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SQL parsing for span.name with db spans becomes Slow when calculating large SELECT columns FROM table WHERE column IN ('1', '2', ..., 'N') sql query

See original GitHub issue

APM Agent version

v1.15.0

Environment

Operating system and version:

Windows 10 Professional 21H2 19044.1826

Application Target Framework(s) (e.g. net461, netcoreapp3.1):

netcoreapp3.1

Describe the problem

SQL parsing for span.name with db spans becomes Slow when calculating large SELECT columns FROM table WHERE column IN ('1', '2', ..., 'N') sql query

Steps to reproduce

Clone elastic/apm-agent-dotnet
Checkout tag v1.15.0

Modify test cases in test/Elastic.Apm.Tests/TestResources/db/sql_signature_examples.json as below

[
  {
    "input": "SELECT [s].[Id], [s].[CreateTime], [s].[Duration], [s].[FullTextHash], [s].[OnShelf], [s].[SourceId], [s].[Title], [s].[Url], [s].[Version] FROM [Speech] AS [s] WHERE [s].[Id] IN ('FCD84661-F36C-4DB1-8B92-BE0668027163', '14274997-dcc7-4a7a-b866-41a007b36b9b', 'F163CB1D-6F21-4EFE-8DE7-EF27EC86E616', '0B72BD1E-D400-48BD-A2A2-3566434C4612', 'C6302F71-B70E-449A-B780-01BDCC154827', 'A68175D4-EE5D-44D2-A60B-BB266AD805D6', '83a36518-3956-44a3-aeb0-398eec87b583', '8DBEB3F6-9DA4-4B63-ADD8-21533DA75E62', '0bd15ff5-4eac-48fe-a18e-17d74a3809fa', '6EB539B6-804F-4ED9-ABBE-847E727B431A', '8A9C422D-492D-4EF6-9918-6E1EF6A28CFF', '546b40da-75cb-4d37-9e6e-954048561c5f', 'f7de8e24-0667-4fbc-9c72-be6c2dba1df8', '9C5B7DFE-25F5-4E9C-A817-5D2540F3082E', 'C32D88D6-467B-464B-97AC-8CA4FFB57665', '0CB61EE6-F46A-4D95-9109-CB3B76437D7B', 'C0E1DEA4-1C45-40BC-94CF-104BC2A3D027', '6E062867-81D5-4E71-AFF7-ADCE05ADF5DC', 'fbf61692-ee7b-4250-86d5-3dfa82dd575c', '933F13E9-328E-4F53-9424-50B3D7FE20BC', '809269AE-A9FA-4B15-BDB1-A23990F37094', '999605cd-03cd-4f1d-a4bb-17732e3d57fb', '6D426C5D-6606-4FAC-9852-8A37BE1E4855', '994CFA77-EBFD-4F47-8027-6AE27191DFE1', 'aaca9a7d-9e60-454c-899e-d882ebe645e7', '82D58CFC-AA6B-4096-AD7B-7DF9A17B0851', '8300FB66-1140-4B55-A835-6D23E71A2B60', '11E369C6-52D8-4D95-A12D-3F62091CE08F', '2AC0B2D2-F254-4F9C-98B9-995FA2BC8B2D', '8D83EEAE-A853-45AE-AB00-EA148BFAEEDB', '7a398c9a-91ce-4b59-ba5d-cc632a85d0c8', '62C2A601-B8EF-41C7-8704-BDA118D7D155', '08740265-3A67-4ECA-A7B5-F5ADF4C0003D', '9FC3D92E-3A0F-4FB8-858D-079F64FF267F', 'c678ed09-d9c4-41e5-a686-88927313ac8e', '3C83B0D9-18CE-4EFB-996D-82020CC0B635', '7da1fcad-145f-46c9-9ff3-504495a10524', '7634be48-bd3f-4439-b933-5c59408f968c', '166F8C46-CE21-48F4-820D-6AC636ED916A', 'a726696d-11a8-454b-84c3-bb18e2571a56', 