10 Best Convert MSSQL to PostgreSQL Tools (2024) [FREE DOWNLOAD]

1. Introduction

In the world of databases, migrating data from one system to another can be a monumental task. This process can become even more complex when transitioning from different forms of SQL, such as moving data from Microsoft SQL Server (MSSQL) to PostgreSQL. This is where tools dedicated for converting MSSQL to PostgreSQL become invaluable, helping to simplify these migrations and handle them with more accuracy and efficiency.

1.1 Importance of Convert MSSQL to PostgreSQL tool

MSSQL and PostgreSQL have differing syntax, functionalities, and constraints. As a result, manually transferring data and structures between these systems can be slow and prone to errors. Convert MSSQL to PostgreSQL tools take care of translating data and database schema, efficiently mapping the differences between these systems, and automatically converting data types, indexes, and other database elements. Through achieving this, they save organizations significant time and resources in their database migrations.

1.2 MS SQL Recovery Tool

If you failed to convert MSSQL database to PostgreSQL database, it is likely that the MSSQL database is corrupt and you need an MS SQL recovery tool, such as DataNumen SQL Recovery, to help you:

1.3 Objectives of this Comparison

The aim of this comparison guide is to give an in-depth analysis of various MSSQL to PostgreSQL conversion tools available in the market. This guide will provide brief introductions, along with pros and cons of each featured tool. This comparison will provide valuable insight for organizations, enabling them to choose the best fitting tool based on their unique requirements and constraints. By the end of this guide, readers should have a clear path forward in their quest to find a fitting MSSQL to PostgreSQL conversion tool.

2. Intelligent Converters SQL Server to PostgreSQL Code Converter

Intelligent Converters SQL Server to PostgreSQL Code Converter is a tool specifically designed to facilitate seamless migration between these two systems. This tool helps convert not only tables, but also views, stored procedures, and indexes. It provides the capability to filter data via SELECT queries, along with comfortable handling of large databases.

2.1 Pros

Handles large databases: Intelligent Converters are optimized to handle large databases with ease and speed, ensuring efficient migration process.
Converts indexes, views and stored procedures: This tool doesn’t limit itself to just tables. It ensures a thorough migration including views, stored procedures and indexes.
Data filtering: Intelligent Converters allow users to filter data using SELECT queries enabling more control over what is migrated.

2.2 Cons

Limited free version: Although they do offer a free demo version of the tool, it’s limited in its functionality and only migrates 50 database records per table.
No direct cloud service integration: Unlike some other converters, it lacks a built-in feature for direct migration to cloud services like AWS or Google Cloud.

3. Sqlines SQL Server to PostgreSQL Migration

Sqlines offers a range of tools for data migration between SQL Server and PostgreSQL. This tool provides a command line tool for converting data and schema, which gives an added layer of flexibility and control. Not only can it convert table structures, views, and stored procedures, it can also convert SQL expressions and functions.

3.1 Pros

Command Line Interface: For those who prefer working in a terminal, Sqlines offers a command line tool offering more control and flexibility in the migration process.
Comprehensive conversion: Sqlines doesn’t limit its conversion capabilities to tables, views, and procedures. It also brings over SQL expressions and functions to the new environment.
Wide Support: Besides SQL Server and PostgreSQL, Sqlines also supports a wide variety of other databases, making it a more multi-purpose tool for organizations with diverse database environments.

3.2 Cons

No GUI: Sqlines primarily operates via command line, which may not be as user-friendly for some users who are accustomed to graphical interfaces.
Limited error handling: Some users have reported unclear error messages, making troubleshooting more difficult.

4. EnterpriseDB’s Migration Toolkit SQL to PostgreSQL

Developed by EnterpriseDB, this Migration Toolkit is a Java-based utility which supports migration from SQL Server to PostgreSQL. The tool allows for automatic data type matching and manageable handling of indexes, constraints, and stored procedures.

4.1 Pros

Java-based: Built using Java, this toolkit provides compatibility with various systems, ensuring a smooth migration process across platforms.
Handles complex structures: It is equipped to handle indexes, constraints, and stored procedures, ensuring all parts of your database structure are adequately translated into PostgreSQL.
Customizable migration: It allows for selective migration, letting users choose which tables and components should be migrated.

4.2 Cons

Requires technical knowledge: Being a toolkit rather than a standard easy-to-use tool, it could require a fair amount of technical knowledge to fully exploit its capabilities.
Java dependence: Given that it is Java-based, environments where Java isn’t installed or poorly supported may face problems running this toolkit.

5. DBConvert/DBSync SQL Server to PostgreSQL

DBConvert/DBSync SQL Server to PostgreSQL is another powerful tool that aids in database migration from SQL Server to PostgreSQL. It allows for both direct migration and synchronization between the two systems. Not only does it support migrating the data, but also indexes, relations, and schemas.

