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vduckdb 0.6.5

A V wrapper for duckdb. This library is now in beta and should be safe to use in most scenarios. Should work on Linux, Windows and MacOS with V version 0.4.x

DuckDB Libraries installation

• Download latest DuckDB libraries (libduckdb*.zip) for your OS from https://github.com/duckdb/duckdb/releases to ./thirdparty in your current directory, or to a directory of your choice if you will use LIBDUCKDB_DIR env variable (see Usage)
• Make sure libraries are named libduck* (i.e. libduckdb.so, libduckdb.dll, libduckdb.dylib). Check the update-libs.sh script as a guideline.

vduckdb installation

v install https://github.com/rodabt/vduckdb

Main usage

// file.v
import vduckdb

fn main() {
    
    mut db := vduckdb.DuckDB{}
    println('vduckdb version: ${vduckdb.version()}')
    println('duckdb version: ${vduckdb.duckdb_library_version()}')

    _ := db.open(':memory:')!

    mut q := 'select "Index", "First Name", "Last Name", "Email", "Date of birth" from \'people-100.csv\' limit 10'
    println('\nQuery: ${q}')

    _ := db.query(q)!

    println('\nColumns and types: ${db.columns}')
    
    println('\n Results as table to terminal:')
    println(db.print_table(max_rows: 10, mode: 'box'))

    q = 'select "First Name", "Sex" from \'people-100.csv\' limit 5'
    println('\nData from \'${q}\' as []map[string]string:')
    _ := db.query(q)!
    out := db.get_array_as_string()
    println(out)

    first_row := db.get_first_row()
    println(first_row)

    println('\nManaging errors...')
    q = "select sdkf fff f"
    db.query(q) or {
      eprintln(err.msg())
    }

    defer {
      db.close()
    }

}

# If you have `thirdparty` directory and its contents in the same directory as `file.v`
v run file.v

# Otherwise
LIBDUCKDB_DIR=/my/custom/libduckdb/directory v run file.v

Documentation

Run v doc vduckdb or make docs to generate static HTML documentation in docs folder

Roadmap

• Define as module
• Added tests
• Write base documentation
• Download and install required dependencies
• Map all relevant definitions from duckdb.h header file to their V counterparts
• Create convenience functions and data wrappers
• Add website and tutorials
• Build integration with V ORM

Contributing

Pull requests are welcome