rhombic/lib/utils/removeUnusedOrderItems.js

SQL parsing, lineage extraction and manipulation

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.removeUnusedOrderItems = void 0;
const ProjectionItemsVisitor_1 = require("../visitors/ProjectionItemsVisitor");
const replaceText_1 = require("./replaceText");
const removeUnusedOrderItems = (parsedSql, orderToRemove) => {
    const visitor = new ProjectionItemsVisitor_1.ProjectionItemsVisitor();
    visitor.visit(parsedSql.cst);
    let orderStatement = visitor.sort
        .filter(i => i.expression !== orderToRemove)
        .map(i => `${i.expression}${i.order ? " " + i.order.toUpperCase() : ""}${i.nullsOrder ? `NULLS ${i.nullsOrder.toUpperCase()}` : ""}`)
        .join(", ");
    if (orderStatement) {
        orderStatement = `ORDER BY ${orderStatement}`;
    }
    if (visitor.sortRange) {
        return replaceText_1.replaceText(parsedSql.toString(), orderStatement, visitor.sortRange);
    }
    else {
        return parsedSql.toString();
    }
};
exports.removeUnusedOrderItems = removeUnusedOrderItems;
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