Want to migrate from Clipper to PostgreSQL ?
Try Withdata DBCopier, a Clipper to PostgreSQL converter for Windows, Mac, and Linux, Migrate Clipper 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 Clipper to PostgreSQL
Login to Clipper -> Login to PostgreSQL -> Select tables to migrate -> Migrate from Clipper to PostgreSQL
Choose source Clipper database and logon.
Choose target PostgreSQL database and logon.
Click “Wizard – Import All Tables” at task dialog.
then show the wizard.
1. Open source Clipper.
2. Set “Import Type”.
3. Select PostgreSQL tables to migrate.
4. Migrate from Clipper to PostgreSQL.
Create PostgreSQL tables. Copy Clipper data to PostgreSQL. Create PostgreSQL indexes.
FAQ
More about Clipper to PostgreSQL converter
Download Withdata DBCopier
See also:
Clipper → PostgreSQL reference
Type mapping
| Value kind | in Clipper | in PostgreSQL |
|---|---|---|
| Int | Numeric(10,0) | integer |
| Bigint | Numeric(19,0) | bigint |
| Decimal | Numeric(p,s) | numeric(p,s) |
| Float | Float | double precision |
| Text | Character(n) | varchar(n) |
| Long text | Memo | text |
| Date | Date | date |
| Datetime | (none) | timestamp |
| Binary | (none) | bytea |
| Boolean | Logical | boolean |
| JSON | (none) | jsonb |
Dialect differences
Both Clipper and PostgreSQL are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in Clipper | in PostgreSQL |
|---|---|---|
| port | (file-based) | 5432 |
| identifiers | — | "double quotes" |
| row limit | (driver dependent) | LIMIT n |
| dates | Date (D) | timestamp, timestamptz, date, time |
| long text | Memo (M) | TEXT |
| binary | — | BYTEA |
Command line
| Side | Command |
|---|---|
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
No counterpart
- PostgreSQL has no equivalent for Date and time – it has to be flattened or dropped.
- PostgreSQL has no equivalent for Binary – it has to be flattened or dropped.
- PostgreSQL has no equivalent for JSON – it has to be flattened or dropped.
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