@qrvey/formula-lang/dist/module/functions/length.js

QFormula support for qrvey projects

import { AST_PRIMITIVES } from '../constants';
import { isStringParam } from '../utils';
/**
 * `LENGTH` Returns the number characters of a string.
 */
export const LENGTH = {
    identifier: 'LENGTH',
    parameters: [
        {
            identifier: 'STRING',
            optional: false,
            expectedPrimitive: AST_PRIMITIVES.STRING,
            validator: [isStringParam],
        },
    ],
    transpiler: {
        elasticsearch,
        snowflake,
        redshift,
        postgresql,
    },
    primitiveResult: AST_PRIMITIVES.NUMBER,
};
function elasticsearch(current) {
    return `LENGTH(${current})`;
}
function SQL(current) {
    return `(CASE
        WHEN  ${current} IS NULL THEN 0
        ELSE LENGTH(${current})
    END)`;
}
function snowflake(current) {
    return SQL(current);
}
function redshift(current) {
    return SQL(current);
}
function postgresql(current) {
    return SQL(current);
}
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