@sequeljs/ast/dist/es/visitors/MySQL.js

A SQL AST manager for JavaScript

import Limit from '../nodes/Limit';
import SQLLiteral from '../nodes/SQLLiteral';
import Union from '../nodes/Union';
import ToSQL from './ToSQL';
export default class MySQL extends ToSQL {
    visitBin(thing, col) {
        let collector = col;
        collector.append('BINARY ');
        collector = this.visit(thing.expr, collector);
        return collector;
    }
    visitConcat(thing, col) {
        let collector = col;
        collector.append(' CONCAT(');
        collector = this.visit(thing.left, collector);
        collector.append(', ');
        collector = this.visit(thing.right, collector);
        collector.append(') ');
        return collector;
    }
    visitIsDistinctFrom(thing, col) {
        let collector = col;
        collector.append('NOT ');
        collector = this.visitIsNotDistinctFrom(thing, collector);
        return collector;
    }
    visitIsNotDistinctFrom(thing, col) {
        let collector = col;
        collector = this.visit(thing.left, collector);
        collector.append(' <=> ');
        collector = this.visit(thing.right, collector);
        return collector;
    }
    visitSelectCore(thing, col) {
        if (!thing.from) {
            // eslint-disable-next-line no-param-reassign
            thing.from = new SQLLiteral('DUAL');
        }
        return super.visitSelectCore(thing, col);
    }
    visitSelectStatement(thing, col) {
        if (thing.offset && !thing.limit) {
            /**
             * https://dev.mysql.com/doc/refman/8.0/en/select.html
             * To retrieve all rows from a certain offset up to the end of the result
             * set, you can use some large number for the second parameter.
             */
            // eslint-disable-next-line no-param-reassign
            thing.limit = new Limit(new SQLLiteral('18446744073709551615'));
        }
        return super.visitSelectStatement(thing, col);
    }
    visitUnion(thing, col, suppressParens = false) {
        let collector = col;
        if (!suppressParens) {
            collector.append('( ');
        }
        if (thing.left instanceof Union) {
            collector = this.visitUnion(thing.left, collector, true);
        }
        else {
            collector = this.visit(thing.left, collector);
        }
        collector.append(' UNION ');
        if (thing.right instanceof Union) {
            collector = this.visitUnion(thing.right, collector, true);
        }
        else {
            collector = this.visit(thing.right, collector);
        }
        if (!suppressParens) {
            collector.append(' )');
        }
        return collector;
    }
    visitUnqualifiedColumn(thing, col) {
        let collector = col;
        collector = this.visit(thing.expr, collector);
        return collector;
    }
    visitUpdateStatement(thing, col) {
        let collector = col;
        collector.append('UPDATE ');
        collector = this.visit(thing.relation, collector);
        if (thing.values.length > 0) {
            collector.append(' SET ');
            collector = this.injectJoin(thing.values, collector, ', ');
        }
        if (thing.wheres.length > 0) {
            collector.append(' WHERE ');
            collector = this.injectJoin(thing.wheres, collector, ' AND ');
        }
        if (thing.orders.length > 0) {
            collector.append(' ORDER BY ');
            collector = this.injectJoin(thing.orders, collector, ', ');
        }
        collector = this.maybeVisit(thing.limit, collector);
        return collector;
    }
}
//# sourceMappingURL=MySQL.js.map