Want to transfer data from multiple similar MariaDB tables to 1 PostgreSQL table?
Try Withdata DBCopier, a MariaDB to PostgreSQL converter for Windows, Mac, and Linux, Copy MariaDB data to PostgreSQL, 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 MariaDB tables to a single PostgreSQL table
Login to MariaDB and PostgreSQL -> Select source MariaDB tables -> Set the target PostgreSQL table -> Copy MariaDB data to PostgreSQL
Choose source MariaDB database and logon.

Choose target PostgreSQL database and logon.

Click “Convert Similar Tables” at task dialog.

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

2. Select a destination PostgreSQL table and config fields.

3. Preview data.

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

More about MariaDB to PostgreSQL converter
See also:
- Copy MariaDB table data to PostgreSQL
- Copy MariaDB query results to PostgreSQL table
- Batch copy MariaDB tables to PostgreSQL
MariaDB → PostgreSQL reference
Type mapping
| Value kind | in MariaDB | in PostgreSQL |
|---|---|---|
| Int | INT | integer |
| Bigint | BIGINT | bigint |
| Decimal | DECIMAL(p,s) | numeric(p,s) |
| Float | DOUBLE | double precision |
| Text | VARCHAR(n) | varchar(n) |
| Long text | LONGTEXT | text |
| Date | DATE | date |
| Datetime | DATETIME | timestamp |
| Binary | LONGBLOB | bytea |
| Boolean | TINYINT(1) | boolean |
| JSON | JSON | jsonb |
Dialect differences
Both MariaDB and PostgreSQL are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in MariaDB | in PostgreSQL |
|---|---|---|
| port | 3306 | 5432 |
| identifiers | `backtick` | "double quotes" |
| dates | DATETIME, TIMESTAMP, DATE, TIME | timestamp, timestamptz, date, time |
| long text | TINYTEXT / TEXT / MEDIUMTEXT / LONGTEXT | TEXT |
| binary | BLOB / TINYBLOB / LONGBLOB | BYTEA |
Command line
| Side | Command |
|---|---|
| MariaDB | mariadb-dump |
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
| MariaDB (load) | mariadb-import, or LOAD DATA INFILE |
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