CodeQL documentation

dataset import


codeql dataset import --dbscheme=<file> [--threads=<num>] <options>... [--] <dataset> <trap>...


[Plumbing] Import a set of TRAP files to a raw dataset.

Create a dataset by populating it with TRAP files, or add data from TRAP files to an existing dataset. Updating a dataset is only possible if it has the correct dbscheme and its ID pool has been preserved from the initial import.



[Mandatory] Path to the raw QL dataset to create or update. The directory will be created if it doesn’t already exist.


Paths to .trap(.gz) files to import, or to directories that will be recursively scanned for .trap(.gz) files. If no files are given, an empty dataset will be created.

-S, --dbscheme=<file>

[Mandatory] The dbscheme definition that describes the TRAP files you want to import.

-j, --threads=<num>

Use this many threads for the import operation.

Defaults to 1. You can pass 0 to use one thread per core on the machine, or -N to leave N cores unused (except still use at least one thread).


[Advanced] Report errors for unused labels.


[Advanced] Report errors for repeated labels.


[Advanced] Report errors for redefined labels.


[Advanced] Report errors for labels used before they’re defined.


[Advanced] Construct entity IDs that encode the location in the TRAP file they came from. Can be useful for debugging of TRAP generators, but takes up a lot of space in the dataset.

Common options

-h, --help

Show this help text.


[Advanced] Give option to the JVM running the command.

(Beware that options containing spaces will not be handled correctly.)

-v, --verbose

Incrementally increase the number of progress messages printed.

-q, --quiet

Incrementally decrease the number of progress messages printed.


[Advanced] Explicitly set the verbosity level to one of errors, warnings, progress, progress+, progress++, progress+++. Overrides -v and -q.


[Advanced] Write detailed logs to one or more files in the given directory, with generated names that include timestamps and the name of the running subcommand.

(To write a log file with a name you have full control over, instead give --log-to-stderr and redirect stderr as desired.)