excel vba sql

Excel VBA SQL refers to the use of SQL (Structured Query Language) within Microsoft Excel's Visual Basic for Applications (VBA) programming language. This allows Excel users to write VBA code that interacts with databases using SQL commands.

For example, a VBA program could use SQL to:

- Retrieve data from a database and display it in an Excel worksheet
- Insert new data into a database based on user input in an Excel form
- Update existing data in a database based on changes made in an Excel worksheet
- Delete data from a database based on user input in an Excel form

To use SQL in Excel VBA, you need to establish a connection to the database using an ADO (ActiveX Data Objects) connection. Once the connection is established, you can use SQL commands to query, update, and manipulate the data in the database.

Here's an example of VBA code that uses SQL to retrieve data from a Microsoft Access database:

Sub RetrieveData()
    Dim cn As Object
    Dim rs As Object
    Dim sql As String
    
    Set cn = CreateObject("ADODB.Connection")
    cn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\MyUser\Documents\mydatabase.accdb;"
    cn.Open
    
    sql = "SELECT * FROM mytable"
    
    Set rs = cn.Execute(sql)
    Range("A1").CopyFromRecordset rs
    
    rs.Close
    cn.Close
End Sub

This code creates an ADO connection to a Microsoft Access database and executes an SQL query to retrieve all the data from a table named "mytable". The retrieved data is then copied to the Excel worksheet starting at cell A1. Finally, the recordset and connection objects are closed to release any resources used by the program.