5.1 Pros

Bi-directional sync: DBConvert/DBSync doesn’t only offer migration but also bi-directional synchronization between SQL Server and PostgreSQL environments.
Migrates Schema and Relations: Along with data migration, it also supports moving over indexes, schemas, and relations to the new database system.
Command line mode: It offers a command line mode for automating the migration process, which can be highly beneficial for repetitive tasks.

5.2 Cons

License requirement: This tool isn’t freely available and requires purchasing a license for usage.
Not as user-friendly: Users with limited technical backgrounds or database understanding may find it hard to get started with the tool.

6. Dalibo sqlserver2pgsql

Dalibo’s sqlserver2pgsql is an open-source tool primarily designed to help in migrating SQL Server databases to PostgreSQL. The script provided by this tool allows converting the SQL Server dump to a PostgreSQL compatible format, making the migration process an easier task.

6.1 Pros

Open-source: Being an open-source tool, sqlserver2pgsql allows for flexibility and cost-effectiveness as it can be modified to suit specific needs.
Script-based conversion: The tool provides script-based conversion making it easier to handle large database migrations.
Handles most used objects: sqlserver2pgsql aims to handle the conversion of most commonly used SQL Server objects to PostgreSQL.

6.2 Cons

Not for novice users: Due to its script-based nature, novice users with less technical knowledge may find it challenging to utilize this tool to its maximum potential.
No GUI: Unlike some other tools, sqlserver2pgsql operates entirely from the command line and doesn’t offer a graphical user interface.

7. RebaseData MSSQL to Postgres Online

RebaseData MSSQL to Postgres Online is an online service that provides effortless MSSQL to PostgreSQL conversion. It supports a variety of input file formats, including SQL Server dumped files, and affords the user a high degree of privacy by deleting all uploaded files post-conversion.

7.1 Pros

Easy Web-based Conversion: As an online tool, it offers an accessible, user-friendly interface that requires no installation.
Supports Multiple Input Formats: Not just limited to MSSQL dump files, the tool also supports a variety of other formats for data import.
Privacy-Focused: RebaseData ensures user privacy by auto-deleting all uploaded files within a short duration after conversion.

7.2 Cons

Reliant on Internet Connectivity: As an online service, it is entirely dependent on stable and consistent internet connectivity for proper functioning.
Limited Free Use: While it does offer free conversion, there’s a cap on the size of the databases that can be converted without a paid plan.

8. AWS Schema Conversion Tool

AWS Schema Conversion Tool is a part of the Amazon Web Services ecosystem that greatly simplifies database migration projects. This tool automatically converts SQL Server database schemas to PostgreSQL formats, clearly identifying any manual changes that might be needed.

8.1 Pros

Comprehensive AWS Integration: As a part of the AWS suite, it allows for seamless integration with other AWS services and easy migration to AWS-managed databases.
Automatic schema conversion: The tool auto-converts the source schema and majority of the database code objects to a format compatible with the target database.
Detailed Reporting: AWS Schema Conversion Tool provides a detailed report of the conversion process, highlighting any manual interventions required.

8.2 Cons

Platform Dependence: The tool is primarily intended for use within the AWS cloud ecosystem, which may limit its usage for those not utilizing AWS services.
Can’t Handle All Conversions: There are instances where full conversion isn’t possible and manual intervention is needed, which can be tricky for non-technical users.

9. Try-to-Convert

Try-to-Convert is a user-friendly online tool that facilitates code conversion from MSSQL to PostgreSQL. It enables users to easily convert SQL scripts, and all that is needed to accomplish this is to paste the SQL script into their browser and select PostgreSQL as the target SQL syntax.

9.1 Pros

User-friendly Interface: With its web-based platform, Try-to-Convert presents a clear and friendly interface for users, especially catering to those with limited technical background.
Handle SQL Scripts: This tool is quite suitable for converting SQL scripts, offering a convenient solution for users requiring SQL code conversion across different platforms.
No Installation Required: Being an online tool, there is no need to install software. Users can simply use it in their web browser.

9.2 Cons

Internet-Dependent: A stable internet connection is essential to use Try-to-Convert, unlike standalone software applications that can work offline.
Limited to Code Conversion: This tool is strictly designed for code conversion and does not support migrating entire databases with data, which limits its capability somewhat.

10. Spectral Core Limited – Full Convert SQL Server to PostgreSQL

Spectral Core’s Full Convert is a simple yet robust tool aimed at offering fast and reliable database conversion from SQL Server to PostgreSQL. This tool not only handles data conversion but also facilitates automatic creation of tables, schemas, and indexes in the target database.

10.1 Pros

Speed and efficiency: Spectral Core’s Full Convert is focused on offering quick conversions, boasting about its speed and accuracy in the process.
Comprehensive Conversion: It supports the conversion of tables, schemas, indexes, and relations as well as data, making it a comprehensive solution for database migration.
Command Line Support: Full Convert offers command line support, which can automate and schedule tasks for convenience and efficiency.

10.2 Cons

Paid Software: Full Convert is not a free tool, which could be a deterrent for smaller organizations or for one-time use.
Complexity for Non-Technical Users: Though offering powerful functionalities, it can be complex for non-technical users to understand and utilize at its full potential.

