@uwdata/mosaic-sql/dist/src/ast/with.js

SQL query construction and analysis.

import { WITH_CLAUSE } from '../constants.js';
import { SQLNode } from './node.js';
export class WithClauseNode extends SQLNode {
    /** The common table expression (CTE) name. */
    name;
    /** The common table expression (CTE) query. */
    query;
    /** The common table expression (CTE) materialization flag. */
    materialized;
    /**
     * Instantiate a with clause node for a common table expression (CTE).
     * @param name The common table expression (CTE) name.
     * @param query The common table expression (CTE) query.
     * @param materialized The common table expression (CTE)
     *  materialization flag. If `true`, forces materialization of the CTE.
     *  If `false`, materialization is not performed. Otherwise (for example, if
     *  `undefined` or `null`), materialization is decided by the database.
     */
    constructor(name, query, materialized = null) {
        super(WITH_CLAUSE);
        this.name = name;
        this.query = query;
        this.materialized = materialized;
    }
    /**
     * Generate a SQL query string for this node.
     */
    toString() {
        const flag = this.materialized;
        const mat = flag === true ? ' MATERIALIZED'
            : flag === false ? ' NOT MATERIALIZED'
                : '';
        return `"${this.name}" AS${mat} (${this.query})`;
    }
}
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