2023-02-24 07:46:48 +00:00
|
|
|
---
|
2023-12-05 03:46:54 +00:00
|
|
|
title: Sheets with AlaSQL
|
|
|
|
|
sidebar_label: AlaSQL
|
2024-03-18 08:24:41 +00:00
|
|
|
pagination_prev: demos/cli/index
|
2023-02-28 11:40:44 +00:00
|
|
|
pagination_next: demos/local/index
|
2023-02-24 07:46:48 +00:00
|
|
|
sidebar_custom_props:
|
|
|
|
|
sql: true
|
|
|
|
|
---
|
|
|
|
|
|
2023-04-09 21:13:24 +00:00
|
|
|
<head>
|
|
|
|
|
<script src="/alasql/alasql.js"></script>
|
|
|
|
|
</head>
|
|
|
|
|
|
2023-02-24 07:46:48 +00:00
|
|
|
import current from '/version.js';
|
2023-04-29 11:21:37 +00:00
|
|
|
import CodeBlock from '@theme/CodeBlock';
|
2023-02-24 07:46:48 +00:00
|
|
|
|
2023-08-20 20:39:35 +00:00
|
|
|
[AlaSQL](https://alasql.org/) is a pure JavaScript in-memory SQL database. It
|
|
|
|
|
has built-in support for SheetJS through the `XLSX` target operator.
|
|
|
|
|
|
|
|
|
|
[SheetJS](https://sheetjs.com) is a JavaScript library for reading and writing
|
|
|
|
|
data from spreadsheets.
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
This demo covers basic concepts pertaining to data import and export. The
|
|
|
|
|
official documentation includes advanced examples and deployment tips as well as
|
|
|
|
|
strategies for general data processing in AlaSQL expressions.
|
|
|
|
|
|
2023-11-28 07:05:59 +00:00
|
|
|
:::note Tested Deployments
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
This demo was tested in the following environments:
|
|
|
|
|
|
|
|
|
|
| Environment | AlaSQL | Date |
|
|
|
|
|
|:--------------------|:-------|:----------:|
|
2024-06-04 03:54:48 +00:00
|
|
|
| NodeJS | 3.1.0 | 2024-06-03 |
|
|
|
|
|
| Standalone (Chrome) | 3.1.0 | 2024-06-03 |
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
:::
|
|
|
|
|
|
|
|
|
|
## Live Demo
|
|
|
|
|
|
2024-04-26 04:16:13 +00:00
|
|
|
This demo fetches https://docs.sheetjs.com/pres.numbers, performs a `SELECT`
|
|
|
|
|
query using the built-in AlaSQL + SheetJS integration, then displays the result.
|
|
|
|
|
Using the result as a data source, the demo will write to a new spreadsheet.
|
2023-04-09 21:13:24 +00:00
|
|
|
|
2024-04-08 04:47:04 +00:00
|
|
|
<details>
|
|
|
|
|
<summary><b>Demo AlaSQL Queries</b> (click to show)</summary>
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
```sql title="AlaSQL Query for reading data from a workbook"
|
|
|
|
|
SELECT `Index`, -- "Index" field is the "Index" column of the sheet
|
|
|
|
|
UPPER(`Name`) AS `Nom` -- "Nom" field will be uppercase of "Name" column
|
|
|
|
|
FROM XLSX(?, { -- Parse the workbook bytes passed to alasql.promise
|
|
|
|
|
autoExt: false -- This option is required in the browser
|
|
|
|
|
})
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
```sql title="AlaSQL Query for writing data to a workbook"
|
|
|
|
|
SELECT * -- use every field from every row in dataset
|
|
|
|
|
INTO XLSX( -- export data to file
|
|
|
|
|
"SheetJSAlaSQL.xlsx" -- filename for export
|
|
|
|
|
) FROM ?
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
</details>
|
|
|
|
|
|
2023-09-24 03:59:48 +00:00
|
|
|
:::caution pass
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
If the live demo shows a message
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
|
alasql undefined
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
please refresh the page. This is a known bug in the documentation generator.
