Implement a SQL-like WHERE filter for in-memory rows

Implement a filter function that operates on an in‑memory dataset stored as a list of dictionaries. Each dictionary represents one record and maps column names (strings) to values, which are either integers or text strings. The function receives the entire dataset and a filter expression written as a simple text string, and must return a new list containing only those records that satisfy the condition, while preserving the original order of the records in the input list.…