how can I add row and columns in table heading in react material UI

Question

I am new to material UI and I am struggling to add columns in the table heading, I have provided an image I am trying to do like this, under the Economics there will be 3 columns also each column will take two more columns.

Here is my code:

   <Table sx={{ minWidth: 700 }} aria-label="customized table">
          <TableHead>
            <TableRow>
           <StyledTableCell align="left" scope="col">
                Economics
                <StyledTableCell align="left" scope="col">
                  1st
                  <StyledTableCell align="left">CQ</StyledTableCell>
                  <StyledTableCell align="left">MCQ</StyledTableCell>
                </StyledTableCell>
                <StyledTableCell align="left">
                  2nd
                  <StyledTableCell align="left">CQ</StyledTableCell>
                  <StyledTableCell align="left">MCQ</StyledTableCell>
                </StyledTableCell>
                <StyledTableCell align="left">
                  AVG
                  <StyledTableCell align="left">%</StyledTableCell>
                  <StyledTableCell align="left">GP</StyledTableCell>
                </StyledTableCell>
              </StyledTableCell>
            </TableRow>
          </TableHead>

The above code UI is like the below screenshot, it's too big and not aligned

I have used the scope="col" attribute inside the StyledTableCell but it's not working, is there anything that I am missing?

Thank you.

Mel Carlo Iguis · Accepted Answer · 2022-06-09 02:20:44Z

try adding this colSpan attribute

<StyledTableCell colSpan={6}>

you can check it here. in the spanning section https://mui.com/material-ui/react-table/

your code will look like this

   <Table stickyHeader aria-label="sticky table">
    <TableHead>
      <TableRow>
        <TableCell align="center" colSpan={6}>
          Economics
        </TableCell>
      </TableRow>
      <TableRow>
        <TableCell align="center" colSpan={2}>
          1st
        </TableCell>
        <TableCell align="center" colSpan={2}>
          2nd
        </TableCell>
        <TableCell align="center" colSpan={2}>
          AVG
        </TableCell>
      </TableRow>
      <TableRow>
        <TableCell align="center">CQ</TableCell>
        <TableCell align="center">MCQ</TableCell>
        <TableCell align="center">CQ</TableCell>
        <TableCell align="center">MCQ</TableCell>
        <TableCell align="center">%</TableCell>
        <TableCell align="center">GP</TableCell>
      </TableRow>
    </TableHead>
  </Table>

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