[TAJO-437] Timestamp literal support

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: Expression, SQL Parser
• Labels: newbie
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 19/Dec/13 15:15
• Updated: 23/Dec/13 05:38
• Resolved: 23/Dec/13 05:30

Description

Timestamp literal represents timestamp constant. It has the following bnf grammar.

<timestamp literal>    ::=   TIMESTAMP <timestamp string>
<timestamp string>    ::=   <quote> <unquoted timestamp string> <quote>
<unquoted timestamp string>    ::=   <unquoted date string> <space> <unquoted time string>
<unquoted date string>    ::=   <date value>
<unquoted time string>    ::=   <time value> [ <time zone interval> ]
<date value>    ::=   <years value> <minus sign> <months value> <minus sign> <days value>
<time value>    ::=   <hours value> <colon> <minutes value> <colon> <seconds value>
<time zone interval>    ::=   <sign> <hours value> <colon> <minutes value>