Want to export data from PostgreSQL table to TSV using current date as file name?
Try Withdata DBToFile, a PostgreSQL to TSV converter for Windows, Linux, and macOS, Export PostgreSQL data to TSV, 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 data from PostgreSQL table to TSV file using dynamic filename with date and time
Login to PostgreSQL -> Choose PostgreSQL table -> Set TSV filename template including date -> Export PostgreSQL to TSV using current date as file name
Choose PostgreSQL and logon.
“Export From Table” for “TSV to PostgreSQL“.
Select TSV file type.
1. Choose PostgreSQL table.
2. Set TSV file options. Enter filename template, including date, #yyyy# is for current year, #mm# month, #dd# day, #hh# hour, #mi# minute, #ss# second.
3. Set rows options.
4. Export PostgreSQL table data to TSV file. Dynamically created TSV file name using present system time.
After exporting, you can view output TSV files.
More about PostgreSQL to TSV converter
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PostgreSQL → TSV reference
Type mapping
| Value kind | in PostgreSQL | in TSV |
|---|---|---|
| Int | integer | 1234 |
| Bigint | bigint | 9007199254740993 |
| Decimal | numeric(p,s) | 1234.56 |
| Float | double precision | 1.234e+10 |
| Text | varchar(n) | unquoted; a tab in the value splits the column |
| Long text | text | unquoted; newlines break the row |
| Date | date | 2026-09-18 |
| Datetime | timestamp | 2026-09-18 14:30:00 |
| Binary | bytea | not representable |
| Boolean | boolean | TRUE / FALSE |
| JSON | jsonb | the whole JSON value as-is (its own quotes stay) |
Dialect differences
PostgreSQL is a database server and TSV 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 TSV |
|---|---|---|
| port | 5432 | — |
| identifiers | "double quotes" | Rarely used, which is exactly why tabs in data break it |
| 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 - must be encoded |
| separator | — | Tab |
| 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 |
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.
New to the format? Read what a TSV file is (and how it differs from CSV).
