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    <title>topic Bug in CopyData appending to partitioned table in Pipelines</title>
    <link>https://community.fabric.microsoft.com/t5/Pipelines/Bug-in-CopyData-appending-to-partitioned-table/m-p/3559158#M1252</link>
    <description>&lt;P&gt;&lt;EM&gt;&amp;nbsp;&lt;/EM&gt;I can create a lakehouse partitioned table by selecting Overwrite in the destination options and choosing a column for the partition (simplified for this post):&lt;/P&gt;&lt;P&gt;&lt;img /&gt;&lt;/P&gt;&lt;P&gt;Result:&lt;/P&gt;&lt;P&gt;&lt;img /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The behaviour I expected for subsequent runs was one of the following:&lt;/P&gt;&lt;OL&gt;&lt;LI&gt;Keep as Overwrite - a partition with the same ID has data overwritten, but new partitions are created for new IDs,&amp;nbsp;OR&lt;/LI&gt;&lt;LI&gt;Change to Append - a partition with the same ID has data appended, but new partitions are created for new IDs.&lt;/LI&gt;&lt;/OL&gt;&lt;P&gt;Neither of these happens - 1) just overwrites everything and 2) gives an error - so how are you supposed to update a partitioned table? This is the error for Append:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;"ErrorCode=TableActionNotSupportAppendToPartitionedTable,&lt;/P&gt;&lt;P&gt;'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,&lt;/P&gt;&lt;P&gt;Message=Table action 'Append' is not supported for writing into existing partitioned table."&lt;/P&gt;</description>
    <pubDate>Wed, 29 Nov 2023 15:16:47 GMT</pubDate>
    <dc:creator>coolie</dc:creator>
    <dc:date>2023-11-29T15:16:47Z</dc:date>
    <item>
      <title>Bug in CopyData appending to partitioned table</title>
      <link>https://community.fabric.microsoft.com/t5/Pipelines/Bug-in-CopyData-appending-to-partitioned-table/m-p/3559158#M1252</link>
      <description>&lt;P&gt;&lt;EM&gt;&amp;nbsp;&lt;/EM&gt;I can create a lakehouse partitioned table by selecting Overwrite in the destination options and choosing a column for the partition (simplified for this post):&lt;/P&gt;&lt;P&gt;&lt;img /&gt;&lt;/P&gt;&lt;P&gt;Result:&lt;/P&gt;&lt;P&gt;&lt;img /&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The behaviour I expected for subsequent runs was one of the following:&lt;/P&gt;&lt;OL&gt;&lt;LI&gt;Keep as Overwrite - a partition with the same ID has data overwritten, but new partitions are created for new IDs,&amp;nbsp;OR&lt;/LI&gt;&lt;LI&gt;Change to Append - a partition with the same ID has data appended, but new partitions are created for new IDs.&lt;/LI&gt;&lt;/OL&gt;&lt;P&gt;Neither of these happens - 1) just overwrites everything and 2) gives an error - so how are you supposed to update a partitioned table? This is the error for Append:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;"ErrorCode=TableActionNotSupportAppendToPartitionedTable,&lt;/P&gt;&lt;P&gt;'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,&lt;/P&gt;&lt;P&gt;Message=Table action 'Append' is not supported for writing into existing partitioned table."&lt;/P&gt;</description>
      <pubDate>Wed, 29 Nov 2023 15:16:47 GMT</pubDate>
      <guid>https://community.fabric.microsoft.com/t5/Pipelines/Bug-in-CopyData-appending-to-partitioned-table/m-p/3559158#M1252</guid>
      <dc:creator>coolie</dc:creator>
      <dc:date>2023-11-29T15:16:47Z</dc:date>
    </item>
    <item>
      <title>Re: Bug in CopyData appending to partitioned table</title>
      <link>https://community.fabric.microsoft.com/t5/Pipelines/Bug-in-CopyData-appending-to-partitioned-table/m-p/3572238#M1342</link>
      <description>&lt;P&gt;Hi&amp;nbsp;&lt;a href="javascript:void(0)" data-lia-user-mentions="" data-lia-user-uid="649172" data-lia-user-login="coolie" class="lia-mention lia-mention-user"&gt;coolie&lt;/a&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN&gt;This is a duplicate thread of the similar one available at the link :&amp;nbsp;&lt;/SPAN&gt;&lt;A href="https://community.fabric.microsoft.com/t5/Data-Pipelines/Create-additional-column-for-partition-id/td-p/3544816" target="_blank" rel="noopener"&gt;Duplicate Link&lt;/A&gt;&lt;SPAN&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Hence I am closing this thread.&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN&gt;Thanks.&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Thu, 07 Dec 2023 10:37:51 GMT</pubDate>
      <guid>https://community.fabric.microsoft.com/t5/Pipelines/Bug-in-CopyData-appending-to-partitioned-table/m-p/3572238#M1342</guid>
      <dc:creator>v-cboorla-msft</dc:creator>
      <dc:date>2023-12-07T10:37:51Z</dc:date>
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