我试图使用pig来过滤一个关系，它基于一周中的当前日期，使用三元条件，但它给了我一个错误，我还没有看到。
这就是我要做的：

C = filter B by (DaysBetween(CurrentTime(),ToDate(0L)) % 7) == (long)0 ? B.interval == 'daily' : B.interval == 'weekly';

返回的错误是：

ERROR 1200: Pig script failed to parse: NoViableAltException(84@[])

Failed to parse: Pig script failed to parse: NoViableAltException(84@[])
    at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:196)
    at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1684)
    at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1657)
    at org.apache.pig.PigServer.registerQuery(PigServer.java:600)
    at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1069)
    at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:501)
    at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:228)
    at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:203)
    at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:66)
    at org.apache.pig.Main.run(Main.java:542)
    at org.apache.pig.Main.main(Main.java:156)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: NoViableAltException(84@[])
    at org.apache.pig.parser.AstValidator.expr(AstValidator.java:8637)
    at org.apache.pig.parser.AstValidator.expr(AstValidator.java:9115)
    at org.apache.pig.parser.AstValidator.bin_expr(AstValidator.java:10531)
    at org.apache.pig.parser.AstValidator.projectable_expr(AstValidator.java:9790)
    at org.apache.pig.parser.AstValidator.var_expr(AstValidator.java:9582)
    at org.apache.pig.parser.AstValidator.expr(AstValidator.java:8985)
    at org.apache.pig.parser.AstValidator.cond(AstValidator.java:7820)
    at org.apache.pig.parser.AstValidator.filter_clause(AstValidator.java:7328)
    at org.apache.pig.parser.AstValidator.op_clause(AstValidator.java:1683)
    at org.apache.pig.parser.AstValidator.general_statement(AstValidator.java:1035)
    at org.apache.pig.parser.AstValidator.statement(AstValidator.java:499)
    at org.apache.pig.parser.AstValidator.query(AstValidator.java:373)
    at org.apache.pig.parser.QueryParserDriver.validateAst(QueryParserDriver.java:255)
    at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:183)
    ... 15 more

有人知道它为什么不起作用吗？我在mac上用的是0.11。
谢谢。
编辑：我试图不使用自定义项，并且在其他关系中使用了三元条件。