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Combine data from multiple Excel tables into a single table

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This sample combines data from multiple Excel tables into a single table that includes all the rows. It assumes that all tables being used have the same structure.

There are two variations of this script:

  1. The first script combines all tables in the Excel file.
  2. The second script selectively gets tables within a set of worksheets.

Setup: Sample Excel file

This workbook contains the data, objects, and formatting expected by the script.

Download the sample workbook

Sample code: Combine data from multiple Excel tables into a single table

Add the following script to the sample workbook and try the sample yourself!

function main(workbook: ExcelScript.Workbook) {
  // Delete the "Combined" worksheet, if it's present.
  workbook.getWorksheet('Combined')?.delete();

  // Create a new worksheet named "Combined" for the combined table.
  const newSheet = workbook.addWorksheet('Combined');
  
  // Get the header values for the first table in the workbook.
  // This also saves the table list before we add the new, combined table.
  const tables = workbook.getTables();    
  const headerValues = tables[0].getHeaderRowRange().getTexts();
  console.log(headerValues);

  // Copy the headers on a new worksheet to an equal-sized range.
  const targetRange = newSheet.getRange('A1').getResizedRange(headerValues.length-1, headerValues[0].length-1);
  targetRange.setValues(headerValues);

  // Add the data from each table in the workbook to the new table.
  const combinedTable = newSheet.addTable(targetRange.getAddress(), true);
  for (let table of tables) {      
    let dataValues = table.getRangeBetweenHeaderAndTotal().getTexts();
    let rowCount = table.getRowCount();

    // If the table is not empty, add its rows to the combined table.
    if (rowCount > 0) {
      combinedTable.addRows(-1, dataValues);
    }
  }
}

Sample code: Combine data from multiple Excel tables in select worksheets into a single table

Download the sample file tables-select-copy.xlsx and use it with the following script to try it out yourself!

function main(workbook: ExcelScript.Workbook) {
  // Set the worksheet names to get tables from.
  const sheetNames = ['Sheet1', 'Sheet2', 'Sheet3'];
    
  // Delete the "Combined" worksheet, if it's present.
  workbook.getWorksheet('Combined')?.delete();

  // Create a new worksheet named "Combined" for the combined table.
  const newSheet = workbook.addWorksheet('Combined');

  // Create a new table with the same headers as the other tables.
  const headerValues = workbook.getWorksheet(sheetNames[0]).getTables()[0].getHeaderRowRange().getTexts();
  const targetRange = newSheet.getRange('A1').getResizedRange(headerValues.length-1, headerValues[0].length-1);
  targetRange.setValues(headerValues);
  const combinedTable = newSheet.addTable(targetRange.getAddress(), true);

  // Go through each listed worksheet and get their tables.
  sheetNames.forEach((sheet) => {
    const tables = workbook.getWorksheet(sheet).getTables();     
    for (let table of tables) {
      // Get the rows from the tables.
      let dataValues = table.getRangeBetweenHeaderAndTotal().getTexts();
      let rowCount = table.getRowCount();

      // If there's data in the table, add it to the combined table.
      if (rowCount > 0) {
          combinedTable.addRows(-1, dataValues);
      }
    }
  });
}

Training video: Combine data from multiple Excel tables into a single table

Watch Sudhi Ramamurthy walk through this sample on YouTube.