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examples:
substreams sink json substreams_ethereum_usdt@v0.1.0 map_events -o ./output --filter=.transfers[] -n 100 -s 20000000 -t +200

substreams sink parquet substreams_ethereum_usdt@v0.1.0 map_events -o ./output_parquet --start-block=20000000 --stop-block=+200 --blocks-per-file=100
(then echo "SELECT * FROM read_parquet('./output_parquet/transfers') LIMIT 5" | duckdb)

@sduchesneau sduchesneau requested a review from maoueh December 18, 2025 21:38
@sduchesneau sduchesneau force-pushed the feature/sinkparquetjson branch from d44c0b2 to 4697bda Compare December 18, 2025 21:40
@sduchesneau sduchesneau force-pushed the feature/sinkparquetjson branch from c032fe2 to e097c28 Compare December 29, 2025 13:46
@sduchesneau sduchesneau changed the title add sink_json and sink_parquet add sink_protojson and sink_parquet Dec 29, 2025
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2 participants