my hive incremental not working!

The problem I’m having

I would like to use incremental on hive, but it does not work based on my configuration.

The context of why I’m trying to do this

I want to improve my sql, use ‘inset into’.

What I’ve already tried

I has use 'incremental_strategy=‘inert_overwrite’and incremental_strategy=‘append’’,but
the result is:
create table xxx.test0302_1
select * from xxx.test0302
Unable to establish connection to Hive server: Error while compiling statement: FAILED: SemanticException org.apache.hadoop.hive.ql.parse.SemanticException: Table already exists: xxx.test0302_1

Some example code or error messages

this is my jinja:
{{ config(materialized=‘incremental’, incremental_strategy=‘insert_overwrite’,unique_key=‘’) }}

select * from {{ ref(‘test0302’) }}

{% if is_incremental() %}
where event_time >= (select max(event_time) from misphq.test0302_1)

{% endif %}


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