34 lines
1.1 KiB
TypeScript
34 lines
1.1 KiB
TypeScript
/* Load SQLite3 connector library */
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import { DB } from "https://deno.land/x/sqlite/mod.ts";
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/* Load SheetJS library */
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// @deno-types="https://cdn.sheetjs.com/xlsx-latest/package/types/index.d.ts"
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import * as XLSX from "https://cdn.sheetjs.com/xlsx-latest/package/xlsx.mjs";
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/* Initialize database */
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var db = new DB("chinook.db");
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/* Create new workbook */
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var wb = XLSX.utils.book_new();
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/* Get list of table names */
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var sql = db.prepareQuery("SELECT name FROM sqlite_master WHERE type='table'");
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var result = sql.all();
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/* Loop across each name */
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result.forEach(function(row) {
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/* Get first 100K rows */
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var query = db.prepareQuery("SELECT * FROM '" + row[0] + "' LIMIT 100000")
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var aoa = query.all();
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if(aoa.length > 0) {
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/* Create array of arrays */
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var data = [query.columns().map(x => x.name)].concat(aoa);
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/* Create Worksheet from the aoa */
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var ws = XLSX.utils.aoa_to_sheet(data, {dense: true});
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/* Add to Workbook */
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XLSX.utils.book_append_sheet(wb, ws, row[0]);
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}
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});
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/* Write File */
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XLSX.writeFile(wb, "SheetJSQLiteDeno.xlsx");
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