DbSchema includes a free CSV editor capable of handling large files — up to 5 GB, depending on available memory. The editor is available in both the Community and Pro editions.
Open the editor from Query Tools → CSV Editor in the application menu.
You will be prompted to choose a file and configure the format. Press Cancel at this step to start with a blank CSV instead.
When opening an existing file, configure the following settings:
DbSchema attempts to auto-detect all of these settings from the file content. Verify the preview looks correct before opening.
Right-click any column header to insert or delete a column. Right-click any row header to insert or delete a row. Both operations take effect in the in-memory view and are written to disk when you save.
Right-click any column header to access filter and sort options. DbSchema detects the column data type (text, numeric, date) and applies type-appropriate sorting — so numeric columns sort by value rather than alphabetically.
Double-click any cell to edit its value inline. Press Enter or click another cell to confirm the change.
Use File → Save to overwrite the current file, or File → Save As to write to a new file path and format. The Save As dialog lets you change the delimiter, encoding, and quote character before writing.