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 4.96) (envelope-from ) id 1vQmSF-000CC9-2d for pgsql-hackers@arkaria.postgresql.org; Wed, 03 Dec 2025 12:59:36 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vQmSD-00DJmY-0o for pgsql-hackers@arkaria.postgresql.org; Wed, 03 Dec 2025 12:59:33 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with utf8esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vQmSB-00DJmN-2r for pgsql-hackers@lists.postgresql.org; Wed, 03 Dec 2025 12:59:33 +0000 Received: from xmbghk7.mail.qq.com ([43.163.128.50]) by magus.postgresql.org with utf8esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vQmS2-002v3z-2h for pgsql-hackers@lists.postgresql.org; Wed, 03 Dec 2025 12:59:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1764766754; bh=1+kSF4gl6rKwgOYuMaQImkAOelhHW4/2PbqMUrWbFa4=; h=From:To:Subject:Date:References:In-Reply-To; b=menZGuqficrHIi3jpYCuDLemYEKhTb6gAbWbGMzANfebTWjq2bgDvlnh2H5pHwvH/ RfrqeAUxJJrFamnrOeoJN8sCRjT27XUOJVtUR48p6PjBb+zbmqI+sjJmD4tvKjtKOi FZq+6Cjrm2lQ1EDG1vsC2mHzkUkXL/afW5BlP4no= X-QQ-XMRINFO: M/715EihBoGSf6IYSX1iLFg= X-QQ-XMAILINFO: OBLYu6HNBjBS2X6xqdp+w9EiMYKACXZJraCSO0xOmZw4ik6vWT24oxbrxVbcOa duxgyjRhkF1PNV0YfOA+fWef/QHWFa0NaKddcaa2d0zVhWr3ZgP/JXXX+fh4nEz0AH6nFbd+AGpzI thMm36qGWTCspXY6q4RofUOOcxVTukzEEqoatkzLOjf/iZI2R7wDzqrp8EVB+QMNN4UY8AYZXWom9 KxQDCOHhZ2CiXTmdGo4nqD/21VgzIgteVGI/msBEeFE1H8tDEHLGTGabDqSmpqYaxd6H+1dt7dJBI ofkmAWKA4JUV8ZZ4cm9TvLjm1C5RXJmBwpsa3yY67qUNL2J1xy7Cgyn189RO1RQLz0CnycIdRfgxq rbKpYRPzezZSUnvDbvCZopZDrDROFmDZoRfhmyScxvygDQOi3bSUind1QrMwHesbs7uT5Bcwo+/bI 406ggZJGa4aGy3+EHm7wFAAQc1Qz5X0T6ms7fguvAOYOexsIsCCQ3V0jXNzV8csnaYq5oxF2hLpyE 2uiYaKzSPqiUlD3nSua9s/09MmyUm3A40a+29mcADjJXDNa3Sr0k8jlXGJu9kZdHbvXwLLZCXG3a8 wAKk+5gl1Cn9IMhlzIW7n7G/K8qJwV0SWwfvC9Zl12jmjfGQbLyQNwdiZoVgqluqoB+WChTgGEN+n IcaPZ2n7XHsz8L6sxoJxLuUdiEXSzKvRPFBM9Xhy8vCf0/lMHzzQ+iRD+ZD9E0MsRDMklScad2UOI 9L07SSbAsCGTgamL8N7bzgQaNknEFQypvK3ajzhH+XNCya5z2ac7S2aws/mNpkfZzIVk64J+ZzACH wN6+fmhg+kiO+13cTlQLpOyYHu5gyxOvxY8OABtFS86IhQ0vTFLQ/ODCZVevZx6xseKByWWlv5GVY JSddwYLaux7juBbWvINcf5zYesEay8hCbzpdk37E4dGDqCt+0f5KwITigKk9BgoSRPVCIJQMRd7ii Fazj5XSFSHGneeNIbgMZKSGFWocPGWvebJeBBy6swKFbegBTaYl4X6lOojodeK6/ovUeDst+DGXIC 6MKKY6TSmWaIz8L6RkBzoVlGMNCISskArKNPEFxmNq+xytQjTYylASEnSqA== From: "=?utf-8?B?Y2NhNTUwNw==?=" To: "=?utf-8?B?SGVpa2tpIExpbm5ha2FuZ2Fz?=" , "=?utf-8?B?cGdzcWwtaGFja2Vycw==?=" Subject: Re: Support loser tree for k-way merge Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Date: Wed, 3 Dec 2025 20:59:13 +0800 X-Priority: 3 Message-ID: X-QQ-MIME: TCMime 1.0 by Tencent X-Mailer: QQMail 2.x X-QQ-Mailer: QQMail 2.x References: <28f47336-84e2-445e-8216-d1ce7d3ddc3e@iki.fi> In-Reply-To: <28f47336-84e2-445e-8216-d1ce7d3ddc3e@iki.fi> X-QQ-mid: xmseza62-0t1764766753tipx46e82 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk SGkgSGVpa2tpLA0KDQo+IFdoYXTCoGlzwqB0aGXCoHdvcnN0wqBjYXNlwqBzY2VuYXJpb8Kg Zm9ywqB0aGXCoGxvc2VywqB0cmVlLMKgd2hlcmXCoHRoZcKgaGVhcMKgaXPCoA0KPiBmYXN0 ZXI/wqBIb3fCoGJpZ8KgaXPCoHRoZcKgZGlmZmVyZW5jZT8NCg0KSW4gdHVwbGVzb3J0X2hl YXBfcmVwbGFjZV90b3AoKSwgaXQgaGFzIDIgY29tcGFyaXNvbnMgZWFjaCBsZXZlbCwgYnV0 IGl0IGNhbiBlYXJseSByZXR1cm4NCmlmIHRoZSBwYXJlbnQgbGVzcyB0aGFuIGJvdGggY2hp bGQuDQoNCkluIHR1cGxlc29ydF9sb3Nlcl90cmVlX2FkanVzdCgpLCBpdCBoYXMgMSBjb21w YXJpc29uIGVhY2ggbGV2ZWwsIGJ1dCBpdCBjYW4ndCBlYXJseSByZXR1cm4uDQoNClNvIG9u IHNwZWNpZmljIGRhdGEsIHRoZSBoZWFwIG1heSBiZSBiZXR0ZXIgdGhhbiB0aGUgbG9zZXIg dHJlZS4gQnV0IEkgdGhpbmsgdGhlIHBvc3NpYmlsaXR5DQppcyB2ZXJ5IHNtYWxsLg0KDQot LQ0KUmVnYXJkcywNCkNoYW5nQW8gQ2hlbg0K