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Commitc6a01d9

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Copy the INSERT query in postgres_fdw
When executing the INSERT with batching, we may need to rebuild thequery when the batch size changes, in which case we pfree the currentstring. We must not release the original string, stored in fdw_private,because that may be needed in EXPLAIN ANALYZE. So make copy of the SQL,but only for INSERT queries.Reported-by: Pavel StehuleDiscussion:https://postgr.es/m/CAFj8pRCL_Rjw-MCR6J7VX9OF7MR6PA5K8qUbrMvprW_e-aHkfQ%40mail.gmail.com
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‎contrib/postgres_fdw/postgres_fdw.c

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Original file line numberDiff line numberDiff line change
@@ -3903,7 +3903,10 @@ create_foreign_modify(EState *estate,
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/* Set up remote query information. */
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fmstate->query=query;
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if (operation==CMD_INSERT)
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{
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fmstate->query=pstrdup(fmstate->query);
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fmstate->orig_query=pstrdup(fmstate->query);
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}
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fmstate->target_attrs=target_attrs;
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fmstate->values_end=values_end;
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fmstate->has_returning=has_returning;

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