[IMPALA-1952] Support CASTing a string literal representing a number in scientific notation to a DECIMAL.

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Impala 1.4, Impala 1.4.1, Impala 2.0, Impala 2.0.1, Impala 2.1, Impala 2.1.1
• Fix Version/s: Impala 2.3.0
• Labels: ramp-up
• Assignee: casey
• Reporter: Alexander Behm
• Created: 14/Apr/15 01:56
• Updated: 04/Jan/17 23:58
• Resolved: 06/May/15 17:46

Description

We should extend our support for string->decimal casts to accept strings representing a number in scientific notation. For example:

select cast("1.0e7" as decimal(9,4))

In the code, the problem is that StringParser::StringToDecimal() in string-parser.h does not support parsing scientific notation.

Issue Links

• is duplicated by: IMPALA-1594 cast empty string to decimal should be consistent with other numeric types