first commit

Author: gitdagray

csv/ExampleTable.csv

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+id,description,entryDate,location,rate,isActive
+1,American Farms,2023-11-17 00:00:00.000,New York,0.05,1
+2,Beatles,2023-11-01 00:00:00.000,NULL,0.01,0
+3,True Licensing,2023-12-02 00:00:00.000,NULL,0.25,1
+4,1 100,2023-12-10 00:00:00.000,Chicago,0.5,1
+6,"Smith, John",2023-10-03 00:00:00.000,Dallas,0.35,1
+7,"Brown, Esq., John",2023-06-01 00:00:00.000,Finland,0.05,1
+8,Merry Merry Christmas,2023-01-01 00:00:00.000,NULL,0,1
+9,another entry,2023-03-24 00:00:00.000,NULL,1.05,0
+10,42,2023-04-01 00:00:00.000,London,0.2,1

index.js

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+const fs = require('node:fs/promises');
+
+async function writeSQL(statement) {
+    try {
+      await fs.writeFile(`sql/${process.argv[2]}.sql`, statement);
+    } catch (err) {
+      console.log(err);
+    }
+}
+
+async function readCSV(csvFileName = '') {
+  const fileAndTableName = process.argv[2] || csvFileName
+
+  try {
+    const data = await fs.readFile(`csv/${fileAndTableName}.csv`, { encoding: 'utf8' });
+    
+    const linesArray = data.split(/\r|\n/).filter(line => line)
+    const columnNames = linesArray.shift().split(",")
+    
+    let insertStart = `INSERT INTO ${fileAndTableName} (`
+    columnNames.forEach(name => insertStart += `${name}, `)
+    insertStart = insertStart.slice(0,-2) + ")\nVALUES\n" 
+
+    let values = ''
+    linesArray.forEach(line => {
+        const arr = line.split(/,(?=(?:(?:[^"]*"){2})*[^"]*$)/)
+        
+        if (arr.length > columnNames.length) {
+            console.log(arr)
+            throw new Error("Too Many Values in row")
+        }
+
+        const timestampRegex = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3}$/
+        // value.match(timestampRegex) || 
+        let valueLine = '\t('
+        arr.forEach(value => {
+            // NULL values
+            // Numbers, Strings accepted as numbers, and Booleans (0 or 1)
+            if (value === "NULL" || !isNaN(+value)) {
+                valueLine += `${value}, `
+            }
+            else {
+                // If a string is wrapped in quotes, it doesn't need more
+                if (value.at(0) === '"') valueLine += `${value}, `
+                else {
+                    // This wraps strings in quotes that need them
+                    // also wraps timestamps
+                    valueLine += `"${value}", `
+                }
+            }
+        })
+        valueLine = valueLine.slice(0,-2) + "),\n"
+        values += valueLine
+    })
+    values = values.slice(0,-2) + ";"
+
+    const sqlStatement = insertStart + values
+
+    // Write File 
+    writeSQL(sqlStatement)
+
+  } catch (err) {
+    console.log(err);
+  }
+}
+
+readCSV()
+
+console.log('Finished!')

package.json

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+{
+  "name": "csv-to-sql",
+  "version": "1.0.0",
+  "description": "input a csv file, output a sql insert statement",
+  "main": "index.js",
+  "scripts": {
+    "test": "node . filename"
+  },
+  "author": "",
+  "license": "ISC"
+}