|
|
|
|
|
|
|
|
|
|
:::
|
|
|
|
|
|
|
|
|
|
```jsx live
|
|
|
|
|
function SheetJSAlaSQL() {
|
|
|
|
|
const q1 = "SELECT `Index`, UPPER(`Name`) AS `Nom` FROM XLSX(?,{autoExt:false})";
|
|
|
|
|
const q2 = `SELECT * INTO XLSX("SheetJSAlaSQL.xlsx") FROM ?`;
|
2024-04-26 04:16:13 +00:00
|
|
|
const url = "https://docs.sheetjs.com/pres.numbers";
|
2023-04-09 21:13:24 +00:00
|
|
|
const [rows, setRows] = React.useState([]);
|
|
|
|
|
const loadURL = React.useCallback(async() => {
|
|
|
|
|
if(typeof alasql=="undefined") return setRows([{Nom:"alasql undefined"}]);
|
|
|
|
|
const blob = await (await fetch(url)).blob();
|
|
|
|
|
const data = URL.createObjectURL(blob);
|
2023-04-18 20:26:59 +00:00
|
|
|
const res = await alasql.promise(q1,[data]);
|
2023-04-09 21:13:24 +00:00
|
|
|
setRows(res);
|
|
|
|
|
await alasql.promise(q2, [res]);
|
|
|
|
|
}, []);
|
|
|
|
|
return ( <>
|
|
|
|
|
<pre><b>URL: </b>{url}<br/><b>Import: </b>{q1}<br/><b>Export: </b>{q2}</pre>
|
|
|
|
|
<table><tr><th>Index</th><th>Nom</th></tr>
|
|
|
|
|
{rows.map(({Nom, Index}) => <tr><td>{Index}</td><td>{Nom}</td></tr>)}
|
|
|
|
|
</table>
|
|
|
|
|
<button onClick={loadURL}>Click to start</button>
|
|
|
|
|
</> );
|
|
|
|
|
}
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
## Browser
|
|
|
|
|
|
|
|
|
|
#### Standalone Scripts
|
|
|
|
|
|
2023-09-22 06:32:55 +00:00
|
|
|
The [SheetJS Standalone scripts](/docs/getting-started/installation/standalone)
|
|
|
|
|
should be loaded before the `alasql` script:
|
2023-04-09 21:13:24 +00:00
|
|
|
|
2023-05-07 13:58:36 +00:00
|
|
|
<CodeBlock language="html">{`\
|
2023-04-27 09:12:19 +00:00
|
|
|
<script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/shim.min.js"></script>
|
|
|
|
|
<script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>
|
|
|
|
|
<script src="https://cdn.jsdelivr.net/npm/alasql"></script>`}
|
2023-05-07 13:58:36 +00:00
|
|
|
</CodeBlock>
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
#### Frameworks and Bundlers
|
|
|
|
|
|
|
|
|
|
`alasql` uses an older version of the library. It can be overridden through a
|
|
|
|
|
`package.json` override. The lines should be added *before* installing `alasql`:
|
|
|
|
|
|
2023-05-07 13:58:36 +00:00
|
|
|
<CodeBlock language="json">{`\
|
2023-04-09 21:13:24 +00:00
|
|
|
{
|
|
|
|
|
/* add this part before "name" */
|
|
|
|
|
/* highlight-start */
|
|
|
|
|
"overrides": {
|
|
|
|
|
"xlsx": "https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz"
|
|
|
|
|
},
|
|
|
|
|
/* highlight-end */
|
|
|
|
|
"name": "my-project",
|
|
|
|
|
/* ... more fields ... */
|
|
|
|
|
`}
|
2023-05-07 13:58:36 +00:00
|
|
|
</CodeBlock>
|
2023-04-09 21:13:24 +00:00
|
|
|
|
|
|
|
|
After adding the override, AlaSQL can be installed through `npm`:
|
|
|
|
|
|
|
|
|
|
```bash
|
2023-05-07 13:58:36 +00:00
|
|
|
npm i --save alasql
|
2023-04-09 21:13:24 +00:00
|
|
|
```
|
|
|
|
|
|
|
|
|
|
In imports, the SheetJS library must be passed to AlaSQL as shown below:
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
import * as alasql from 'alasql';
|
|
|
|
|
import * as XLSX from 'xlsx';
|
|
|
|
|
alasql.utils.isBrowserify = false;
|
|
|
|
|
alasql.utils.global.XLSX = XLSX;
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
### Reading Files
|
|
|
|
|
|
|
|
|
|
The `XLSX` "from" target expects a filename. In the browser, AlaSQL uses object
|
|
|
|
|
URLs which can be created from `Blob` or `File` objects.
