fixed a few ebnf errors #35
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Well detailed description of the change:
There are a few errors in the sqlpp.ebnf description of the language that I fixed:
The OrdinaryFunctionCall should be able to have no arguments.
There are functions in asterixdb, like current_time(), that don't have any arguments. I changed to the ebnf to allow that.
A duplicate description of the Selection rule.
One contained the ability to use a LetClause and the other didn't. I deleted the one that didn't as asterixdb does support LetClauses.
Case typo in OrderByClause.
The OrderByClause non-terminal was written in 2 different ways: OrderbyClause and OrderByClause. I changed them all to OrderByClause (consistent with GroupByClause)
The non-Terminal "WITH" was used without the quotes.
In 2 rules, the keyword "WITH" was written without the quotes. I added them.
Context of the change
I'm writing a parser generator for sqlpp in flex/bison using this ebnf and I ran into these errors. I'm not sure if this file is used to generate a parser or just as documentation, but I thought it would be useful to fix these.