Want to export data from multiple similar PostgreSQL tables to one CSV file?
Try Withdata DBToFile, a PostgreSQL to CSV converter for Windows, Linux, and macOS, Export PostgreSQL data to CSV, 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.
Export multiple similar PostgreSQL tables to a single CSV file
Login to PostgreSQL -> Select PostgreSQL tables -> Set CSV file options -> Export PostgreSQL to CSV
Choose PostgreSQL and logon.
Click “Export Similar Tables” at task dialog.
Select CSV file type.
1. Select similar PostgreSQL tables.
2. Set CSV file options.
3. Set rows options.
4. Export multiple similar PostgreSQL tables to a single CSV file.
After exporting, you can view output CSV file.
More about PostgreSQL to CSV converter
Download Withdata DBToFile
See also:
- Export PostgreSQL table to CSV
- Export PostgreSQL query results to CSV
- Batch export PostgreSQL tables to CSV files
PostgreSQL → CSV reference
Type mapping
| Value kind | in PostgreSQL | in CSV |
|---|---|---|
| Int | integer | 1234 |
| Bigint | bigint | 9007199254740993 |
| Decimal | numeric(p,s) | 1234.56 |
| Float | double precision | 1.234e+10 |
| Text | varchar(n) | quoted only when it contains a comma or a quote |
| Long text | text | must be quoted; line breaks inside force multi-line records |
| Date | date | 2026-09-18 |
| Datetime | timestamp | 2026-09-18 14:30:00 |
| Binary | bytea | not representable - base64 or hex string |
| Boolean | boolean | TRUE / FALSE, or 1 / 0 depending on the writer |
| JSON | jsonb | the whole JSON value quoted, with internal quotes doubled |
Dialect differences
PostgreSQL is a database server and CSV is a file format, so the gap is wider than a dialect difference – the rows below are where values and structure stop lining up.
| Property | in PostgreSQL | in CSV |
|---|---|---|
| port | 5432 | — |
| identifiers | "double quotes" | Double quotes; a literal quote is doubled ("" ) |
| row limit | LIMIT n | — |
| dates | timestamp, timestamptz, date, time | Conventional text: 2026-09-18 or 2026-09-18 14:30:00 |
| long text | TEXT | — |
| binary | BYTEA | Not supported |
| separator | — | Comma "," |
| encoding | — | No declaration - UTF-8 works only with a BOM |
| typing | — | None - every field is text |
| shape | Tables of rows and columns | Flat table, optional header row |
| ceiling | — | No formal limit; row count bounded by memory |
Command line
| Side | Command |
|---|---|
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.
