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Subject: [OASIS Issue Tracker] Commented: (ODATA-556) Add "in" operator as syntactic sugar for a chain of "or" expressions
[ http://tools.oasis-open.org/issues/browse/ODATA-556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=36112#action_36112 ] Matthew Borges commented on ODATA-556: -------------------------------------- One other thing to mention. In SQL, the IN operator also allows you to specify more than just a list of literals. For example you can specify a sub-query which returns a single column, or a list of sub-queries which returns a single row and column. The any/all lambda functions already provide this functionality to a certain extent so it may not make sense to duplicate it with the in operator. > Add "in" operator as syntactic sugar for a chain of "or" expressions > -------------------------------------------------------------------- > > Key: ODATA-556 > URL: http://tools.oasis-open.org/issues/browse/ODATA-556 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: Improvement > Components: OData URL Conventions > Affects Versions: V4.0_CSD03 > Reporter: Ralf Handl > Fix For: V4.1_WD01 > > > In data analysis it is common to retrieve data that matches one of several distinct values, reflected in SQL as the IN operator. > This is syntactic sugar, so we need to balance between a convenient notation and adding value to the expression syntax that we already have. > 1) Using JSON collections and a new "in" operator: > CountryCode in ["US","CA","DE"] > 2) Allowing arbitrary collection expressions on the left side of lambda expressions: > ["US","CA","DE"]/any(c:c eq CountryCode) > 3) Adding an overload to the contains function: > contains(["US","CA","DE"], CountryCode) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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