Number of rows.

Check if a specific row is valid.

Returns true iff this insert added a new element.

Number of columns.

Exposed so fused FILTER+AGG+SCAN paths can inline the predicate.

Quote an identifier for SQL. We use double-quotes because SlothDB's parser accepts them and they're unambiguous across dialects.

Close the connection.

Case-fold a string to lowercase for matching.

Forward needed-output mask to child, augmented with columns the filter condition itself references. Without this, a parquet scan child sees no project

Helper: create a catalog with a test table.

Check if all values are valid (fast path: mask not allocated).

Build a per-row keep mask for a list of SimplePredicates over a row group's column data. Returns true on success and fills `out_mask` (size == nrows,

Evaluate all predicates against typed Parquet row-group columns at row r. Returns false (fail) if any predicate misses or the row is null in a predica

Returns the number of hardware threads available, clamped to 1 on single-threaded WASM (Emscripten without pthreads). Std::thread's constructor throws

Bulk-load rows into a DataTable using chunked appends (VECTOR_SIZE rows per chunk). This avoids creating one DataChunk per row, which is the primary b

Read a varint from a byte range (used by the RLE/bit-packed header length prefix).

Top-level entry: compile then reorder so cheap+selective predicates run first. LIKE '%needle%' is per-row substring search; a substring-LIKE clause is

Build a NO_MATCH result with a specific message.

Per-column hint: if set, VARCHAR dict-encoded cols skip per-row string_t materialization (populate only str_dict_indices + str_dict_values). Consumers