[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-05 (世界標準時間)。"],[],[],null,["# LEFT_TEXT\n\nReturns a number of characters from the beginning of a specified string.\n\nSample usage\n------------\n\n`LEFT_TEXT(Campaign, 6)`\n\nSyntax\n------\n\n`LEFT_TEXT( `\u003cvar translate=\"no\"\u003eX\u003c/var\u003e`, `\u003cvar translate=\"no\"\u003elength\u003c/var\u003e` )`\n\n### Parameters\n\n- \u003cvar translate=\"no\"\u003eX\u003c/var\u003e - a field or expression of any type.\n- \u003cvar translate=\"no\"\u003elength\u003c/var\u003e - The number of characters to include in the substring. \u003cvar translate=\"no\"\u003elength\u003c/var\u003e can be a field, expression, or literal value.\n\nExamples\n--------\n\nRelated resources\n-----------------\n\n- [Calculated fields](/looker/docs/studio/about-calculated-fields)\n- [Looker Studio function list](/looker/docs/studio/function-list)"]]
