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Posted to derby-dev@db.apache.org by "Lukas Eder (JIRA)" <ji...@apache.org> on 2012/06/30 11:42:42 UTC

[jira] [Created] (DERBY-5837) Add support for SQL standard DATE, TIME, TIMESTAMP literals

Lukas Eder created DERBY-5837:
---------------------------------

             Summary: Add support for SQL standard DATE, TIME, TIMESTAMP literals
                 Key: DERBY-5837
                 URL: https://issues.apache.org/jira/browse/DERBY-5837
             Project: Derby
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 10.8.2.2
            Reporter: Lukas Eder
            Priority: Minor


The SQL standard 1992 specifies <datetime literals> as such:

         <datetime literal> ::=
                <date literal>
              | <time literal>
              | <timestamp literal>

         <date literal> ::=
              DATE <date string>

         <time literal> ::=
              TIME <time string>

         <timestamp literal> ::=
              TIMESTAMP <timestamp string>

         <date string> ::=
              <quote> <date value> <quote>

         <time string> ::=
              <quote> <time value> [ <time zone interval> ] <quote>

         <timestamp string> ::=
              <quote> <date value> <space> <time value> [ <time zone interval> ] <quote>

Taken from:
http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt

This seems not to be supported directly by Derby. Instead, Derby supports functions for constructing DATE, TIME, TIMESTAMP values. For example:
http://db.apache.org/derby/docs/dev/ref/rreftimestampfunc.html

For increased compatibility, it would be nice if literals were implemented according to the standard. In essence, the function's parentheses could be made optional

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[jira] [Updated] (DERBY-5837) Add support for SQL standard DATE, TIME, TIMESTAMP literals

Posted by "Mamta A. Satoor (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/DERBY-5837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mamta A. Satoor updated DERBY-5837:
-----------------------------------

    Labels: derby_triage10_10 feature  (was: )
    
> Add support for SQL standard DATE, TIME, TIMESTAMP literals
> -----------------------------------------------------------
>
>                 Key: DERBY-5837
>                 URL: https://issues.apache.org/jira/browse/DERBY-5837
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.8.2.2
>            Reporter: Lukas Eder
>            Priority: Minor
>              Labels: derby_triage10_10, feature
>
> The SQL standard 1992 specifies <datetime literals> as such:
>          <datetime literal> ::=
>                 <date literal>
>               | <time literal>
>               | <timestamp literal>
>          <date literal> ::=
>               DATE <date string>
>          <time literal> ::=
>               TIME <time string>
>          <timestamp literal> ::=
>               TIMESTAMP <timestamp string>
>          <date string> ::=
>               <quote> <date value> <quote>
>          <time string> ::=
>               <quote> <time value> [ <time zone interval> ] <quote>
>          <timestamp string> ::=
>               <quote> <date value> <space> <time value> [ <time zone interval> ] <quote>
> Taken from:
> http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt
> This seems not to be supported directly by Derby. Instead, Derby supports functions for constructing DATE, TIME, TIMESTAMP values. For example:
> http://db.apache.org/derby/docs/dev/ref/rreftimestampfunc.html
> For increased compatibility, it would be nice if literals were implemented according to the standard. In essence, the function's parentheses could be made optional

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[jira] [Updated] (DERBY-5837) Add support for SQL standard DATE, TIME, TIMESTAMP literals

Posted by "Mamta A. Satoor (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/DERBY-5837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mamta A. Satoor updated DERBY-5837:
-----------------------------------

    Urgency: Normal
    
> Add support for SQL standard DATE, TIME, TIMESTAMP literals
> -----------------------------------------------------------
>
>                 Key: DERBY-5837
>                 URL: https://issues.apache.org/jira/browse/DERBY-5837
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.8.2.2
>            Reporter: Lukas Eder
>            Priority: Minor
>              Labels: derby_triage10_10, feature
>
> The SQL standard 1992 specifies <datetime literals> as such:
>          <datetime literal> ::=
>                 <date literal>
>               | <time literal>
>               | <timestamp literal>
>          <date literal> ::=
>               DATE <date string>
>          <time literal> ::=
>               TIME <time string>
>          <timestamp literal> ::=
>               TIMESTAMP <timestamp string>
>          <date string> ::=
>               <quote> <date value> <quote>
>          <time string> ::=
>               <quote> <time value> [ <time zone interval> ] <quote>
>          <timestamp string> ::=
>               <quote> <date value> <space> <time value> [ <time zone interval> ] <quote>
> Taken from:
> http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt
> This seems not to be supported directly by Derby. Instead, Derby supports functions for constructing DATE, TIME, TIMESTAMP values. For example:
> http://db.apache.org/derby/docs/dev/ref/rreftimestampfunc.html
> For increased compatibility, it would be nice if literals were implemented according to the standard. In essence, the function's parentheses could be made optional

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[jira] [Commented] (DERBY-5837) Add support for SQL standard DATE, TIME, TIMESTAMP literals

Posted by "Knut Anders Hatlen (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/DERBY-5837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404845#comment-13404845 ] 

Knut Anders Hatlen commented on DERBY-5837:
-------------------------------------------

For completeness, Derby also supports JDBC escape syntax:

http://db.apache.org/derby/docs/dev/ref/rrefjdbc12124.html
http://db.apache.org/derby/docs/dev/ref/rrefjdbcescapedate.html
http://db.apache.org/derby/docs/dev/ref/rrefjdbc41784.html

Supporting the SQL syntax too would be nice, though...
                
> Add support for SQL standard DATE, TIME, TIMESTAMP literals
> -----------------------------------------------------------
>
>                 Key: DERBY-5837
>                 URL: https://issues.apache.org/jira/browse/DERBY-5837
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.8.2.2
>            Reporter: Lukas Eder
>            Priority: Minor
>
> The SQL standard 1992 specifies <datetime literals> as such:
>          <datetime literal> ::=
>                 <date literal>
>               | <time literal>
>               | <timestamp literal>
>          <date literal> ::=
>               DATE <date string>
>          <time literal> ::=
>               TIME <time string>
>          <timestamp literal> ::=
>               TIMESTAMP <timestamp string>
>          <date string> ::=
>               <quote> <date value> <quote>
>          <time string> ::=
>               <quote> <time value> [ <time zone interval> ] <quote>
>          <timestamp string> ::=
>               <quote> <date value> <space> <time value> [ <time zone interval> ] <quote>
> Taken from:
> http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt
> This seems not to be supported directly by Derby. Instead, Derby supports functions for constructing DATE, TIME, TIMESTAMP values. For example:
> http://db.apache.org/derby/docs/dev/ref/rreftimestampfunc.html
> For increased compatibility, it would be nice if literals were implemented according to the standard. In essence, the function's parentheses could be made optional

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