|
|
|
|
|
|
|
|
|
|
The following snippet fetches data and passes to AlaSQL:
|
|
|
|
|
|
|
|
|
|
```js
|
2024-04-26 04:16:13 +00:00
|
|
|
const blob = await (await fetch("https://docs.sheetjs.com/pres.numbers")).blob();
|
2023-04-19 20:03:23 +00:00
|
|
|
const data = URL.createObjectURL(blob);
|
2023-04-09 21:13:24 +00:00
|
|
|
const res = await alasql.promise("SELECT * FROM XLSX(?, {autoExt: false}", [data]);
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
By default, the `XLSX` "from" target automatically adds a `.xlsx` extension. To
|
|
|
|
|
read URLs, the `autoExt: false` option should be passed as the second argument:
|
|
|
|
|
|
|
|
|
|
```sql
|
|
|
|
|
SELECT `Name`, `Index` FROM XLSX(
|
|
|
|
|
? --<< this will be the URL passed into `alasql.promise`
|
|
|
|
|
// highlight-start
|
|
|
|
|
, { --<< options are supplied as the second argument to XLSX operator
|
|
|
|
|
autoExt: false --<< do not automatically add ".xlsx" extension!
|
|
|
|
|
}
|
|
|
|
|
// highlight-end
|
|
|
|
|
) WHERE `Index` < 45
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
By default the workbook is parsed and `sheet_to_json` is used to pull data:
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
(async() => {
|
2024-04-26 04:16:13 +00:00
|
|
|
const blob = await (await fetch("https://docs.sheetjs.com/pres.numbers")).blob();
|
2023-04-19 20:03:23 +00:00
|
|
|
const data = URL.createObjectURL(blob);
|
2023-04-09 21:13:24 +00:00
|
|
|
const aoo = await alasql.promise("SELECT * FROM XLSX(?, {autoExt: false}", [data]);
|
|
|
|
|
console.log(aoo); // [ { Name: "Bill Clinton", Index: 42 }, ...]
|
|
|
|
|
})();
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
### Writing Files
|
|
|
|
|
|
|
|
|
|
The `XLSX` "into" target calls `XLSX.writeFile` under the hood:
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
(async() => {
|
|
|
|
|
const data = [
|
|
|
|
|
{ Name: "Bill Clinton", Index: 42 },
|
2023-12-05 03:46:54 +00:00
|
|
|
{ Name: "SheetJS Dev", Index: 47 }
|
2023-04-09 21:13:24 +00:00
|
|
|
];
|
2023-05-27 23:07:45 +00:00
|
|
|
await alasql.promise(`SELECT * INTO XLSX("PresMod5.xlsx") FROM ?`, [data]);
|
2023-04-09 21:13:24 +00:00
|
|
|
/* PresMod5.xlsx will be created */
|
|
|
|
|
})();
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
## NodeJS
|
2023-02-24 07:46:48 +00:00
|
|
|
|
2023-09-24 03:59:48 +00:00
|
|
|
:::caution pass
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
`alasql` uses an older version of the library. It can be overridden through a
|
|
|
|
|
`package.json` override in the latest versions of NodeJS:
|
|
|
|
|
|
2023-05-07 13:58:36 +00:00
|
|
|
<CodeBlock language="json">{`\
|
2023-02-24 07:46:48 +00:00
|
|
|
{
|
|
|
|
|
"overrides": {
|
|
|
|
|
"xlsx": "https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz"
|
|
|
|
|
}
|
|
|
|
|
}`}
|
2023-05-07 13:58:36 +00:00
|
|
|
</CodeBlock>
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
:::
|
|
|
|
|
|
2023-04-09 21:13:24 +00:00
|
|
|
### Reading Files
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
By default, the `XLSX` "from" target automatically adds a `.xlsx` extension. To
|
|
|
|
|
read files with an arbitrary filename, the `autoExt: false` option should be
|
|
|
|
|
passed as the second argument:
|
|
|
|
|
|
|
|
|
|
```sql
|
|
|
|
|
SELECT `Name`, `Index` FROM XLSX(
|
|
|
|
|
"pres.numbers" --<< filename is "pres.numbers"
|
|
|
|
|
// highlight-start
|
|
|
|
|
, { --<< options are supplied as the second argument to XLSX operator
|
|
|
|
|
autoExt: false --<< do not automatically add ".xlsx" extension!
|
|
|
|
|
}
|
|
|
|
|
// highlight-end
|
|
|
|
|
) WHERE `Index` < 45
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
By default the workbook is parsed and `sheet_to_json` is used to pull data:
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
const { promise: alasql } = require("alasql");
|
|
|
|
|
|
|
|
|
|
(async() => {
|
2023-04-09 21:13:24 +00:00
|
|
|
const aoo = await alasql(`SELECT * from XLSX("pres.xlsx", {autoExt: false})`);
|
2023-02-24 07:46:48 +00:00
|
|
|
console.log(aoo); // [ { Name: "Bill Clinton", Index: 42 }, ...]
