@sqb/builder/esm/query/union-query.js

Extensible multi-dialect SQL query builder written with TypeScript

import { SerializationType } from '../enums.js';
import { Query } from './query.js';
export class UnionQuery extends Query {
    _queries;
    _unionType;
    constructor(queries, unionType) {
        super();
        this._queries = queries;
        this._unionType = unionType;
    }
    get _type() {
        return SerializationType.UNION_QUERY;
    }
    /**
     * Performs serialization
     */
    _serialize(ctx) {
        const queries = this._queries.map(q => q._serialize(ctx));
        const q = {
            queries,
            unionType: this._unionType,
        };
        return ctx.serialize(this._type, q, () => this.__defaultSerialize(ctx, q));
    }
    __defaultSerialize(ctx, o) {
        return o.queries.join(o.unionType === 'all' ? '\nUNION ALL\n' : '\nUNION\n');
    }
}