DATE_TRUNC Function not suppot DATE_TRUNC(<time_unit>, <datetime>)

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doris-website/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/sql-manual/sql-functions/scalar-functions/date-time-functions/date-trunc.md

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DATE_TRUNC(<time_unit>, <datetime>)

Doris 3.0.3 is not suppot DATE_TRUNC(<time_unit>, )

select date_trunc('month', OEE_DATE) from mcp.line_oee

SQL Error [1105] [HY000]: errCode = 2, detailMessage = the second parameter of date_trunc function must be a string constant: date_trunc('month', OEE_DATE)