'DC1D3A08-5110-4563-9F72-3D5DDC445FB0', '71B23C9B-D9C6-45DE-8B99-9BE65E7D5295', '8f148acc-0d1f-4af1-bbb3-be29254356c4', '7178dd21-3749-464d-aaf6-5b911e359f51', '19BA2B65-8E71-4F13-B77F-8393F3D4814E', '5ED22AF6-DF1C-4AFE-97AD-FD3522C99A04', '12B29104-3F99-4E0A-B393-6BB562BEC63F', 'DCCF6E32-0A4A-429C-A194-EE7674DFE573', '53d84696-21c7-4927-83d2-05fa1447463e', 'CA75AD76-5974-459E-888B-04EA1BF59153', '54b8cb55-2a5f-4ebd-bd72-4cb3519e4475', 'D05E00E2-8478-4963-894E-9F7A59FF326B', 'AB797A60-7F98-44CD-8AD7-F1ECB282F513', '7205E7ED-BFD6-421E-99E4-0D1C0A4CE2FA', '755DD778-F2BE-46AD-B0C6-D2EAEA23B9D0', '7eb6cf27-f5e5-4f6f-a342-99ca0656701b', 'BFF7DF9F-96A4-4A18-996B-9A1CB626E4C8', '8F659DF0-AE9C-4C6A-B2A0-65F091884367', '66ECEFD9-BC7E-44C2-B520-AC6FCE0FEE9C', 'E9F131C4-4210-4724-B7F6-0FEF753B9C6B', '5756BEEF-E542-4234-8877-911E3202C176', 'BC84F42E-3259-4AFB-919C-4EE84427394D', 'D79F2EEE-6A11-4141-B2F1-C0B5AF101167', 'D90B0A7B-9D86-412E-9D59-993CB1B3B81E', '45AB41DD-F8FD-4138-9342-1CBA8D90D500', '0494eeeb-764a-460b-98c1-4272fff5ce86', '793BA50E-E914-4751-9056-B0A77181718E', '05CE4CD4-F586-4DE4-B370-A29E2FBE7D16', '5DD8B9A1-52A4-403F-A354-26ABE3BDD945', '43D8FAF4-939E-450D-A031-1627D5795E1F', '39ED73BF-E20C-4BC3-9838-5496D1991469', '0E875B4A-1BDD-4456-A7C7-A0E7C02A209A', 'E71366BF-622E-4D20-A264-FF9A120FF584', '0FBB123B-E5D8-4FFD-883D-D99011538231', 'F025190D-121A-4DCA-8E3D-94B4C8C31825', '68408E65-FA8F-4DF6-A168-9B27630916B1', '27E1ABD0-9318-4901-8EB0-95174B3E87A2', 'd53add63-729b-4d46-81ef-801b55340866', '2DB80BD8-9B70-4A9C-A8AB-E15083415051', 'FA7451BE-46A4-45B3-AA40-A45B4782513C', '9E332D3B-7361-4574-9438-FB7C6DC2E7D6', 'B44B51D8-7E65-4A88-915F-DD1861D992D2', '7cd39329-df68-4575-924e-a7c95590b06b', 'FBE1EA16-AE3F-4088-B601-9D2B1A55C53B', 'D451D51C-0E41-4848-B5E2-7F037438C02C', '91D10D83-D52D-400E-A4FE-41E4DFB4F0F1', '91573EAA-15D9-4521-98A3-6FF3716C227C', '5F12EA55-0561-4897-9A21-D8F775441A41', '7c6ecfa8-991e-4241-bf34-9a368ae5b019', '5dd07bc0-9fbf-4c2b-9b39-00c22997678b', '6BDB40BD-E115-4185-B983-349A41D5C610', 'd2751e06-820c-4af1-a370-357a17023b03', '4bbd6263-3007-47b4-8772-83fcc2ab27e5', 'A516F310-409E-4018-A20C-9E07EA6BB5C6', '4951B540-0375-40D4-84C3-429A54E713AE', 'A99F7D88-7F22-439D-8F27-6E5A37A92B10', '5eaa098a-c257-42c5-9dab-b9403260eb8c', '6CDE5D72-1B5A-45E0-852B-7D16B8AE3904', '41A79150-0C18-4786-A59D-E9C77D9081E7', '80E4068F-3C45-40B2-8B8E-3325D2AA4AD2', 'acbf055a-4b2b-4378-ae02-db73af401c7a', '99DB857E-3C13-4FC8-9BDA-52B722F34B4D', 'CAE45B9B-9D8C-4E3F-BA20-26E260D20F70', 'EF46229C-9737-449E-B01D-128D2355C9F0', 'A569C016-4795-408C-900C-A92788539C8B', '808516c3-016d-4617-b15c-001e17dae0ea', 'BB4926A2-6127-45F0-A7A1-63FA54A319B5', '5D08BA0E-FEBD-4E1D-A89D-F9B4AAF16840', 