Choosing Between MatTable and Custom HTML Tables in Angular Material

The Data Grid Dilemma

When building data-heavy dashboards in Angular, the primary decision is whether to use the MatTable component or a standard HTML <table> styled with Material CSS. The wrong choice leads to either an over-engineered implementation for simple lists or a manual, error-prone recreation of sorting and pagination for complex datasets.

The key takeaway: Use MatTable when you need built-in integration with MatPaginator and MatSort, or when handling large datasets via a DataSource. Use native HTML tables when the data structure is static, the row count is low, and you need absolute control over the DOM for accessibility or legacy CSS reasons.

Comparison of Implementation Paths

Feature	MatTable (DataSource)	Native HTML Table
State Management	Built-in via MatSort/MatPaginator	Manual implementation
Rendering	Template-driven (matColumnDef)	Standard <tr> and <td>
Performance	Optimized for large lists via CDK	Browser-dependent; slow for 100+ rows
Styling	Strict Material Design specs	Fully flexible / Custom CSS
Setup Overhead	High (requires DataSource contract)	Low (standard HTML)

Trade-offs and Constraints

The MatTable is not a simple wrapper; it is a logic-driven component. To use it effectively, you must implement a DataSource, which is a class that manages the data stream. This adds a layer of abstraction between your API response and the UI.

Constraints to consider:

• Version Alignment: Angular Material and the Component Dev Kit (CDK) must share the exact same version. A mismatch often results in NullInjectionError when the table attempts to access required services.
• DOM Structure: MatTable renders a specific structure that may conflict with some third-party CSS frameworks or legacy accessibility scripts that expect a standard <tbody>.
• Bundle Size: Importing MatTableModule pulls in several CDK dependencies. For a single, small table, this may be unnecessary overhead.

Implementing MatTable with a DataSource

To implement a professional data grid, avoid passing a simple array to the table. Instead, use a MatTableDataSource to enable seamless integration with sorting and paging.

Module Configuration

Run this in your feature module or app.module.ts. Ensure you have the required permissions to modify the project's dependency tree.

import { MatTableModule } from '@angular/material/table';
import { MatPaginatorModule } from '@angular/material/paginator';
import { MatSortModule } from '@angular/material/sort';

@NgModule({
  imports: [
    MatTableModule,
    MatPaginatorModule,
    MatSortModule
  ]
})
export class DataModule { }

Component Logic

In your TypeScript file, define the columns and initialize the data source. This example assumes Angular 15+.

import { Component, ViewChild, AfterViewInit } from '@angular/core';
import { MatTableDataSource } from '@angular/material/table';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort } from '@angular/material/sort';

@Component({
  selector: 'app-user-table',
  templateUrl: './user-table.component.html'
})
export class UserTableComponent implements AfterViewInit {
  displayedColumns: string[] = ['id', 'name', 'email'];
  dataSource = new MatTableDataSource([
    {id: 1, name: 'Jane Doe', email: '[contact removed]'},
    {id: 2, name: 'John Smith', email: '[contact removed]'},
  ]);

  @ViewChild(MatPaginator) paginator!: MatPaginator;
  @ViewChild(MatSort) sort!: MatSort;

  ngAfterViewInit() {
    // Link the paginator and sort to the data source
    this.dataSource.paginator = this.paginator;
    this.dataSource.sort = this.sort;
  }
}

Template Definition

The template uses matColumnDef to map data keys to table columns.

<table mat-table [dataSource]>
  <ng-container matColumnDef="id">
    <th mat-header-cell *matHeaderCellDef mat-sort-header> ID </th>
    <td mat-cell *matCellDef="let element"> {{element.id}} </td>
  </ng-container>

  <ng-container matColumnDef="name">
    <th mat-header-cell *matHeaderCellDef mat-sort-header> Name </th>
    <td mat-cell *matCellDef="let element"> {{element.name}} </td>
  </ng-container>

  <ng-container matColumnDef="email">
    <th mat-header-cell *matHeaderCellDef mat-sort-header> Email </th>
    <td mat-cell *matCellDef="let element"> {{element.email}} </td>
  </ng-container>

  <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
  <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>

<mat-paginator [pageSizeOptions]="[5, 10, 20]" showFirstLastButtons></mat-paginator>

Verification and Diagnostics

To verify the implementation is working correctly, perform the following checks:

• DOM Inspection: Open Browser DevTools and inspect the table. You should see classes like mat-mdc-table (in newer versions) or mat-table. If you see standard <table> tags without these classes, the module was not imported correctly.
• Interaction Test: Click a column header. The mat-sort-header should trigger a visual indicator (arrow) and reorder the rows. If the rows do not move, verify that this.dataSource.sort = this.sort; was called inside ngAfterViewInit, not ngOnInit.
• Pagination Check: Change the page size in the paginator. The number of rendered <tr mat-row> elements should update immediately.

Rollback Procedure

If MatTable introduces too much complexity or breaks existing CSS layouts, revert to a native table by:

1. Removing MatTableModule, MatPaginatorModule, and MatSortModule from the imports.
2. Replacing the <table mat-table> and <ng-container> blocks with a standard <table> <thead> <tbody> structure.
3. Replacing MatTableDataSource with a standard TypeScript array.