Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjbT-00ATSl-Ia for pgsql-committers@arkaria.postgresql.org; Mon, 09 Dec 2024 19:39:35 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tKjbR-00B2Ss-2R for pgsql-committers@arkaria.postgresql.org; Mon, 09 Dec 2024 19:39:34 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjan-00B0UK-9w for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:54 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjai-001wMA-N7 for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:53 +0000 Received: from gemulon.postgresql.org ([2001:4800:3e1:1::198]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tKjah-00653W-7R for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:47 +0000 Received: from localhost ([127.0.0.1] helo=gemulon.postgresql.org) by gemulon.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tKjaf-001umX-NZ for pgsql-committers@lists.postgresql.org; Mon, 09 Dec 2024 19:38:46 +0000 Content-Type: multipart/mixed; boundary="===============1035821583782047335==" MIME-Version: 1.0 From: Tom Lane To: pgsql-committers@lists.postgresql.org Subject: pgsql: Simplify executor's determination of whether to use parallelism. X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Mon, 09 Dec 2024 19:38:46 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============1035821583782047335== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 U2ltcGxpZnkgZXhlY3V0b3IncyBkZXRlcm1pbmF0aW9uIG9mIHdoZXRoZXIgdG8gdXNlIHBhcmFs bGVsaXNtLgoKT3VyIHBhcmFsbGVsLW1vZGUgY29kZSBvbmx5IHdvcmtzIHdoZW4gd2UgYXJlIGV4 ZWN1dGluZyBhIHF1ZXJ5CmluIGZ1bGwsIHNvIEV4ZWN1dGVQbGFuIG11c3QgZGlzYWJsZSBwYXJh bGxlbCBtb2RlIHdoZW4gaXQgaXMKYXNrZWQgdG8gZG8gcGFydGlhbCBleGVjdXRpb24uICBUaGUg cHJldmlvdXMgbG9naWMgZm9yIHRoaXMKaW52b2x2ZWQgcGFzc2luZyBkb3duIGEgZmxhZyAodmFy aW91c2x5IG5hbWVkIGV4ZWN1dGVfb25jZSBvcgpydW5fb25jZSkgZnJvbSBjYWxsZXJzIG9mIEV4 ZWN1dG9yUnVuIG9yIFBvcnRhbFJ1bi4gIFRoaXMgaXMKb3ZlcmNvbXBsaWNhdGVkLCBhbmQgdW5z dXJwcmlzaW5nbHkgc29tZSBvZiB0aGUgY2FsbGVycyBkaWRuJ3QKZ2V0IGl0IHJpZ2h0LCBzaW5j ZSBpdCByZXF1aXJlcyBrZWVwaW5nIHN0YXRlIHRoYXQgbm90IGFsbCBvZgp0aGVtIGhhdmUgaGFu ZHk7IG5vdCB0byBtZW50aW9uIHRoYXQgdGhlIHJlcXVpcmVtZW50cyBmb3IgaXQgd2VyZQp1bmRv Y3VtZW50ZWQuICBUaGF0IGxlZCB0byBhc3NlcnRpb24gZmFpbHVyZXMgaW4gc29tZSBjb3JuZXIK Y2FzZXMuICBUaGUgb25seSBzdGF0ZSB3ZSByZWFsbHkgbmVlZCBmb3IgdGhpcyBpcyB0aGUgZXhp c3RpbmcKUXVlcnlEZXNjLmFscmVhZHlfZXhlY3V0ZWQgZmxhZywgc28gbGV0J3MganVzdCBwdXQg YWxsIHRoZQpyZXNwb25zaWJpbGl0eSBpbiBFeGVjdXRlUGxhbi4gIChJdCBjb3VsZCBoYXZlIGJl ZW4gZG9uZSBpbgpFeGVjdXRvclJ1biB0b28sIGxlYWRpbmcgdG8gYSBzbGlnaHRseSBzaG9ydGVy IHBhdGNoIC0tIGJ1dCBpZgp0aGVyZSdzIGV2ZXIgbW9yZSB0aGFuIG9uZSBjYWxsZXIgb2YgRXhl