ToolJet/docs/versioned_docs/version-2.18.0/how-to/bulk-update-multiple-rows-in-table.md

---
id: bulk-update-multiple-rows
title: Bulk update multiple rows in table
---

# Bulk update multiple rows in table

Currently, the data sources in ToolJet have operation for **bulk update(GUI mode)** but that only works for changes made in the single row. We will soon be adding a new operation for bulk updating the multiple rows but for now we can bulk update multiple rows by creating a Custom JS query. 

In this guide, We have assumed that you have successfully connected the data source. For this guide, we will be using the PostgreSQL data source as an example database. Currently, this workaround can be used only for PostgreSQL and MySQL.

## 1. Create a query to get the data from the database

- Create a postgresql query in **SQL mode** and enter 
  
```sql
SELECT * FROM tooljet // replace tooljet with your table name
```

- Hit **Run** to fetch the data from the database

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/data.png)

</div>

## 2. Display the data on the table

- Go to the **Components** library on the right and drag a **Table** component onto the canvas
- Click on the handle of the **Table** component to open its properties on the right sidebar
- Populate the table with the data from the query by entering **`{{queries.<queryname>.data}}`** in the **Data** field

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/populate.png)

</div>

## 3. Make the columns editable

- Under the **Columns** accordion, click on the column name that you want to make editable
- On clicking the column name, a new section will open. Enable the toggle for **Make editable** to make the column editable

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/editable.png)

</div>

## 4. Enable Multiple Row Selection

- Under the **Row Selection** accordion, enable the **Allow Selection**, **Highlight Selected Row**, and **Bulk Selection** option

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/rowselect.png)

</div>

## 5. Create a Custom JS query

- Create a new Run Javascript query and use the code below to generate the SQL query for updating multiple rows.

```js
const uniqueIdentifier = "id"
const cols = Object.values(components.table1.changeSet).map((col, index) => {
  return {
    col: Object.keys(col),
    [uniqueIdentifier]: Object.values(components.table1.dataUpdates)[index][uniqueIdentifier],
    values: Object.values(col),
  };
});

const sql = cols.map((column) => {
  const { col, id, values } = column;
  const cols = col.map((col, index) => `${col} = '${values[index]}'`);
  return `UPDATE users SET ${cols.join(", ")} WHERE id = '${id}';`;
});

return sql
```
:::info
Here the **Unique identifier** is **id**, this is the column name that is used to identify the row in the database.
Update the **Unique identifier** if you are using a different column name.
Update **table1** with the name of the table you are using.
:::
<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/runjs1.png)

</div>

## 6. Create an Update query

- Create a postgresql query in **SQL mode** and rename it as **update**:
    
```sql
{{queries.runjs1.data.join(' ')}}
```

- This query will run the SQL query generated by the runjs1 query.

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/update.png)

</div>

## 7. Adding event handlers to execute queries in sequence

- Edit the **Table** component and add the event handler for **Save Changes** event so that whenever a user will edit the table and hit the **Save Changes** button the runjs1 query will run.
- Add **loading state** to table so that whenever the **users** or **update** query is running the table will show a loading state.

```js
{{queries.users.isLoading || queries.update.isLoading}} // add this in the loading state field of the table
```

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/savechanges.png)

</div>

- Now, go to the **runjs1** query and add a **Event** to run update query for **Query Success** Event. This will run the update query whenever the runjs1 query will be run.

<div style={{textAlign: 'center'}}>

![ToolJet - How To - Bulk update multiple rows in table](/img/how-to/bulk-update-multiple/new/querysuccess.png)

</div>

- Finally, go to the **update** query and add a **Event** to run the users query for **Query Success** Event. This will refresh the table whenever the update query will be run.