Implement T-SQL parser for simple SELECT statements #4
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Add a lexer and parser that can parse the OptimizerHintsTests110 test case: - SELECT * FROM t1 OPTION (IGNORE_NONCLUSTERED_COLUMNSTORE_INDEX) This implements: - Lexer with support for keywords, identifiers, operators, and comments - Parser for SELECT statements with FROM clause and OPTION hints - OptimizerHint AST type and JSON marshaling - Enable the OptimizerHintsTests110 test case
Refactor the ast package to have each AST node type in its own file: - node.go: Node interface - script.go, batch.go: Root types - statement.go, select_statement.go: Statement types - query_expression.go, query_specification.go: Query types - select_element.go, select_scalar_expression.go, select_star_expression.go - scalar_expression.go, column_reference_expression.go - integer_literal.go, string_literal.go, function_call.go - identifier.go, multi_part_identifier.go, identifier_or_value_expression.go - from_clause.go, table_reference.go, named_table_reference.go, qualified_join.go - schema_object_name.go - where_clause.go, boolean_expression.go, boolean_comparison_expression.go - boolean_binary_expression.go - group_by_clause.go, grouping_specification.go, expression_grouping_specification.go - having_clause.go, order_by_clause.go, expression_with_sort_order.go - optimizer_hint.go Also update metadata.json to use empty object instead of skip: false.
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Add a lexer and parser that can parse the OptimizerHintsTests110 test case:
This implements: