Fix CSV import for files with no rows, just headers (#4160)

studio/components/interfaces/TableGridEditor/SidePanelEditor/TableEditor/TableEditor.utils.ts

@@ -62,6 +62,10 @@ export const inferColumnType = (column: string, rows: object[]) => {
   // General strategy is to check the first row first, before checking across all the rows
   // to ensure uniformity in data type. Thinking we do this as an optimization instead of
   // checking all the rows up front.
+
+  // If there are no rows to infer for, default to text
+  if (rows.length === 0) return 'text'
+
   const columnData = (rows[0] as any)[column]
   const columnDataAcrossRows = rows.map((row: object) => (row as any)[column])
 

studio/stores/pgmeta/MetaStore.ts

@@ -393,7 +393,7 @@ export default class MetaStore implements IMetaStore {
 
     // If the user is importing data via a spreadsheet
     if (!isUndefined(importContent)) {
-      if (importContent.file) {
+      if (importContent.file && importContent.rowCount > 0) {
         // Via a CSV file
         const { error }: any = await this.insertRowsViaSpreadsheet(
           importContent.file,