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Enable hash partitioning of text arrays
hash_array_extended() needs to pass PG_GET_COLLATION() to the hash function of the element type. Otherwise, the hash function of a collation-aware data type such as text will error out, since the introduction of nondeterministic collation made hash functions require a collation, too. The consequence of this is that before this change, hash partitioning using an array over text in the partition key would not work. Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://www.postgresql.org/message-id/flat/32c1fdae-95c6-5dc6-058a-a90330a3b621%40enterprisedb.com
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@ -4071,7 +4071,7 @@ hash_array_extended(PG_FUNCTION_ARGS)
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typalign = typentry->typalign;
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InitFunctionCallInfoData(*locfcinfo, &typentry->hash_extended_proc_finfo, 2,
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InvalidOid, NULL, NULL);
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PG_GET_COLLATION(), NULL, NULL);
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/* Loop over source data */
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nitems = ArrayGetNItems(ndims, dims);
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