I have experience in writing Extract Transform Load (ETL) software, taking large text files and parsing them into our chosen SQL DB. In my profile that would be the job at Medical Data Systems (ETL was medical billing data). Largest text file processed was over 600 mb / 15,000,000 records. As long as the data is always in the same format I can write you a stand alone Windows program that you use to pick the file (using a standard Windows File Picker) and process it into any one of the following database types: Microsoft SQL Server, Oracle, MariaDB, AS/400, Sybase, Informix, DB2, Progress, XML, PostgreSQL, SQLite, Access2007 or later, XLSX/XLS, dBase3+, dBase4, FoxPro, Clipper5 or another text file. You must provide and set up the receiving database, that is not included in the bid (that would be a separate project probably best handled by local folks). You can install this software on a reasonably powerful computer of your choice.
Thanks, Art Bonds, Wind River Data Solutions, LLC, Bristol, Tennessee