ืžืขืœื“ื•ื ื’ ืคื•ืŸ DBMS SQLite 3.32. ื“ื™ DuckDB ืคึผืจื•ื™ืขืงื˜ ื“ืขื•ื•ืขืœืึธืคึผืก ืึท ื•ื•ืึทืจื™ืึทื ื˜ ืคื•ืŸ SQLite ืคึฟืึทืจ ืึทื ืึทืœื™ื˜ื™ืงืึทืœ ืงื•ื•ื™ืจื™ื–

ืืจื•ื™ืก ืžืขืœื“ื•ื ื’ ืกืงืœื™ื˜ืข 3.32.0, ืึท ืœื™ื™ื˜ื•ื•ื™ื™ื˜ ื“ื‘ืžืก ื“ื™ื–ื™ื™ื ื“ ื•ื•ื™ ืึท ืฆืึทืคึผืŸ-ืื™ืŸ ื‘ื™ื‘ืœื™ืึธื˜ืขืง. ื“ื™ SQLite ืงืึธื“ ืื™ื– ืคื•ื ืื ื“ืขืจื’ืขื˜ื™ื™ืœื˜ ื•ื•ื™ ืึท ืฆื™ื‘ื•ืจ ืคืขืœื“, ื™.ืข. ืงืขืŸ ื–ื™ื™ืŸ ื’ืขื•ื•ื™ื™ื ื˜ ืึธืŸ ืจื™ืกื˜ืจื™ืงืฉืึทื ื– ืื•ืŸ ืคืจื™ื™ ืคึฟืึทืจ ืงื™ื™ืŸ ืฆื•ื•ืขืง. ืคื™ื ืึทื ืฆื™ืขืœ ืฉื˜ื™ืฆืŸ ืคึฟืึทืจ SQLite ื“ืขื•ื•ืขืœืึธืคึผืขืจืก ืื™ื– ืฆื•ื’ืขืฉื˜ืขืœื˜ ื“ื•ืจืš ืึท ืกืคึผืขืฉืœื™ ื‘ืืฉืืคืŸ ืงืึธื ืกืึธืจื˜ื™ื•ื, ื•ื•ืึธืก ื›ื•ืœืœ ืงืึธืžืคึผืึทื ื™ืขืก ืึทื–ืึท ื•ื•ื™ ืึทื“ืึธื•ื‘ื™, ืึธืจืึทืงืœืข, ืžืึธื–ื™ืœืœืึท, ื‘ืขื ื˜ืœื™ื™ ืื•ืŸ ื‘ืœื•ืžื‘ืขืจื’.

ื”ื•ื™ืคึผื˜ ืขื ื“ืขืจื•ื ื’ืขืŸ:

  • ื™ืžืคึผืœืขืžืขื ื˜ืขื“ ื“ืขืจื ืขื ื˜ืขืจื  ื–ื™ืš ืึท ื•ื•ืึทืจื™ืึทื ื˜ ืคื•ืŸ ื“ื™ ANALYZE ื‘ืึทืคึฟืขืœ, ื•ื•ืึธืก ืึทืœืึทื•ื– ืื™ืจ ืฆื• ื‘ืึทืงื•ืžืขืŸ ืึท ืคึผืึทืจื˜ื™ื™ื™ืฉ ื–ืึทืžืœื•ื ื’ ืคื•ืŸ ืกื˜ืึทื˜ื™ืกื˜ื™ืง ืื™ืŸ ื–ื™ื™ืขืจ ื’ืจื•ื™ืก ื“ืึทื˜ืึทื‘ื™ื™ืกื™ื–, ืึธืŸ ืึท ืคื•ืœ ื™ื‘ืขืจืงื•ืงืŸ ืคื•ืŸ ื™ื ื“ืขืงืกื™ื–. ื“ื™ ืฉื™ืขื•ืจ ืื•ื™ืฃ ื“ื™ ื ื•ืžืขืจ ืคื•ืŸ ืจืขืงืึธืจื“ืก ื•ื•ืขืŸ ืกืงืึทื ื™ื ื’ ืื™ื™ืŸ ืื™ื ื“ืขืงืก ืื™ื– ื‘ืึทืฉื˜ื™ืžื˜ ืžื™ื˜ ื“ื™ ื ื™ื™ึทืข ื“ื™ืจืขืงื˜ื™ื•ื• "ืคึผืจืึทื’ืžืึท ืึทื ืึทืœื™ืกื™ืก_ืœื™ืžื™ื˜".
