NAME

       mmCQL - SQL-like tool to manipulate mmCIF files

SYNOPSIS

       mmCQL [OPTION] input [output]

DESCRIPTION

       The mmCIF format is a structured format and with a proper dictionary it even looks a lot
       like a database with relations between categories that act as tables.

       In pipelines processing mmCIF files it is often required to simply change the content of a
       single field, or add some data, delete it, etc. For this the mmCQL tool offers a SQL like
       language.

       This tool is not a complete and finished piece of software, it lack perhaps a lot of
       functionality. However, it is already very useful to simply lookup some value or change
       items based on some criteria.

OPTIONS

       --force
              Write output file even if the name of the output file is the same as the input
              file, which will of course overwrite the input file.

       --script=<file>, -f <file>
              Read commands from the file <file.

       --verbose,-v
              Be more verbose, useful to diagnose validation errors.

EXAMPLES

       You can do simple updates, like so:

       UPDATE struct_asym SET id = 'X' WHERE id = 'BBB';

       This will rename the asym with ID 'BBB' to 'X'. All children of this asym will be renamed
       as well if the proper dictionary was loaded.

AUTHOR

       Written by Maarten L. Hekkelman <maarten@hekkelman.com>

REPORTING BUGS

       Report bugs at https://github.com/PDB-REDO/cif-tools/issues

SEE ALSO

       cif-diff, cif-drop, cif-grep, cif-merge, cif2pdb, mmCQL, pdb2cif.