11. Ispirer SQL Server to PostgreSQL Migration

Ispirer Migration and Modernization toolkit focuses on providing an effective solution to convert SQL Server code to PostgreSQL. It aims to dramatically decrease conversion risks and significantly reduce the time spent on the process by automatically translating SQL Server SQL, views, stored procedures, functions, triggers, and other database objects to PostgreSQL.

11.1 Pros

Comprehensive Conversion: Ispirer toolkit performs the conversion of various database objects including SQL language constructs, which provides a complete migration solution.
Decreased Conversion Risks: The toolkit is designed to minimize conversion risks by automatically transferring the entire database including SQL, views, stored procedures, etc.
Time Savings: By providing an automated process and providing customization upon request, Ispirer saves a significant amount of time in the conversion process.

11.2 Cons

Costly: Ispirer isn’t a free tool, and the costs can be high, especially for larger databases. This might not be suitable for organizations with budget constraints.
Limited Free Trial: The free trial version has limited functionality and does not support all features of the full version.

12. Summary

12.1 Overall Comparison Table

Tool	Features	Ease of Use	Price	Customer Support
Intelligent Converters SQL Server to PostgreSQL Code Converter	Handles Large Databases, Converts Indexes, Views and Stored Procedures, Data Filtering	User Friendly	Paid	Email Support
Sqlines SQL Server to PostgreSQL Migration	CLI, Comprehensive Conversion, Wide Support	Requires Technical Knowledge	Freemium	Email and Community Support
EnterpriseDB’s Migration Toolkit SQL to PostgreSQL	Java-based, Handles Complex Structures, Customizable Migration	Technical Knowledge Required	Freemium	Email Support
DBConvert/DBSyncSQL Server to PostgreSQL	Bi-directional Sync, Migrates Schema and Relations, Command Line Mode	Technical Knowledge Required	Paid	Email and Phone Support
Dalibo sqlserver2pgsql	Open-source, Script-based Conversion, Handles most used objects	Requires Technical Knowledge	Free	Community Support
RebaseDatat MSSQL to Postgres Online	Easy Web-based Conversion, Supports Multiple Input Formats, Privacy Focused	Very User Friendly	Freemium	Email Support
AWS Schema Conversion Tool	Comprehensive AWS Integration, Automatic Schema Conversion, Detailed Reporting	User Friendly	Paid as per AWS Pricing	24/7 AWS Support
try-to-convert	User-friendly Interface, Handle SQL Scripts, No Installation Required	Very User Friendly	Free	Email Support
Spectral Core Limited – Full Convert SQL Server to PostgreSQL	Speed and Efficiency, Comprehensive Conversion, Command Line Support	Technical Knowledge Beneficial	Paid	Email and Phone Support
Ispirer SQL Server to PostgreSQL Migration	Comprehensive Conversion, Decreased Conversion Risks, Time Savings	Technical Knowledge Required	Paid	Email, Phone, and On-site Support

12.2 Recommended Tool Based on Various Needs

Based on the comparisons above, we can provide some general recommendations for different needs:

For Large Databases: Intelligent Converters SQL to PostgreSQL would be the recommended tool due to its ability to handle large databases efficiently.
For Script-based Conversion: Dalibo sqlserver2pgsql offers script-based conversion, providing a highly effective and customizable option.
For Ease of Use: RebaseData MSSQL to Postgres Online is an ideal tool due to its intuitive interface that is perfect for people with less technical expertise.
For AWS Integration: AWS Schema Conversion Tool would be best for people already utilizing other AWS services.
For Comprehensive Conversion: Spectral Core Full Convert SQL to PostgreSQL offers a very comprehensive conversion, translating not only data and tables but also relations, indexes, and more.
For Budget Conscious Users: Try-to-Convert is a free-to-use tool that allows users to convert SQL script with ease.

13. Conclusion

13.1 Final Thoughts and Takeaways for Choosing a Convert MSSQL to PostgreSQL Tool

In the realm of databases, choosing an appropriate tool for conversion or migration is a critical decision that entirely depends on your specific needs and requirements. While some users may find the friendly interface of a tool like RebaseData most appealing, others may lean towards the robust, script-based functionality offered by the likes of Dalibo sqlserver2pgsql. Factors such as budget, size of the databases, level of technical knowledge, and whether or not one is already immersed in an ecosystem like AWS, play crucial roles in dictating this choice.

In the end, the best tool for you will be the one that perfectly aligns with your workload, cost, and ease-of-use preferences. As such, thorough research on the aspects that matter the most to your migration project is key. It’s recommended to always go for trial versions before you invest in paid versions, wherever available, to get a feel of the tool in advance.

The process of database migration is complex, but by making the right choice of a conversion tool, the journey can be less daunting and more efficient. Here’s to smoother, accurate migrations!

Author Introduction:

Vera Chen is a data recovery expert in DataNumen, which provides a wide range of products, including product to repair Excel files.