@sqb/builder/esm/sql-objects/coalesce-statement.js

Extensible multi-dialect SQL query builder written with TypeScript

import { SerializationType } from '../enums.js';
import { Serializable } from '../serializable.js';
export class CoalesceStatement extends Serializable {
    constructor(...expressions) {
        super();
        this._expressions = expressions;
    }
    get _type() {
        return SerializationType.COALESCE_STATEMENT;
    }
    /**
     * Sets alias to case expression.
     */
    as(alias) {
        this._alias = alias;
        return this;
    }
    /**
     * Performs serialization
     *
     * @param {Object} ctx
     * @return {string}
     * @override
     */
    _serialize(ctx) {
        if (!this._expressions.length)
            return '';
        const q = {
            expressions: [],
        };
        for (const x of this._expressions) {
            q.expressions.push(ctx.anyToSQL(x));
        }
        return ctx.serialize(this._type, q, () => this.__defaultSerialize(ctx, q));
    }
    __defaultSerialize(ctx, o) {
        return ('coalesce(' +
            o.expressions.join(', ') +
            ')' +
            (this._alias ? ' ' + this._alias : ''));
    }
}