The QueryLiterals module can be used to make select, group, and order methods operate similar to the filter methods if the first argument is a plain string, treating it like a literal string, with any remaining arguments treated as placeholder values.
This adds such support to the following methods: select, select_append, select_group, select_more, group, group_and_count, order, order_append, and order_more.
Note that if you pass a block to these methods, it will use the default implementation without the special literal handling.
If the first argument is a plain string, return a literal string if there are no additional args or a placeholder literal string with the remaining args. Otherwise, return nil.
# File lib/sequel/extensions/query_literals.rb, line 66 66: def query_literal(args) 67: case (s = args[0]) 68: when LiteralString, SQL::Blob 69: nil 70: when String 71: if args.length == 1 72: LiteralString.new(s) 73: else 74: SQL::PlaceholderLiteralString.new(s, args[1..1]) 75: end 76: end 77: end
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