SQLServer数据导入导出的几种方法小结

 代码如下:
 
string strOLEDBConnect = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\1\;Extended Properties='text;HDR=Yes;FMT=Delimited'"; 
OleDbConnection conn = new OleDbConnection(strOLEDBConnect); 
conn.Open(); 
SQLstmt = "select * from 1.txt";//读取.txt中的数据 
DataTable dt=new DataTable(); 
OleDbDataAdapter da = new OleDbDataAdapter(SQLstmt, conn); 
da.Fill(dt);//在DataSet的指定范围中添加或刷新行以匹配使用DataSet、DataTable 和IDataReader 名称的数据源中的行。 
if(dt.Rows.Count>0) 
foreach(DataRow dr in dt.Rows) 
{ 
SQLstmt = "insert into MyTable values('" + dr..." 
 
3.BCP,可以用作大容量的数据导入导出,也可以配合xp_cmdshell来使用. 
语法: 

BCP语法 
 代码如下:
 
bcp {[[database_name.][schema].]{table_name | view_name} | "query"} 
{in | out | queryout | format} data_file 
[-mmax_errors] [-fformat_file] [-x] [-eerr_file] 
[-Ffirst_row] [-Llast_row] [-bbatch_size] 
[-ddatabase_name] [-n] [-c] [-N] [-w] [-V (70 | 80 | 90 )] 
[-q] [-C { ACP | OEM | RAW | code_page } ] [-tfield_term] 
[-rrow_term] [-iinput_file] [-ooutput_file] [-apacket_size] 
[-S [server_name[\instance_name]]] [-Ulogin_id] [-Ppassword] 
[-T] [-v] [-R] [-k] [-E] [-h"hint [,...n]"] 
 
请注意数据导入导出的方向参数:in,out,queryout 

如: 

如: 

4.BULK INSERT. T-SQL的命令,允许直接导入数据 
语法: 
 代码如下:
 
BULK INSERT 
[ database_name. [ schema_name ] . | schema_name. ] [ table_name | view_name ] 
FROM 'data_file' 
[ WITH 
( 
[ [ , ] BATCHSIZE =batch_size ] 
[ [ , ] CHECK_CONSTRAINTS ] 
[ [ , ] CODEPAGE = { 'ACP' | 'OEM' | 'RAW' | 'code_page' } ] 
[ [ , ] DATAFILETYPE = 
{ 'char' | 'native'| 'widechar' | 'widenative' } ] 
[ [ , ] FIELDTERMINATOR = 'field_terminator' ] 
[ [ , ] FIRSTROW = first_row ] 
[ [ , ] FIRE_TRIGGERS ] 
[ [ , ] FORMATFILE ='format_file_path' ] 
[ [ , ] KEEPIDENTITY ] 
[ [ , ] KEEPNULLS ] 
[ [ , ] KILOBYTES_PER_BATCH =kilobytes_per_batch ] 
[ [ , ] LASTROW =last_row ] 
[ [ , ] MAXERRORS =max_errors ] 
[ [ , ] ORDER ( { column [ ASC | DESC ] } [ ,...n ] ) ] 
[ [ , ] ROWS_PER_BATCH =rows_per_batch ] 
[ [ , ] ROWTERMINATOR ='row_terminator' ] 
[ [ , ] TABLOCK ] 
[ [ , ] ERRORFILE ='file_name' ] 
)] 
 
重要参数: 
FIELDTERMINATOR,字段分隔符 
FIRSTROW:第一个数据行 
ROWTERMINATOR:行终结符 
如: 



 代码如下:
 
BULK INSERT dbo.ImportTest 
FROM 'C:\ImportData.txt' 
WITH ( FIELDTERMINATOR =',', FIRSTROW = 2 ) 
 

5. OPENROWSET也是T-SQL的命令,包含有DB连接的信息和其它导入方法不同的是,OPENROWSET可以作为一个目标表参与INSERT,UPDATE,DELETE操作. 
语法: 
 代码如下:
 
OPENROWSET 
( { 'provider_name', { 'datasource';'user_id';'password' 
| 'provider_string' } 
, { [ catalog. ] [ schema. ] object 
| 'query' 
} 
| BULK 'data_file', 
{ FORMATFILE ='format_file_path' [ <bulk_options> ] 
| SINGLE_BLOB | SINGLE_CLOB | SINGLE_NCLOB } 
} )<bulk_options> ::= 
[ , CODEPAGE = { 'ACP' | 'OEM' | 'RAW' | 'code_page' } ] 
[ , ERRORFILE ='file_name' ] 
[ , FIRSTROW = first_row ] 
[ , LASTROW = last_row ] 
[ , MAXERRORS = maximum_errors ] 
[ , ROWS_PER_BATCH =rows_per_batch ] 
 
如: 
 代码如下:
 
INSERT INTO dbo.ImportTest 
SELECT * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 
'Excel 8.0;Database=C:\ImportData.xls', 'SELECT * FROM [Sheet1$]' WHERE A1 IS NOT NULL) 
 
6.OPENDATASOURCE 
语法: 
OPENDATASOURCE ( provider_name,init_string ) 
如: 
 代码如下:
 
INSERT INTO dbo.ImportTest 
SELECT * FROM OPENDATASOURCE('Microsoft.Jet.OLEDB.4.0', 
'Data Source=C:\ImportData.xls;Extended Properties=Excel 8.0')...[Sheet1$] 
 
7.OPENQUERY.是在linked server的基础上执行的查询.所以执行之前必须先建立好link server.OPENQUERY的结果集可以作为一个table参与DML的操作. 
语法: 
OPENQUERY (linked_server ,'query') 
如: 
 代码如下:
 
EXEC sp_addlinkedserver 'ImportData', 
'Jet 4.0', 'Microsoft.Jet.OLEDB.4.0', 
'C:\ImportData.xls', 
NULL, 
'Excel 8.0' 
GO 
INSERT INTO dbo.ImportTest 
SELECT * 
FROM OPENQUERY(ImportData, 'SELECT * FROM [Sheet1$]') 
 

以上只是简单总结的一些DB数据导入导出的方法及其一些简单的实例,希望对你实践中会有所帮助. 

            
            

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