Want to transfer data from multiple similar PostgreSQL tables to 1 DB2 table?
Try Withdata DBCopier, a PostgreSQL to DB2 converter for Windows, Mac, and Linux, Copy PostgreSQL data to DB2, Easy and Fast.
- Can run in GUI mode, Step by Step, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Support Windows, Linux, and macOS.
Transfer data from multiple similar PostgreSQL tables to a single DB2 table
Login to PostgreSQL and DB2 -> Select source PostgreSQL tables -> Set the target DB2 table -> Copy PostgreSQL data to DB2
Choose source PostgreSQL database and logon.

Choose target DB2 database and logon.

Click “Convert Similar Tables” at task dialog.

then show the wizard.
1. Select similar PostgreSQL tables.

2. Select a destination DB2 table and config fields.

3. Preview data.

4. Import data from multiple similar PostgreSQL tables to a single DB2 table.

More about PostgreSQL to DB2 converter
See also:
- Copy PostgreSQL table data to DB2
- Copy PostgreSQL query results to DB2 table
- Batch copy PostgreSQL tables to DB2
PostgreSQL → DB2 reference
Type mapping
| Value kind | in PostgreSQL | in DB2 |
|---|---|---|
| Int | integer | INTEGER |
| Bigint | bigint | BIGINT |
| Decimal | numeric(p,s) | DECIMAL(p,s) |
| Float | double precision | DOUBLE |
| Text | varchar(n) | VARCHAR(n) |
| Long text | text | CLOB |
| Date | date | DATE |
| Datetime | timestamp | TIMESTAMP |
| Binary | bytea | BLOB |
| Boolean | boolean | SMALLINT |
| JSON | jsonb | CLOB |
Dialect differences
Both PostgreSQL and DB2 are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in PostgreSQL | in DB2 |
|---|---|---|
| port | 5432 | 50000 |
| row limit | LIMIT n | FETCH FIRST n ROWS |
| dates | timestamp, timestamptz, date, time | DATE, TIME, TIMESTAMP |
| long text | TEXT | CLOB |
| binary | BYTEA | BLOB |
Command line
| Side | Command |
|---|---|
| PostgreSQL | pg_dump or COPY ... TO |
| DB2 | EXPORT TO out.csv OF DEL |
| DB2 (load) | db2 IMPORT FROM file OF DEL |
| PostgreSQL (load) | COPY ... FROM |
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