---

{ “title”: “PARSE_DATA_SIZE”, “language”: “en”, “description”: “The PARSE_DATA_SIZE function parses a string with storage units (such as "1.5GB") and converts it to a numeric value in bytes.” }

Description

The PARSE_DATA_SIZE function parses a string with storage units (such as “1.5GB”) and converts it to a numeric value in bytes.

Syntax

PARSE_DATA_SIZE(<str>)

Parameters

Parameter	Description
<str>	Data size string with unit (e.g., “100MB”, “2.5GB”). Type: VARCHAR

Return Value

Returns LARGEINT type, representing the numeric value converted to bytes.

Special cases:

• Supported units (case-sensitive; use these exact spellings): B, kB, MB, GB, TB, PB, EB, ZB, YB
• Units use base 1024 (e.g., 1kB = 1024B)
• Supports decimals (e.g., “2.5MB”)
• If parameter format is invalid, returns error
• If parameter is NULL, returns NULL. In the Doris 4.1 series since 4.1.5, NULL rows in nullable columns are skipped before string parsing

Supported Units Table:

Unit	Name	Bytes
B	Bytes	1
kB	Kilobytes	1024
MB	Megabytes	1024²
GB	Gigabytes	1024³
TB	Terabytes	1024⁴
PB	Petabytes	1024⁵
EB	Exabytes	1024⁶

Example

1. Basic usage: Parse bytes

SELECT parse_data_size('1024B');

+--------------------------+
| parse_data_size('1024B') |
+--------------------------+
| 1024                     |
+--------------------------+

2. Parse kilobytes

SELECT parse_data_size('1kB');

+------------------------+
| parse_data_size('1kB') |
+------------------------+
| 1024                   |
+------------------------+

3. Parse megabytes with decimals

SELECT parse_data_size('2.5MB');

+--------------------------+
| parse_data_size('2.5MB') |
+--------------------------+
| 2621440                  |
+--------------------------+

4. Parse gigabytes

SELECT parse_data_size('1GB');

+------------------------+
| parse_data_size('1GB') |
+------------------------+
| 1073741824             |
+------------------------+

5. Parse terabytes

SELECT parse_data_size('1TB');

+------------------------+
| parse_data_size('1TB') |
+------------------------+
| 1099511627776          |
+------------------------+

6. Unsupported unit, error

SELECT parse_data_size('1iB');

ERROR 1105 (HY000): errCode = 2, detailMessage = (10.16.10.3)[INVALID_ARGUMENT]Invalid Input argument "1iB" of function parse_data_size

7. Input NULL

SELECT parse_data_size(NULL);

+-----------------------+
| parse_data_size(NULL) |
+-----------------------+
| NULL                  |
+-----------------------+

Keywords

PARSE_DATA_SIZE