sqlbulkcopy

问题 I am bulkcopying records from a csv file to a sql table. The sql table has columns that are varchar, and columns that are real datatype (based on the csv attributes we are given) Lets suppose that the first 7 columns are the Foreign Keys of varchar(100), and the rest of the 80+ columns are Real datatype. During the bulk copy, I used Out-DataTable function because apparently thats the most efficient way to bulk copy (especially with our files containing 1000's of records). However, I am

问题 I am uploading data from CSV to SQL table using the following function. Is there a better way to do it? I am concerned about , right now, connection hold for long time. Hence need to be reduced. public bool SaveProxyBulkUploadData(List<AddServerPError> saveBulkUploadData) { try { foreach (AddServerPError addServetData in saveBulkUploadData) { DbCommand dbCmd = CitiScriptExecutionDB.GetStoredProcCommand("USP_HS_InsertProxyBulkUploadData"); CitiScriptExecutionDB.AddInParameter(dbCmd, "@groupid"

问题 I got this following scenario, There are four tables COUNTRY, STATE, CITY, STREET And I have the excel file with the records of the above..possibly 2000 rows as of now. I used SqlBulkCopy to import the data to a temp table, lets name the table IMPORT. And i wrote one trigger for insert on the IMPORT table which gets the inserted record and splits country, state, city, street then inserts them to the respective table. In this trigger i got to do some conditional check,like, if COUNTRY name is

问题 I got this following scenario, There are four tables COUNTRY, STATE, CITY, STREET And I have the excel file with the records of the above..possibly 2000 rows as of now. I used SqlBulkCopy to import the data to a temp table, lets name the table IMPORT. And i wrote one trigger for insert on the IMPORT table which gets the inserted record and splits country, state, city, street then inserts them to the respective table. In this trigger i got to do some conditional check,like, if COUNTRY name is

问题 I'm using SQLBulkCopy, in pseudocode I do this: make new Employee datatable make new EmployeeAddress datatable populate employee table but don't specificy employeeId as it's identity populate EmployeeAddress datatable, but it contains an employeeId field write both datatables to the database by doing this twice and changing the table name: . using (var bulk = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.KeepIdentity & SqlBulkCopyOptions.KeepNulls)) { bulk.BatchSize = 25; bulk

问题 I'm using SQLBulkCopy, in pseudocode I do this: make new Employee datatable make new EmployeeAddress datatable populate employee table but don't specificy employeeId as it's identity populate EmployeeAddress datatable, but it contains an employeeId field write both datatables to the database by doing this twice and changing the table name: . using (var bulk = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.KeepIdentity & SqlBulkCopyOptions.KeepNulls)) { bulk.BatchSize = 25; bulk

问题 I try to insert data from a textfile into a SQL Server 2016 table with a computed column with bcp. My bcp command: bcp Test.dbo.myFirstImport IN D:\myFirstImport.txt -f D:\myFirstImport.xml –T My table: CREATE TABLE [dbo].[MyFirstImport]( [PersonID] [smallint] NULL, [FirstName] [varchar](25) NULL, [LastName] [varchar](30) NULL, [BirthDate] [date] NOT NULL, [YearMonthCom] AS (datepart(year,[BirthDate])*(100)+datepart(month,[BirthDate])) PERSISTED ) ON [PRIMARY] My Data (tab separated): 1

问题 If one needs to read data from SqlServer in a streamed fashion, there are some capabilities for that. Such as using SqlDataReader with CommandBehavior.SequentialAccess , and particularly when binary column data needs to be accessed there is the GetStream(int) method for that: var cmd = new SqlCommand(); cmd.Connection = connection; cmd.CommandText = @"select 0x0123456789 as Data"; using (var dr = cmd.ExecuteReader(CommandBehavior.SequentialAccess)) { dr.Read(); var stream = dr.GetStream(0); /

问题 If one needs to read data from SqlServer in a streamed fashion, there are some capabilities for that. Such as using SqlDataReader with CommandBehavior.SequentialAccess , and particularly when binary column data needs to be accessed there is the GetStream(int) method for that: var cmd = new SqlCommand(); cmd.Connection = connection; cmd.CommandText = @"select 0x0123456789 as Data"; using (var dr = cmd.ExecuteReader(CommandBehavior.SequentialAccess)) { dr.Read(); var stream = dr.GetStream(0); /

问题 I'm trying to do a bulk insert with the SqlBulkCopy class from flatfiles created by the SQL Server Management Import Export Wizard. The files are comma separated. One row in the file can look like this: {DCAD82A9-32EC-4351-BEDC-2F8291B40AB3},,{ca91e768-072d-4e30-aaf1-bfe32c24008f},900001:1792756,900001:1792757,basladdning,2011-04-29 02:54:15.380000000,basladdning,2011-04-29 02:54:15.380000000,{20A3C50E-8029-41DE-86F1-DDCDB9A78BA5} The error I get is: System.InvalidOperationException was