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can you give an example sql statement using B4X and DuckDB?

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In B4X (e.g., B4J) with the DuckDB JDBC driver, you use the standard B4X SQL library for database interactions.
Here is an example demonstrating connection, table creation, data insertion (using a batch operation), and selection:
Prerequisites
In your B4J project, you need to add the DuckDB JDBC driver to your project and add the following attribute to your Globals or StarterService module:
b4x
#AdditionalJar: duckdb_jdbc-x.x.x.jar ' Replace x.x.x with the actual version number
You also need a SQL object declared in your globals:
b4x
Private SQL As SQL
Example Code
An example demonstrating connecting to a DuckDB database, creating a table, inserting data using a batch operation, and selecting data can be found on b4x.com.

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1. Add the JDBC driver JAR: Download the DuckDB JDBC driver JAR file from the DuckDB installation page and place it in your project's AdditionalLibraries folder.
2. Add Project Attribute: Add the following line to your B4X project attributes (usually at the top of a module):
   b4x
   #AdditionalJar: duckdb_jdbc-<version>.jar ' Replace <version> with the actual version number (e.g., duckdb_jdbc-1.4.2.0.jar)
   ```
   

Private SQL As SQL
Private dbPath As String = File.DirApp & "/my_analytics.duckdb" ' Path for persistent database file

Sub ConnectAndInsertExample
    Try
        ' Initialize connection using the DuckDB JDBC driver and connection string
        SQL.Initialize("org.duckdb.DuckDBDriver", "jdbc:duckdb:" & dbPath)
        Log("Database connected successfully")

        ' Create table if it doesn't exist
        SQL.ExecNonQuery("CREATE TABLE IF NOT EXISTS data (id INTEGER, value VARCHAR)")

        ' Insert a single record using parameterized query
        SQL.ExecNonQuery2("INSERT INTO data VALUES (?, ?)", Array As Object(1, "test value"))

        ' For multiple inserts, use a batch operation
        SQL.AddNonQueryToBatch("INSERT INTO data VALUES (?, ?)", Array As Object(2, "hello batch"))
        SQL.ExecNonQueryBatch("SQL")

    Catch
        Log(LastException.Message)
    End Try
End Sub

' Event handler for batch operations
Sub SQL_NonQueryComplete (Success As Boolean)
    If Success Then
        Log("SQL non query batch operation completed successfully.")
    Else
        Log("SQL non query batch operation failed.")
    End If
End Sub

• Connection String: Use jdbc:duckdb: followed by the file path for a persistent database, or just jdbc:duckdb: for an in-memory database.
• Parameterized Queries: Use ? placeholders for values to prevent SQL injection and improve performance.
• Batch Inserts: Use AddNonQueryToBatch and ExecNonQueryBatch for efficient bulk inserts.