vibesql-executor 0.2.0

Query execution engine for vibesql SQL database
Documentation 
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//! Basic SELECT projection tests (no WHERE, no aggregates, no JOINs)
//!
//! Tests for fundamental SELECT projection functionality including wildcards and column selection.

use super::super::*;

/// Test SELECT * from a table
#[test]
fn test_select_star() {
    let mut db = vibesql_storage::Database::new();
    let schema = vibesql_catalog::TableSchema::new(
        "users".to_string(),
        vec![
            vibesql_catalog::ColumnSchema::new(
                "id".to_string(),
                vibesql_types::DataType::Integer,
                false,
            ),
            vibesql_catalog::ColumnSchema::new(
                "name".to_string(),
                vibesql_types::DataType::Varchar { max_length: Some(100) },
                true,
            ),
        ],
    );
    db.create_table(schema).unwrap();
    db.insert_row(
        "users",
        vibesql_storage::Row::new(vec![
            vibesql_types::SqlValue::Integer(1),
            vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Alice")),
        ]),
    )
    .unwrap();
    db.insert_row(
        "users",
        vibesql_storage::Row::new(vec![
            vibesql_types::SqlValue::Integer(2),
            vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Bob")),
        ]),
    )
    .unwrap();

    let executor = SelectExecutor::new(&db);
    let stmt = vibesql_ast::SelectStmt {
        into_table: None,
        into_variables: None,
        with_clause: None,
        set_operation: None,
        values: None,
        distinct: false,
        select_list: vec![vibesql_ast::SelectItem::Wildcard { alias: None }],
        from: Some(vibesql_ast::FromClause::Table {
            index_hint: None,
            quoted: false,
            name: "users".to_string(),
            alias: None,
            column_aliases: None,
        }),
        where_clause: None,
        group_by: None,
        having: None,
        window_definitions: None,
        order_by: None,
        limit: None,
        offset: None,
    };

    let result = executor.execute(&stmt).unwrap();
    assert_eq!(result.len(), 2);
    assert_eq!(result[0].values[0], vibesql_types::SqlValue::Integer(1));
    assert_eq!(
        result[0].values[1],
        vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Alice"))
    );
    assert_eq!(result[1].values[0], vibesql_types::SqlValue::Integer(2));
    assert_eq!(result[1].values[1], vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Bob")));
}

/// Test SELECT specific columns from a table
#[test]
fn test_select_specific_columns() {
    let mut db = vibesql_storage::Database::new();
    let schema = vibesql_catalog::TableSchema::new(
        "users".to_string(),
        vec![
            vibesql_catalog::ColumnSchema::new(
                "id".to_string(),
                vibesql_types::DataType::Integer,
                false,
            ),
            vibesql_catalog::ColumnSchema::new(
                "name".to_string(),
                vibesql_types::DataType::Varchar { max_length: Some(100) },
                true,
            ),
            vibesql_catalog::ColumnSchema::new(
                "age".to_string(),
                vibesql_types::DataType::Integer,
                false,
            ),
        ],
    );
    db.create_table(schema).unwrap();
    db.insert_row(
        "users",
        vibesql_storage::Row::new(vec![
            vibesql_types::SqlValue::Integer(1),
            vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Alice")),
            vibesql_types::SqlValue::Integer(25),
        ]),
    )
    .unwrap();

    let executor = SelectExecutor::new(&db);
    let stmt = vibesql_ast::SelectStmt {
        into_table: None,
        into_variables: None,
        with_clause: None,
        set_operation: None,
        values: None,
        distinct: false,
        select_list: vec![
            vibesql_ast::SelectItem::Expression {
                expr: vibesql_ast::Expression::ColumnRef(vibesql_ast::ColumnIdentifier::simple(
                    "name", false,
                )),
                alias: None,
                source_text: None,
            },
            vibesql_ast::SelectItem::Expression {
                expr: vibesql_ast::Expression::ColumnRef(vibesql_ast::ColumnIdentifier::simple(
                    "age", false,
                )),
                alias: None,
                source_text: None,
            },
        ],
        from: Some(vibesql_ast::FromClause::Table {
            index_hint: None,
            quoted: false,
            name: "users".to_string(),
            alias: None,
            column_aliases: None,
        }),
        where_clause: None,
        group_by: None,
        having: None,
        window_definitions: None,
        order_by: None,
        limit: None,
        offset: None,
    };

    let result = executor.execute(&stmt).unwrap();
    assert_eq!(result.len(), 1);
    assert_eq!(result[0].values.len(), 2);
    assert_eq!(
        result[0].values[0],
        vibesql_types::SqlValue::Varchar(arcstr::ArcStr::from("Alice"))
    );
    assert_eq!(result[0].values[1], vibesql_types::SqlValue::Integer(25));
}