/usr/include/libgda-5.0/libgda/sql-parser/ is in libgda-5.0-dev 5.0.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libgda-5.0/libgda/sql-parser/gda-sql-parser-enum-types.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-sql-parser.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-sql-statement.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-compound.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-decl.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-delete.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-insert.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-parts.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-pspec.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-select.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-trans.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-unknown.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-update.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct-util.h
/usr/include/libgda-5.0/libgda/sql-parser/gda-statement-struct.h