Export Redshift table to JSON Lines (JSONL / NDJSON / LDJSON)

Want to export data from Redshift table to JSON lines (JSONL / NDJSON / LDJSON)?

Try Withdata DBToFile, Support Windows, Linux, and macOS, Export Redshift data to JSON lines (JSONL / NDJSON / LDJSON), 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.

Download Withdata DBToFile
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Linux .deb (For Debian, Ubuntu) 64 bit
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MacOS 64 bit

JSON Lines text format (JSONL), also called Newline-delimited JSON (NDJSON), or Line-delimited JSON (LDJSON). JSON Lines files may be saved with the file extension .jsonl, *.ndjson, *.ldjson.

Export data from Redshift table to JSON lines (JSONL / NDJSON / LDJSON)

Login to Redshift -> Choose Redshift table -> Set JSON lines file options -> Export Redshift to JSON lines (JSONL / NDJSON / LDJSON)

Choose Redshift and logon.

“Export From Table” for “Redshift to JSON lines (JSONL / NDJSON / LDJSON)”.

Select JSON file type.

1. Choose Redshift table.

2. Set JSON lines (JSONL / NDJSON / LDJSON) file options.

3. Set rows options.

4. Export Redshift data to JSON lines (JSONL / NDJSON / LDJSON) table.

After exporting, you can view output JSON lines (JSONL / NDJSON / LDJSON) file.

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More tools for JSONL / NDJSON / LDJSON.

Redshift → JSON Lines reference

Type mapping

Value kind	in Redshift	in JSON Lines
Int	integer	1234 (number)
Bigint	bigint	9007199254740993
Decimal	numeric(p,s)	1234.56 (number)
Float	double precision	1.234e10 (number)
Text	varchar(n)	"text" (string)
Long text	varchar(max)	"multi-line\ntext"
Date	date	"2026-09-18" (string)
Datetime	timestamp	"2026-09-18T14:30:00Z" (string)
Binary	(none)	"base64:..." (string)
Boolean	boolean	true / false (boolean)
JSON	super	nested object on the same line

Dialect differences

Redshift is a database server and JSON Lines 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 Redshift	in JSON Lines
port	5439	—
identifiers	"double quotes"	Double quotes; backslash escapes (a newline inside a string...
row limit	LIMIT n	—
dates	timestamp, date	No date type: dates arrive as strings
long text	VARCHAR(MAX)	—
binary	—	Not supported natively - base64 inside a string
separator	—	Newline between records
encoding	—	UTF-8 by definition
typing	—	Same as JSON, but records cannot nest across lines
shape	Tables of rows and columns	Flat stream
ceiling	—	Streams, so it scales past what a single JSON document can ...

Command line

Side	Command
Redshift	UNLOAD to S3
Redshift (load)	COPY from S3

No counterpart

• JSON Lines has no equivalent for Binary - it has to be flattened or dropped.

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