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Export table data from one SQL Server to another

sql
data-transfer
sql-server
database-management
Alex KataevbyAlex Kataev·Nov 24, 2024
TLDR

Transferring data between SQL Servers is a breeze with SQL Server Management Studio (SSMS). The Generate Scripts option is performant if you need schema and data, while the Import and Export Wizard moves the data directly.

Generate Scripts steps:

  1. In SSMS, right-click database > Tasks > Generate Scripts.
  2. Choose your tables and opt for data inclusion.
  3. Run the generated script on your target server.

Import and Export Wizard steps:

  1. Right-click database > Tasks > Export Data.
  2. Follow the wizard, mapping source to destination.

For automation or command-line fancy:

bcp "SELECT * FROM db.schema.Table" queryout "data.dat" -c -T -S SourceServer bcp db.schema.Table in "data.dat" -c -T -S DestinationServer

These swift methods employ built-in utilities for efficient data transfers. For more perpetual or synced data scenarios, transactional replication or log shipping might be your cup of tea.

Guide to additional methods

Reusing import/export packages

Save your configurations from the Import/Export Wizard by exporting the package to a file or SQL Server. This is best for everyday transfers, providing consistency in frequent operations.

Contingency plan with scripting

In instances of different SQL Server versions or particular network configurations, scripting might be the go-to. If Generate Scripts seems intimidating, visual guides are at your disposal online.

Overcoming SELECT INTO query dilema

Without the wizard, SELECT INTO queries can fail if you encounter the maximum number of prefixes error. The wizard can create destination tables, thereby ensuring their structure.

Expanding visual guidance

Find visual aids in tutorials or documentation to understand processes effectively. Seek well-illustrated explanations of the "Script table" feature in case it appears complex.

Deep dive into advanced methods

T-SQL and other script-based methods

When the Import/Export Wizard falls short, turn to T-SQL commands or features like Linked Servers and OPENROWSET for cross-server queries.

Handling data Hulk - large databases

Larger databases may require batched transfer or data compression techniques for optimal performance and network efficiency.

Ensuring data integrity

Post-transfer, always verify your data. Cross-verification queries and CHECKSUM functions ensure your data punch was well received by the target database.