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

Extensible multi-dialect SQL query builder written with TypeScript

import { SerializationType } from '../enums.js';
import { printArray } from '../helpers.js';
import { ReturningColumn } from '../sql-objects/returning-column.js';
import { Query } from './query.js';
export class ReturningQuery extends Query {
    /**
     *
     */
    returning(...columns) {
        if (!columns)
            return this;
        // noinspection JSMismatchedCollectionQueryUpdate
        this._returningColumns = columns.length
            ? columns.reduce((a, v) => {
                if (v)
                    a.push(new ReturningColumn(v));
                return a;
            }, [])
            : undefined;
        return this;
    }
    /**
     *
     */
    __serializeReturning(ctx) {
        if (!(this._returningColumns && this._returningColumns.length))
            return '';
        const arr = [];
        ctx.returningFields = [];
        for (const t of this._returningColumns) {
            const s = t._serialize(ctx);
            /* istanbul ignore else */
            if (s)
                arr.push(s);
        }
        return ctx.serialize(SerializationType.RETURNING_BLOCK, arr, () => {
            const s = printArray(arr);
            return s ? 'returning ' + s : '';
        });
    }
}