  • ืฆื•ื’ืขื’ืขื‘ืŸ ื ื™ื™ึท ื•ื•ื™ืจื˜ื•ืึทืœ ื˜ื™ืฉ "ื‘ื™ื˜ืขืงืึธื“ืข", ื•ื•ืึธืก ืึธืคืคืขืจืก ืื™ื ืคึฟืึธืจืžืึทืฆื™ืข ื•ื•ืขื’ืŸ ื‘ื™ื˜ืขืงืึธื“ืข ืคืึทืจ-ืฆื•ื’ืขื’ืจื™ื™ื˜ ืื•ื™ืกื“ืจื•ืงืŸ (ืฆื•ื’ืขื’ืจื™ื™ื˜ ื•ื™ืกื–ืึธื’ื•ื ื’).
  • ืฆื•ื’ืขื’ืขื‘ืŸ VFS ืฉื™ื›ื˜ืข ื˜ืฉืขืงืงืกื•ื, ื•ื•ืึธืก ืžื•ืกื™ืฃ 8-ื‘ื™ื˜ืข ื˜ืฉืขืงืกืึทืžื– ืฆื• ื“ื™ ืกื•ืฃ ืคื•ืŸ ื™ืขื“ืขืจ ื‘ืœืึทื˜ ืคื•ืŸ ื“ืึทื˜ืŸ ืื™ืŸ ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก ืื•ืŸ ื˜ืฉืขืง ื–ื™ื™ ื™ืขื“ืขืจ ืžืึธืœ ืขืก ืื™ื– ืœื™ื™ืขื ืขืŸ ืคึฟื•ืŸ ื“ื™ ื“ืึทื˜ืึทื‘ื™ื™ืก. ื“ืขืจ ืฉื™ื›ื˜ืข ืึทืœืึทื•ื– ืื™ืจ ืฆื• ื“ืขื˜ืขืงื˜ ื“ืึทื˜ืึทื‘ื™ื™ืก ืฉืขื“ื™ืงืŸ ื•ื•ื™ ืึท ืจืขื–ื•ืœื˜ืึทื˜ ืคื•ืŸ ื˜ืจืึทืค - ืงืึธืจื•ืคึผืฆื™ืข ืคื•ืŸ โ€‹โ€‹ื‘ื™ื˜ืŸ ืื™ืŸ ืกื˜ืึธืจื™ื“ื–ืฉ ื“ืขื•ื•ื™ืกืขืก.
  • ืฆื•ื’ืขื’ืขื‘ืŸ ื ื™ื™ึท SQL ืคื•ื ืงืฆื™ืข iif (X, Y, Z), ืฆื•ืจื™ืงืงื•ืžืขืŸ ื“ื™ ื•ื•ืขืจื˜ ื™ ืื•ื™ื‘ ืื•ื™ืกื“ืจื•ืง X ืื™ื– ืืžืช, ืึธื“ืขืจ ื– ืึทื ื“ืขืจืฉ.
  • INSERT ืื•ืŸ UPDATE ืื•ื™ืกื“ืจื•ืงืŸ ืื™ืฆื˜ ืฉื˜ืขื ื“ื™ืง ื’ืขื•ื•ืขื ื“ื˜ ืคืจื™ื–ื™ื ื’ ื–ื™ื™ึทืœ ื˜ื™ื™ืคึผืก (ื–ื™ื™ึทืœ ืงื™ืจื‘ื•ืช) ืื™ื™ื“ืขืจ ืขื•ื•ืึทืœื•ืึทื˜ื™ื ื’ ื“ื™ ื‘ืื“ื™ื ื’ื•ื ื’ืขืŸ ืื™ืŸ ื“ื™ ื‘ืœืึธืง ื˜ืฉืขืง.
