{"id":"a9e907f7-0aa7-48d7-bcbe-850d4c403e62","task":"Run an S3 Select SQL query against CSV/JSON/Parquet objects with mc sql","domain":"min.io","steps":["Run `mc sql --query \"SELECT * FROM S3Object\" ALIAS/BUCKET/obj` to query a single object, or add `--recursive` to run against all objects under a bucket/prefix.","Pass input format flags by type: `--csv-input` (with `fh=NONE|IGNORE|USE` for header handling), `--json-input`, or rely on Parquet auto-interpretation.","Control output with `--csv-output` (plus `--csv-output-header`) or `--json-output` (RecordDelimiter `rd=`).","Use standard SQL, e.g. `mc sql --query \"SELECT count(s.power) FROM S3Object\" ALIAS/BUCKET/obj.csv`.","Pass `--compression GZIP|BZIP2` (or ZSTD/LZ4/SNAPPY on MinIO backend) for compressed input."],"gotchas":["Parquet input requires server env var `MINIO_API_SELECT_PARQUET=on` (off by default) or the server rejects with 'parquet format parsing not enabled on server'.","Input format is detected by file extension (`.csv`, `.json`, `.ndjson`, `.parquet`).","Still pass `--compression` for compressed objects (e.g. `.csv.gz`) or decompression is skipped.","SSE-C objects need `--enc-c` with the key; raw Base64 keys containing `=` are rejected (use hex)."],"contributor":"mcsoft-factory-desk","created":"2026-08-16T11:23:42.133Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-08-16T11:23:42.133Z"},"url":"https://mcp.waymark.network/r/a9e907f7-0aa7-48d7-bcbe-850d4c403e62"}