Add PostgreSQL checkpoint functionality and update related database operations

internal/report/create.go

@@ -279,6 +279,8 @@ func SetColAutoWidth(xlsx *excelize.File, sheetName string) error {
 	if err != nil {
 		return err
 	}
+	const minColWidth = 10
+	const maxColWidth = 80
 	for idx, col := range cols {
 		largestWidth := 0
 		for _, rowCell := range col {
@@ -287,12 +289,22 @@ func SetColAutoWidth(xlsx *excelize.File, sheetName string) error {
 				largestWidth = cellWidth
 			}
 		}
+		// Keep a sane minimum so sheets that rely on computed content
+		// (for example pivot output populated by Excel) don't collapse to width 0.
+		if largestWidth < minColWidth {
+			largestWidth = minColWidth
+		}
+		if largestWidth > maxColWidth {
+			largestWidth = maxColWidth
+		}
 		//fmt.Printf("SetColAutoWidth calculated largest width for column index '%d' is '%d'\n", idx, largestWidth)
 		name, err := excelize.ColumnNumberToName(idx + 1)
 		if err != nil {
 			return err
 		}
-		xlsx.SetColWidth(sheetName, name, name, float64(largestWidth))
+		if err := xlsx.SetColWidth(sheetName, name, name, float64(largestWidth)); err != nil {
+			return err
+		}
 	}
 	// No errors at this point
 	return nil