 'SQL _ variant', 'ntext', 'varbinary ', 'binary', 'timestamp ')
And a. id = (select id from tempdb .. sysobjects where name = @ tbname)
Select @ SQL = 'create table ['+ @ sheetname
+ '] (' + Substring (@ SQL, 2,8000) + ')'
, @ Fdlist = substring (@ fdlist, 2,8000)

Exec @ err = sp_oamethod @ obj, 'execute ', @ out, @ SQL
If @ err <> 0 goto lberr

Exec @ err = sp_oadestroy @ obj

-- Import data
Set @ SQL = 'openrowset (''microsoft. JET. OLEDB.4.0 '', ''excel 5.0; HDR = YES
; DATABASE = '+ @ path + @ fname + ''', [' + @ sheetname + '$])'

Exec ('insert into '+ @ SQL +' ('+ @ fdlist +') select' + @ fdlist + 'from [' + @ tbname + ']')

Set @ SQL = 'drop table ['+ @ tbname +']'
Exec (@ SQL)
Return

Lberr:
Exec sp_oageterrorinfo 0, @ src out, @ desc out
Lbexit:
Select cast (@ err as varbinary (4) as error code
, @ Src as error source, @ desc as error description
Select @ SQL, @ constr, @ fdlist
Go