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Tue, 05 May 2026 01:35:22 +0000 Content-Type: multipart/mixed; boundary="===============5771378553508510951==" MIME-Version: 1.0 From: Richard Guo To: pgsql-committers@lists.postgresql.org Subject: pgsql: Consider collation when proving subquery uniqueness X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Tue, 05 May 2026 01:35:22 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============5771378553508510951== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Q29uc2lkZXIgY29sbGF0aW9uIHdoZW4gcHJvdmluZyBzdWJxdWVyeSB1bmlxdWVuZXNzCgpyZWxf aXNfZGlzdGluY3RfZm9yKCkncyBSVEVfU1VCUVVFUlkgYnJhbmNoIHBhc3NlZCBvbmx5IHRoZSBl cXVhbGl0eQpvcGVyYXRvciBmcm9tIGVhY2ggam9pbiBjbGF1c2UgdG8gcXVlcnlfaXNfZGlzdGlu Y3RfZm9yKCksIGRpc2NhcmRpbmcKdGhlIG9wZXJhdG9yJ3MgaW5wdXQgY29sbGF0aW9uLiAgcXVl cnlfaXNfZGlzdGluY3RfZm9yKCkgdGhlbiB2ZXJpZmllZApvcGZhbWlseSBjb21wYXRpYmlsaXR5 IGJ1dCBuZXZlciBjaGVja2VkIGNvbGxhdGlvbnMsIHNvIGEgRElTVElOQ1QgLwpHUk9VUCBCWSAv IHNldC1vcCBvcGVyYXRpbmcgdW5kZXIgb25lIGNvbGxhdGlvbiB3YXMgdHJ1c3RlZCB0byBwcm92 ZQp1bmlxdWVuZXNzIGZvciBhIGNvbXBhcmlzb24gcGVyZm9ybWVkIHVuZGVyIGFuIHVucmVsYXRl ZCBjb2xsYXRpb24uCkFzIHdpdGggdGhlIHJlY2VudCBmaXggaW4gcmVsYXRpb25faGFzX3VuaXF1 ZV9pbmRleF9mb3IoKSwgdGhpcyBpcwp1bnNvdW5kIGZvciBub25kZXRlcm1pbmlzdGljIGNvbGxh dGlvbnMgYW5kIHlpZWxkcyB3cm9uZyBxdWVyeSByZXN1bHRzCmluIGFueSBvcHRpbWl6YXRpb24g dGhhdCBjb25zdW1lcyB0aGUgcHJvb2YuCgpGaXggYnkgY2FycnlpbmcgZWFjaCBjbGF1c2UncyBv cGVyYXRvciBpbnB1dCBjb2xsYXRpb24gaW50bwpxdWVyeV9pc19kaXN0aW5jdF9mb3IoKSBhbmQg dmFsaWRhdGluZyBpdCBhdCBldmVyeSBjaGVjay1zaXRlIGFnYWluc3QKdGhlIHN1YnF1ZXJ5IHRh cmdldCBleHByZXNzaW9uJ3MgY29sbGF0aW9uLgoKQmFjay1wYXRjaCB0byBhbGwgc3VwcG9ydGVk IGJyYW5jaGVzLiAgcXVlcnlfaXNfZGlzdGluY3RfZm9yKCkgaXMKZGVjbGFyZWQgaW4gYW4gaW5z dGFsbGVkIGhlYWRlciwgc28gb24gc3RhYmxlIGJyYW5jaGVzIHRoZSBleGlzdGluZwp0d28tbGlz dCBzaWduYXR1cmUgaXMgcmV0YWluZWQgYXMgYSB0aGluIHdyYXBwZXIgdGhhdCBmb3J3YXJkcyB0 byBhCm5ldyBjb2xsYXRpb24tYXdhcmUgZW50cnkgcG9pbnQ7IGV4dGVybmFsIGNhbGxlcnMgY29u dGludWUgdG8gcmVjZWl2ZQp0aGUgaGlzdG9yaWNhbCBjb2xsYXRpb24tYmxpbmQgYW5zd2VyLgoK QXV0aG9yOiBSaWNoYXJkIEd1byA8Z3VvZmVuZ2xpbnV4QGdtYWlsLmNvbT4KUmV2aWV3ZWQtYnk6 IFRvbSBMYW5lIDx0Z2xAc3NzLnBnaC5wYS51cz4KRGlzY3Vzc2lvbjogaHR0cHM6Ly9wb3N0Z3Iu ZXMvbS9DQU1iV3M0X1hVVVNUeXpDYVJqVWVlYWhXTnFpPThaT0E1UTRjb2k4elVWRURTQmtNNkFA bWFpbC5nbWFpbC5jb20KQmFja3BhdGNoLXRocm91Z2g6IDE0CgpCcmFuY2gKLS0tLS0tClJFTF8x Nl9TVEFCTEUKCkRldGFpbHMKLS0tLS0tLQpodHRwczovL2dpdC5wb3N0Z3Jlc3FsLm9yZy9wZy9j b21taXRkaWZmLzVhMjRjZWYwODJhMDk1YWFlYWRiMGIxNjcyZDhjMWQ5MTIzMzUyNjEKCk1vZGlm aWVkIEZpbGVzCi0tLS0tLS0tLS0tLS0tCnNyYy9iYWNrZW5kL29wdGltaXplci9wbGFuL2FuYWx5 emVqb2lucy5jICAgICAgfCAxODIgKysrKysrKysrKysrKysrKystLS0tLS0tLQpzcmMvdGVzdC9y ZWdyZXNzL2V4cGVjdGVkL2NvbGxhdGUuaWN1LnV0Zjgub3V0IHwgMTgxICsrKysrKysrKysrKysr KysrKysrKysrKwpzcmMvdGVzdC9yZWdyZXNzL3NxbC9jb2xsYXRlLmljdS51dGY4LnNxbCAgICAg IHwgIDU4ICsrKysrKysrCnNyYy90b29scy9wZ2luZGVudC90eXBlZGVmcy5saXN0ICAgICAgICAg ICAgICAgfCAgIDEgKwo0IGZpbGVzIGNoYW5nZWQsIDM2NiBpbnNlcnRpb25zKCspLCA1NiBkZWxl dGlvbnMoLSkKCg== --===============5771378553508510951==--