  • ื“ื™ ืฉื™ืขื•ืจ ืื•ื™ืฃ ื“ื™ ื ื•ืžืขืจ ืคื•ืŸ ืคึผืึทืจืึทืžืขื˜ืขืจืก ืื™ื– ื’ืขื•ื•ืืงืกืŸ ืคื•ืŸ 999 ืฆื• 32766.
  • ืฆื•ื’ืขื’ืขื‘ืŸ ื’ืขืฉืคึผืจื™ื™ื˜ UINT ืงืึทืœืึทื˜ื™ื ื’ ืกื™ืงื•ื•ืึทื ืก ืžื™ื˜ ืึท ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ ืกื™ืงื•ื•ืึทื ืก ืกืึธืจื˜ื™ื ื’ ื•ื•ืึธืก ื ืขืžื˜ ืื™ืŸ ื—ืฉื‘ื•ืŸ ื“ื™ ื™ื ื˜ืึทื“ื–ืฉืขืจื– ืื™ืŸ ื“ืขื ื˜ืขืงืกื˜ ืฆื• ืกืึธืจื˜ ื“ืขื ื˜ืขืงืกื˜ ืื™ืŸ ื ื•ืžืขืจื™ืงืึทืœ ืกื“ืจ.
  • ืื™ืŸ ื“ื™ ื‘ืึทืคึฟืขืœืŸ ืฉื•ืจื” ืฆื•ื‘ื™ื ื“, ื“ื™ ืึธืคึผืฆื™ืขืก "-csv", "-ascii" ืื•ืŸ "-skip" ื–ืขื ืขืŸ ืฆื•ื’ืขื’ืขื‘ืŸ ืฆื• ื“ื™ ".ื™ืžืคึผืึธืจื˜" ื‘ืึทืคึฟืขืœ. ื“ื™ ".ื“ืึทืžืคึผ" ื‘ืึทืคึฟืขืœ ืึทืœืึทื•ื– ื“ื™ ื ื•ืฆืŸ ืคื•ืŸ ืขื˜ืœืขื›ืข LIKE ื˜ืขืžืคึผืœืึทื˜ืขืก ืžื™ื˜ ื“ื™ ืจืขื–ื•ืœื˜ืึทื˜ ืžืขืจื“ื–ืฉื™ื ื’ ืคื•ืŸ ืึทืœืข ื˜ื™ืฉืŸ ืงืึธืจืึทืกืคึผืึทื ื“ื™ื ื’ ืฆื• ื“ื™ ืกืคึผืขืกื™ืคื™ืขื“ ืžืึทืกืงืก. ืฆื•ื’ืขื’ืขื‘ืŸ ".ืึธืึธื" ื‘ืึทืคึฟืขืœ ืคึฟืึทืจ ื“ื™ื‘ืึทื’ ื‘ื•ื™ืขืŸ. ืฆื•ื’ืขื’ืขื‘ืŸ "--ื‘ืึธื" ืึธืคึผืฆื™ืข ืฆื• ". ืขืงืกืกืขืœ", ". ืจืขื–ื•ืœื˜ืึทื˜" ืื•ืŸ ". ืึทืžืึธืœ" ืงืึทืžืึทื ื“ื–. ืฆื•ื’ืขื’ืขื‘ืŸ "--ืกื˜ืฉืขืžืึท" ืึธืคึผืฆื™ืข ืฆื• ื“ื™ ".ืคื™ืœืขืงื˜ืจืœ" ื‘ืึทืคึฟืขืœ.
  • ื“ื™ ESCAPE ืื•ื™ืกื“ืจื•ืง ืกืคึผืขืกื™ืคื™ืขื“ ืžื™ื˜ ื“ื™ LIKE ืึธืคึผืขืจืึทื˜ืึธืจ ืื™ืฆื˜ ืึธื•ื•ื•ืขืจืจื™ื™ื“ ื•ื•ื™ืœื“ืงืึทืจื“ืก, ืงืึธื ืกื™ืกื˜ืขื ื˜ ืžื™ื˜ PostgreSQL ื ืึทื˜ื•ืจ.

