Set up lex/yacc.
Selection parsing.
Parser clean up.
Parse selection fields.
Rename selection and condition.
Refactor query steps into statements.
Query string generation.
Parse selection dimensions.
Add selection 'INTO'.
Add quoted string parsing.
Condition parsing.
Parse condition within.
Add expression parsing.
Add StatementParser and ExpressionParser.
Remove yacc state table.
Refactor Condition expression.
Add single quoted strings.
Integrate query parsing with server.
Refactor query hierarchy.
Refactor expression codegen.