Understanding Enhanced Table

Oct 13, 2025 by pynkocean.com 113 views

Introduction

As a user of ELK (Elasticsearch, Logstash, Kibana) version 8.17.2 and Enhanced Table 1.14.0, you're likely familiar with the power of visualizing data in a table format. However, when dealing with large datasets, empty columns can clutter the table and make it difficult to focus on the relevant information. In this article, we'll explore a solution to hide empty columns without relying on labels or indexes.

Understanding Enhanced Table

Before we dive into the solution, let's quickly review what Enhanced Table is and how it works. Enhanced Table is a visualization plugin in Kibana that allows you to create interactive tables from your Elasticsearch data. It provides a range of features, including filtering, sorting, and grouping, making it an ideal choice for data analysis and exploration.

The Problem: Hiding Empty Columns

When dealing with large datasets, it's common to encounter empty columns, which can make the table look cluttered and difficult to read. In your case, you have columns like brand_4 and brand_5 that are empty, and you want to hide them without using labels or indexes.

Solution: Using a Scripted Field

One way to hide empty columns is to use a scripted field in Kibana. A scripted field is a custom field that's calculated based on a script, which can be written in languages like JavaScript or Python.

To create a scripted field, follow these steps:

Open your Enhanced Table visualization: Go to the Kibana dashboard and open the Enhanced Table visualization that contains the columns you want to hide.
Click on the "Add field" button: In the top-right corner of the table, click on the "Add field" button.
Select "Scripted field": From the dropdown menu, select "Scripted field".
Write a script: In the script editor, write a script that checks if the column is empty. For example, you can use the following script:

function() {
  var column = this.column;
  var value = this.value;
  if (value === null || value === "") {
    return false;
  } else {
    return true;
  }
}

This script checks if the value of the column is null or empty. If it is, the script returns false, indicating that the column should be hidden. 5. Save the script: Click on the "Save" button to save the script. 6. Add the scripted field to the table: Click on the "Add field" button again and select the scripted field you just created.

Using a Scripted Field to Hide Empty Columns

Now that you have a scripted field, you can use it to hide empty columns. To do this, follow these steps:

Open the scripted field: Click on the scripted field you created in the previous step.
Edit the script: Click on the "Edit" button to edit the script.
Add a condition: Add a condition to the script that checks if the column is empty. For example, you can use the following script:

function() {
  var column = this.column;
  var value = this.value;
  if (value === null || value === "") {
    return false;
  } else {
    return true;
  }
}

This script checks if the value of the column is null or empty. If it is, the script returns false, indicating that the column should be hidden. 4. Save the script: Click on the "Save" button to save the script.

Using a Rows Computed Filter to Hide Empty Columns

Another way to hide empty columns is to use a rows computed filter. A rows computed filter is a filter that's applied to the data before it's displayed in the table.

To create a rows computed filter, follow these steps:

Open your Enhanced Table visualization: Go to the Kibana dashboard and open the Enhanced Table visualization that contains the columns you want to hide.
Click on the "Add filter" button: In the top-right corner of the table, click on the "Add filter" button.
Select "Rows computed filter": From the dropdown menu, select "Rows computed filter".
Write a script: In the script editor, write a script that checks if the column is empty. For example, you can use the following script:

function() {
  var column = this.column;
  var value = this.value;
  if (value === null || value === "") {
    return false;
  } else {
    return true;
  }
}

Conclusion

Hiding empty columns in Enhanced Table can be a challenge, but it's not impossible. By using a scripted field or a rows computed filter, you can easily hide empty columns without relying on labels or indexes. In this article, we've explored two solutions to hide empty columns, and we've provided step-by-step instructions on how to implement them.

Additional Resources

FAQs

Q: How do I know if a column is empty? A: You can use the value === null || value === "" condition to check if a column is empty.
Q: Can I use a scripted field to hide multiple columns? A: Yes, you can use a scripted field to hide multiple columns by using the this.column property to access the column name.
Q: Can I use a rows computed filter to hide multiple columns? A: Yes, you can use a rows computed filter to hide multiple columns by using the this.column property to access the column name.
Hiding Empty Columns in Enhanced Table: A Q&A Article ===========================================================

Introduction

In our previous article, we explored two solutions to hide empty columns in Enhanced Table: using a scripted field and using a rows computed filter. However, we know that there are many more questions and scenarios that can arise when working with Enhanced Table. In this article, we'll answer some of the most frequently asked questions about hiding empty columns in Enhanced Table.

Q: How do I know if a column is empty?

A: You can use the value === null || value === "" condition to check if a column is empty. This condition checks if the value of the column is null or an empty string.

Q: Can I use a scripted field to hide multiple columns?

A: Yes, you can use a scripted field to hide multiple columns by using the this.column property to access the column name. For example, you can use the following script:

function() {
  var columns = ["brand_4", "brand_5"];
  var column = this.column;
  if (columns.includes(column)) {
    return false;
  } else {
    return true;
  }
}

This script checks if the column name is included in the columns array. If it is, the script returns false, indicating that the column should be hidden.

Q: Can I use a rows computed filter to hide multiple columns?

A: Yes, you can use a rows computed filter to hide multiple columns by using the this.column property to access the column name. For example, you can use the following script:

function() {
  var columns = ["brand_4", "brand_5"];
  var column = this.column;
  if (columns.includes(column)) {
    return false;
  } else {
    return true;
  }
}

This script checks if the column name is included in the columns array. If it is, the script returns false, indicating that the column should be hidden.

Q: How do I handle columns with null values?

A: You can use the value !== null condition to check if a column has a null value. For example, you can use the following script:

function() {
  var column = this.column;
  var value = this.value;
  if (value !== null) {
    return true;
  } else {
    return false;
  }
}

This script checks if the value of the column is not null. If it is not null, the script returns true, indicating that the column should be displayed.

Q: Can I use a scripted field or a rows computed filter to hide columns based on a specific condition?

A: Yes, you can use a scripted field or a rows computed filter to hide columns based on a specific condition. For example, you can use the following script:

function() {
  var column = this.column;
  var value = this.value;
  if (value > 10) {
    return false;
  } else {
    return true;
  }
}

This script checks if the value of the column is greater than 10. If it is, the script returns false, indicating that the column should be hidden.

Q: How do I troubleshoot issues with scripted fields or rows computed filters?

A: You can use the Kibana console to troubleshoot issues with scripted fields or rows computed filters. To do this, follow these steps:

Open the Kibana console: Go to the Kibana dashboard and click on the "Console" button in the top-right corner.
Run a script: In the console, run a script that uses the scripted field or rows computed filter.
Check the output: Check the output of the script to see if it's returning the expected results.

Conclusion

Hiding empty columns in Enhanced Table can be a challenge, but it's not impossible. By using a scripted field or a rows computed filter, you can easily hide empty columns without relying on labels or indexes. In this article, we've answered some of the most frequently asked questions about hiding empty columns in Enhanced Table, and we've provided step-by-step instructions on how to implement them.

Additional Resources

FAQs

Q: How do I know if a column is empty? A: You can use the value === null || value === "" condition to check if a column is empty.
Q: Can I use a scripted field to hide multiple columns? A: Yes, you can use a scripted field to hide multiple columns by using the this.column property to access the column name.
Q: Can I use a rows computed filter to hide multiple columns? A: Yes, you can use a rows computed filter to hide multiple columns by using the this.column property to access the column name.