MetaTrader 5 build 2360: Extension of SQLite integration

SQLite database operation errors can now be analyzed using standard MQL5 tools. Appropriate error codes have been added in MQL5

6 March 2020

  1. MQL5: SQLite database operation errors can now be analyzed using standard MQL5 tools. The following error codes have been added:

    • ERR_DATABASE_ERROR — generic error.
    • ERR_DATABASE_INTERNAL — SQLite internal logic error.
    • ERR_DATABASE_PERM — access denied.
    • ERR_DATABASE_BUSY — database file locked.
    • ERR_DATABASE_LOCKED — database table locked.
    • ERR_DATABASE_NOMEM — insufficient memory for completing operation.
    • ERR_DATABASE_READONLY — attempt to write to read-only database.
    • ERR_DATABASE_IOERR — disk I/O error.
    • ERR_DATABASE_CORRUPT — database disk image corrupted.
    • ERR_DATABASE_FULL — insertion failed because database is full.
    • ERR_DATABASE_CANTOPEN — unable to open the database file.
    • ERR_DATABASE_PROTOCOL — database lock protocol error.
    • ERR_DATABASE_SCHEMA — internal use only.
    • ERR_DATABASE_TOOBIG — string or BLOB exceeds size limit.
    • ERR_DATABASE_CONSTRAINT — abort due to constraint violation.
    • ERR_DATABASE_MISMATCH — data type mismatch.
    • ERR_DATABASE_MISUSE — library used incorrectly.
    • ERR_DATABASE_AUTH — authorization denied.
    • ERR_DATABASE_RANGE — bind parameter error, incorrect index.
    • ERR_DATABASE_NOTADB — file opened that is not database file.

  2. MQL5: Fixed operation of the DatabaseImport function which enables data import from a file into a database table.
  3. MetaEditor: Fixed output of strings longer than 32KB to logs.
  4. MetaEditor: Fixed occasional incorrect encoding in messages sent from the Python console (stdout, stderr) into the Errors section of the editor.
  5. Updated documentation.


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