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    Interface AliasedSelectQueryBuilder<O, A>

    A type that holds an expression and an alias for it.

    AliasedExpression<T, A> can be used in places where, in addition to the value type T, you also need a name A for that value. For example anything you can pass into the select method needs to implement an AliasedExpression<T, A>. A becomes the name of the selected expression in the result and T becomes its type.

    import {
    AliasNode,
    type AliasedExpression,
    type Expression,
    IdentifierNode
    } from 'kysely'

    class SomeAliasedExpression<T, A extends string> implements AliasedExpression<T, A> {
    #expression: Expression<T>
    #alias: A

    constructor(expression: Expression<T>, alias: A) {
    this.#expression = expression
    this.#alias = alias
    }

    get expression(): Expression<T> {
    return this.#expression
    }

    get alias(): A {
    return this.#alias
    }

    toOperationNode(): AliasNode {
    return AliasNode.create(
    this.#expression.toOperationNode(),
    IdentifierNode.create(this.#alias)
    )
    }
    }
    interface AliasedSelectQueryBuilder<O = undefined, A extends string = never> {
        get alias(): A | Expression<unknown>;
        get expression(): Expression<T>;
        get isAliasedSelectQueryBuilder(): true;
        toOperationNode(): AliasNode;
    }

    Type Parameters

    • O = undefined
    • A extends string = never

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