|
|
|
|
|
})();
|
|
|
|
|
```
|
|
|
|
|
|
2023-04-09 21:13:24 +00:00
|
|
|
### Writing Files
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
The `XLSX` "into" target calls `XLSX.writeFile` under the hood:
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
const { promise: alasql } = require("alasql");
|
|
|
|
|
|
|
|
|
|
(async() => {
|
|
|
|
|
const data = [
|
|
|
|
|
{ Name: "Bill Clinton", Index: 42 },
|
2023-12-05 03:46:54 +00:00
|
|
|
{ Name: "SheetJS Dev", Index: 47 }
|
2023-02-24 07:46:48 +00:00
|
|
|
];
|
2023-04-09 21:13:24 +00:00
|
|
|
await alasql(`SELECT * INTO XLSX("PresMod5.xlsx") FROM ?`, [data]);
|
|
|
|
|
/* PresMod5.xlsx will be created */
|
2023-02-24 07:46:48 +00:00
|
|
|
})();
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
### NodeJS Example
|
|
|
|
|
|
|
|
|
|
1) Create an empty folder for the project:
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
mkdir alasql
|
|
|
|
|
cd alasql
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
2) In the folder, create a stub `package.json` with the `xlsx` override:
|
|
|
|
|
|
2023-04-29 11:21:37 +00:00
|
|
|
<CodeBlock language="json" title="package.json">{`\
|
2023-02-24 07:46:48 +00:00
|
|
|
{
|
|
|
|
|
"overrides": {
|
2023-04-29 11:21:37 +00:00
|
|
|
"xlsx": "https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz"
|
2023-02-24 07:46:48 +00:00
|
|
|
}
|
2023-04-29 11:21:37 +00:00
|
|
|
}`}
|
|
|
|
|
</CodeBlock>
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
3) Install SheetJS and AlaSQL:
|
|
|
|
|
|
2023-04-29 11:21:37 +00:00
|
|
|
<CodeBlock language="bash">{`\
|
|
|
|
|
npm i --save alasql@3.1.0 https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
|
|
|
|
|
</CodeBlock>
|
2023-02-24 07:46:48 +00:00
|
|
|
|
2024-04-26 04:16:13 +00:00
|
|
|
4) Download the test file https://docs.sheetjs.com/pres.numbers :
|
2023-02-24 07:46:48 +00:00
|
|
|
|
|
|
|
|
```bash
|
2024-04-26 04:16:13 +00:00
|
|
|
curl -LO https://docs.sheetjs.com/pres.numbers
|
2023-02-24 07:46:48 +00:00
|
|
|
```
|
|
|
|
|
|
|
|
|
|
5) Save the following test script to `SheetJSAlaSQL.js`:
|
|
|
|
|
|
|
|
|
|
```js title="SheetJSAlaSQL.js"
|
|
|
|
|
const { promise: alasql } = require("alasql");
|
|
|
|
|
|
|
|
|
|
(async() => {
|
|
|
|
|
/* read data from spreadsheet to JS */
|
|
|
|
|
const data = await alasql(`
|
|
|
|
|
SELECT \`Name\`, \`Index\`
|
|
|
|
|
FROM XLSX("pres.numbers", {autoExt:false})
|
|
|
|
|
WHERE \`Index\` < 45
|
|
|
|
|
`);
|
|
|
|
|
console.log(data);
|
|
|
|
|
|
|
|
|
|
/* write data from JS to spreadsheet */
|
2023-12-05 03:46:54 +00:00
|
|
|
data.push({ Name: "SheetJS Dev", Index: 47 });
|
2023-02-24 07:46:48 +00:00
|
|
|
await alasql(`SELECT * INTO XLSX("SheetJSAlaSQL1.xlsx") FROM ?`, [data]);
|
|
|
|
|
})();
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
6) Run the test script
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
node SheetJSAlaSQL.js
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
The output should display:
|
|
|
|
|
|
2023-05-07 13:58:36 +00:00
|
|
|
```js
|
2023-02-24 07:46:48 +00:00
|
|
|
[
|
|
|
|
|
{ Name: 'Bill Clinton', Index: 42 },
|
|
|
|
|
{ Name: 'GeorgeW Bush', Index: 43 },
|
|
|
|
|
{ Name: 'Barack Obama', Index: 44 }
|
|
|
|
|
]
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
The script should generate `SheetJSAlaSQL1.xlsx` with the additional row:
|
|
|
|
|
|
|
|
|
|
```csv
|
|
|
|
|
Name,Index
|
|
|
|
|
Bill Clinton,42
|
|
|
|
|
GeorgeW Bush,43
|
|
|
|
|
Barack Obama,44
|
2023-12-05 03:46:54 +00:00
|
|
|
SheetJS Dev,47
|
2023-02-24 07:46:48 +00:00
|
|
|
```
|
