Want to migrate from SQL Server to PostgreSQL ?
Try Withdata DBCopier, a SQL Server to PostgreSQL converter for Windows, Mac, and Linux, Migrate SQL Server to PostgreSQL, Easy and Fast.
- Step by Step, just a few mouse clicks.
- Create PostgreSQL tables with auto mapping data types. Create PostgreSQL indexes.
Migrate from SQL Server to PostgreSQL
Login to SQL Server -> Login to PostgreSQL -> Select tables to migrate -> Migrate from SQL Server to PostgreSQL
Choose source SQL Server database and logon.
Choose target PostgreSQL database and logon.
Click “Wizard – Import All Tables” at task dialog.
then show the wizard.
1. Open source SQL Server.
2. Set “Import Type”.
3. Select PostgreSQL tables to migrate.
4. Migrate from SQL Server to PostgreSQL.
Create PostgreSQL tables. Copy SQL Server data to PostgreSQL. Create PostgreSQL indexes.
FAQ
More about SQL Server to PostgreSQL converter
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See also:
SQL Server → PostgreSQL reference
Type mapping
| Value kind | in SQL Server | in PostgreSQL |
|---|---|---|
| Int | int | integer |
| Decimal | decimal(p,s) | numeric(p,s) |
| Float | float | double precision |
| Text | nvarchar(n) | varchar(n) |
| Long text | nvarchar(max) | text |
| Datetime | datetime2 | timestamp |
| Binary | varbinary(max) | bytea |
| Boolean | bit | boolean |
| JSON | nvarchar(max) | jsonb |
Dialect differences
Both SQL Server and PostgreSQL are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in SQL Server | in PostgreSQL |
|---|---|---|
| port | 1433 | 5432 |
| identifiers | [square brackets] | "double quotes" |
| row limit | SELECT TOP n | LIMIT n |
| dates | datetime, datetime2, date, time | timestamp, timestamptz, date, time |
| long text | nvarchar(max) | TEXT |
| binary | varbinary(max) | BYTEA |
Command line
| Side | Command |
|---|---|
| SQL Server | bcp |
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
| SQL Server (load) | bcp, or BULK INSERT |
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