@sqb/builder/esm/sql-objects/operators/op-exists.js

Extensible multi-dialect SQL query builder written with TypeScript

import { OperatorType } from '../../enums.js';
import { isSelectQuery } from '../../typeguards.js';
import { CompOperator } from './comp-operator.js';
export class OpExists extends CompOperator {
    _operatorType = OperatorType.exists;
    _symbol = 'exists';
    constructor(query) {
        super(query);
        if (!(typeof query === 'object' && isSelectQuery(query))) {
            throw new TypeError('You must provide a SelectQuery in `exists()`');
        }
    }
    _serialize(ctx) {
        const left = this.__serializeItem(ctx, this._left);
        if (this._isArray)
            left.isArray = true;
        const o = {
            operatorType: this._operatorType,
            symbol: this._symbol,
            left,
        };
        return this.__serialize(ctx, o);
    }
    __defaultSerialize(ctx, o) {
        return o.left.expression ? o.symbol + ' ' + o.left.expression : '';
    }
}