Y3V0ZVBsYW4sIGl0IHNlZW1zIGJldHRlcgp0byBoYXZlIHRoaXMgbG9naWMgaW4gdGhlIHN1YnJv dXRpbmUgdGhhbiB0aGUgY2FsbGVycy4pCgpUaGlzIG1ha2VzIHRob3NlIEV4ZWN1dG9yUnVuL1Bv cnRhbFJ1biBwYXJhbWV0ZXJzIHVubmVjZXNzYXJ5LgpJbiBtYXN0ZXIgaXQgc2VlbXMgb2theSB0 byBqdXN0IHJlbW92ZSB0aGVtLCByZXR1cm5pbmcgdGhlCkFQSSBmb3IgdGhvc2UgZnVuY3Rpb25z IHRvIHdoYXQgaXQgd2FzIGJlZm9yZSBwYXJhbGxlbGlzbS4KU3VjaCBhbiBBUEkgYnJlYWsgaXMg Y2xlYXJseSBub3Qgb2theSBpbiBzdGFibGUgYnJhbmNoZXMsCmJ1dCBmb3IgdGhlbSB3ZSBjYW4g anVzdCBsZWF2ZSB0aGUgcGFyYW1ldGVycyBpbiBwbGFjZSBhZnRlcgpkb2N1bWVudGluZyB0aGF0 IHRoZXkgZG8gbm90aGluZy4KClBlciByZXBvcnQgZnJvbSBZdWdvIE5hZ2F0YSwgd2hvIGFsc28g cmV2aWV3ZWQgYW5kIHRlc3RlZAp0aGlzIHBhdGNoLiAgQmFjay1wYXRjaCB0byBhbGwgc3VwcG9y dGVkIGJyYW5jaGVzLgoKRGlzY3Vzc2lvbjogaHR0cHM6Ly9wb3N0Z3IuZXMvbS8yMDI0MTIwNjA2 MjU0OS43MTBkYzAxY2Y5MTIyNDgwOWRkNmMwZTFAc3Jhb3NzLmNvLmpwCgpCcmFuY2gKLS0tLS0t Cm1hc3RlcgoKRGV0YWlscwotLS0tLS0tCmh0dHBzOi8vZ2l0LnBvc3RncmVzcWwub3JnL3BnL2Nv bW1pdGRpZmYvM2VlYTdhMGM5N2U5NGY5NTcwYWY4NzMxN2NlM2Y2YTQxZWI2Mjc2OAoKTW9kaWZp ZWQgRmlsZXMKLS0tLS0tLS0tLS0tLS0KY29udHJpYi9hdXRvX2V4cGxhaW4vYXV0b19leHBsYWlu LmMgICAgICAgICAgICAgfCAgOCArKy0tCmNvbnRyaWIvcGdfc3RhdF9zdGF0ZW1lbnRzL3BnX3N0 YXRfc3RhdGVtZW50cy5jIHwgIDkgKystLS0Kc3JjL2JhY2tlbmQvY29tbWFuZHMvY29weXRvLmMg ICAgICAgICAgICAgICAgICAgfCAgMiArLQpzcmMvYmFja2VuZC9jb21tYW5kcy9jcmVhdGVhcy5j ICAgICAgICAgICAgICAgICB8ICAyICstCnNyYy9iYWNrZW5kL2NvbW1hbmRzL2V4cGxhaW4uYyAg ICAgICAgICAgICAgICAgIHwgIDIgKy0Kc3JjL2JhY2tlbmQvY29tbWFuZHMvZXh0ZW5zaW9uLmMg ICAgICAgICAgICAgICAgfCAgMiArLQpzcmMvYmFja2VuZC9jb21tYW5kcy9tYXR2aWV3LmMgICAg ICAgICAgICAgICAgICB8ICAyICstCnNyYy9iYWNrZW5kL2NvbW1hbmRzL3BvcnRhbGNtZHMuYyAg ICAgICAgICAgICAgIHwgIDIgKy0Kc3JjL2JhY2tlbmQvY29tbWFuZHMvcHJlcGFyZS5jICAgICAg ICAgICAgICAgICAgfCAgMiArLQpzcmMvYmFja2VuZC9leGVjdXRvci9leGVjTWFpbi5jICAgICAg ICAgICAgICAgICB8IDUzICsrKysrKysrKystLS0tLS0tLS0tLS0tLS0Kc3JjL2JhY2tlbmQvZXhl Y3V0b3IvZXhlY1BhcmFsbGVsLmMgICAgICAgICAgICAgfCAgMyArLQpzcmMvYmFja2VuZC9leGVj dXRvci9mdW5jdGlvbnMuYyAgICAgICAgICAgICAgICB8ICAyICstCnNyYy9iYWNrZW5kL2V4ZWN1 dG9yL3NwaS5jICAgICAgICAgICAgICAgICAgICAgIHwgIDIgKy0Kc3JjL2JhY2tlbmQvdGNvcC9w b3N0Z3Jlcy5jICAgICAgICAgICAgICAgICAgICAgfCAgMiAtCnNyYy9iYWNrZW5kL3Rjb3AvcHF1 ZXJ5LmMgICAgICAgICAgICAgICAgICAgICAgIHwgMTcgKystLS0tLS0Kc3JjL2luY2x1ZGUvZXhl Y3V0b3IvZXhlY2Rlc2MuaCAgICAgICAgICAgICAgICAgfCAgMiArLQpzcmMvaW5jbHVkZS9leGVj dXRvci9leGVjdXRvci5oICAgICAgICAgICAgICAgICB8ICA3ICsrLS0Kc3JjL2luY2x1ZGUvdGNv cC9wcXVlcnkuaCAgICAgICAgICAgICAgICAgICAgICAgfCAgMiArLQpzcmMvaW5jbHVkZS91dGls cy9wb3J0YWwuaCAgICAgICAgICAgICAgICAgICAgICB8ICAxIC0KMTkgZmlsZXMgY2hhbmdlZCwg NDkgaW5zZXJ0aW9ucygrKSwgNzMgZGVsZXRpb25zKC0pCgo= --===============1035821583782047335==--