ืึทื“ื“ื™ื˜ื™ืึธื ืึทืœืœื™, ืžื™ืจ ืงืขื ืขืŸ ื˜ืึธืŸ ื“ื™ ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืคื•ืŸ ืึท ื ื™ื™ึท DBMS DuckDB, ื•ื•ืึธืก ืื™ื– ื“ืขื•ื•ืขืœืึธืคึผื™ื ื’ ืึท ื•ื•ืึทืจื™ืึทื ื˜ ืคื•ืŸ SQLite ืึธืคึผื˜ื™ืžื™ื–ืขื“ ืคึฟืึทืจ ื“ื•ืจื›ืคื™ืจื•ื ื’ ืึทื ืึทืœื™ื˜ื™ืฉืข ืคึฟืจืื’ืŸ.
ืื™ืŸ ืึทื“ื™ืฉืึทืŸ ืฆื• ื“ื™ ืฉืึธืœ ืงืึธื“ ืคึฟื•ืŸ SQLite, ื“ื™ ืคึผืจื•ื™ืขืงื˜ ื ื™ืฆื˜ ืึท ืคึผืึทืจืกืขืจ ืคึฟื•ืŸ PostgreSQL ืื•ืŸ ืึท Date Math ืงืึธืžืคึผืึธื ืขื ื˜ ืคึฟื•ืŸ ืžืึธื ืขื˜ื“ื‘, ื–ื™ื™ืŸ ืื™ื™ื’ืขื ืข ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ ืคึฟืขื ืฆื˜ืขืจ ืคืึทื ื’ืงืฉืึทื ื– (ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ื™ ืึทืœื’ืขืจื™ื“ืึทื ืกืขื’ืžืขื ื˜ ื˜ืจื™ ืึทื’ื’ืจืขื’ืึทื˜ื™ืึธืŸ), ื•ื•ืขืงื˜ืึธืจื™ื–ืขื“ ืึธื ืคึฟืจืขื’ ื“ื•ืจื›ืคื™ืจื•ื ื’ ืžืึธื˜ืึธืจ (ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ ื“ื™ ืึทืœื’ืขืจื™ื“ืึทื ืคื•ืŸ Hyper-Pipelining Query Execution), ื‘ื™ื‘ืœื™ืึธื˜ืขืง-ื‘ืื–ื™ืจื˜ ืจืขื’ื•ืœืขืจ ืื•ื™ืกื“ืจื•ืง ืคึผืจืึทืกืขืกืขืจ. ืจืขืงืกื ื•ืžืงืก, ื–ื™ื™ืŸ ืื™ื™ื’ืขื ืข ืึธื ืคึฟืจืขื’ ืึธืคึผื˜ื™ืžื™ื–ืขืจ ืื•ืŸ MVCC ืžืขืงืึทื ื™ื–ืึทื ืคึฟืึทืจ ืึธื ืคื™ืจื•ื ื’ ื“ื™ ืกื™ื™ืžืึทืœื˜ื™ื™ื ื™ืึทืก ื“ื•ืจื›ืคื™ืจื•ื ื’ ืคื•ืŸ ื“ื–ืฉืึธื‘ืก (Multi-Version Concurrency Control).
ืคึผืจืึธื™ืขืงื˜ ืงืึธื“ ืคื•ื ืื ื“ืขืจื’ืขื˜ื™ื™ืœื˜ ื“ื•ืจืš ืื•ื ื˜ืขืจ MIT ื“ืขืจืœื•ื™ื‘ืขื ื™ืฉ. ืึทื ื˜ื•ื•ื™ืงืœื•ื ื’ ืื™ื– ื ืึธืš ืื™ืŸ ื“ืขืจ ื‘ื™ื ืข ืคืึธืจืžื™ืจื•ื ื’ ื™ืงืกืคึผืขืจืžืขื ืึทืœ ืจื™ืœื™ืกื™ื–.

ืžืงื•ืจ: opennet.ru

ืœื™ื™ื’ืŸ ืึท ื‘ืึทืžืขืจืงื•ื ื’