veeso / wasm-dbms / 37486496469

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fix(dbms): apply transaction changes to rows found through an index

Inside a transaction, a filter on an indexed column such as the primary key returned rows as they were stored, without the changes the transaction had made to columns that are not indexed. The same row could therefore be read with two different values, and a later update keyed on the new value missed it. Rows read through the stored index are now patched with the transaction's changes before the rest of the filter is checked, and rows the transaction deleted are skipped.

Closes #167

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