parse_jsontable.c was removed as part of
2f2b18bd3f55, though its
mention in src/backend/parser/README was not. Fix that.
Discussion: https://postgr.es/m/CA%2BHiwqHDzw8AP8p_dEkFr0xg458ZTf58zbivAHhK4UeNrx9Tdg%40mail.gmail.com
parse_expr.c handle expressions like col, col + 3, x = 3 or x = 4
parse_enr.c handle ephemeral named rels (trigger transition tables, ...)
parse_func.c handle functions, table.column and column identifiers
-parse_jsontable.c handle JSON_TABLE
parse_merge.c handle MERGE
parse_node.c create nodes for various structures
parse_oper.c handle operators in expressions