'E320E1A3-6C1D-405A-A226-31B401B2AA11', 'A6DEB887-A27F-46FA-9EE8-EA9230531794', '192400B9-891A-4213-BBA6-85132918023B', '0cf59dc7-d427-435f-9a24-f2053a51ccae', '64354773-C8F5-44B8-B2A2-26F699FC9562', '9A273C7E-47E6-4E6F-9760-A739D493B292', 'EC4E7B84-EAEC-4810-B0E1-163F85C7AAE6', '37877CAB-4B82-417D-8E8E-77C66BBA29D4', 'A26047DA-18A9-40DE-ABD5-B828E7CCF84F', '61DB40C9-46C5-4A93-AAAC-2336AD109070', '86F99038-E41D-4CBD-A02E-0037DAF3385D', '390A241F-29B8-4E0D-B5C7-ECC7BB988FC5', '262FF919-E743-48A4-B0F8-EC16982D1E10', '72ED59FB-13DB-4C22-B170-C57DD6D9F5EC', '3F9AA0F0-2920-492F-812E-7DA5A1DC2B8B', '185C79A7-6E52-48A0-A761-ABCFC41CEF3A', 'B88EECD7-50A2-4EE7-8304-0E3D8F2063EE', 'C27E71FA-CB4C-4F89-88AB-EA1B985594FF', 'A09A085C-1CB3-4B47-8C0D-177164C4B188', '4D915C96-6467-40D0-B662-DC4A7DF8F617', 'F911A8AD-457A-468F-9814-43A3ADEB99A4', '6bf500a1-df44-4674-b847-3b3f0c66595a', '6d8b7d7f-1068-4399-8e40-6daa28fe1ac2', '0901068B-C94C-496D-9EA5-5E92ED1685C3', '1276A9F8-7CEC-4F50-86BE-A343C781B5CA', 'B96E6409-D81C-4860-B26C-78F73BF2BDDE', '319bab85-508f-42f3-8d65-108980e91093', '29567327-1DCC-4170-BD89-212B989B0149', 'E9BA14CD-80BC-4BBB-8259-CCD7AEC18972', '8A00FCCC-431A-486C-B590-8BA74D5A9E8F', '1C9A9974-EC47-4050-9AEC-CC02D1C7E62C', 'b917ab84-34c7-4388-afec-a6d15966010c', '8980F256-D58C-48E3-8E88-E1C95B8778ED', '6C98E78F-707D-404D-BA03-59BCA6309193', 'AF4E3A44-A8F9-43F5-B5C0-A008988FAE7D', '7D2DF70E-6121-4E45-840A-DF3A6DE2D2FB', '5D3D9F4A-7EF5-42DC-9D5C-9A1C95C3B66A', '1D28DF5B-123B-4E3D-892E-832691A63D78', '8ADA5FFC-E727-4623-9C24-AD5EF3806067', 'A67321E8-D8DC-47F3-86E4-D63AB12E1BC0', 'A84EAEAC-919B-4CE4-897F-9C10F509DC4A', 'EA91B836-9201-4A7D-8E05-A10AAB178A47', 'AD76272F-58B0-4066-B040-93784A9D436B', '7D15B316-9781-4AF7-B745-2169085DE864', '3CF90BB8-F9A1-4A2E-993C-186A12203B9C', '3A96D992-9E04-4407-8034-9877A391AC63', '78A31A50-934A-47DA-ABB2-D97D2A5BCAE2', 'CC24E4B6-738B-47D0-933E-6084B5D815DB', '2439F5C3-51AF-47AA-A757-8EFBADAA26F0', '13F78582-B266-4AA9-8613-52021DBDADAA', '59225190-BA66-459C-8B62-F01E069C22D1', '1ACAC63C-23D8-4B67-9E3A-9C599A86899B', 'cfc2febb-2ebf-4f25-b4ac-0875fb79aba5', '7E657F69-CB60-4D5D-A934-79A5EAAE103E', '99BCE25F-25DD-4817-BDAD-64AD833B57F9', '960B8820-5D12-4EB3-B425-1B2BC11A5E18', '4590659b-a6a5-401c-a313-d17f0b899eed', 'A74B66A2-3D2E-4F7B-829D-CBE0426E4345', 'ad656fdf-dca1-4f5d-96b4-ac834a5d2681', '6BC74999-E112-4287-8BA7-7C692F8A5FC2', '77986BA9-EC5D-4DB8-AE95-0BC3F7DCB8D8', 'e6fd31ba-8e16-43a6-9866-e9f2524e431c', '077082d4-9e13-4207-9e63-a97288d6d6c3', 'CB1C4C3A-A24A-429E-8068-05DFD83D600B', '7E15A4D3-AAC2-4EA9-B278-D2D1CC8089B6', '65CBAB7E-8E0F-4AB0-940E-98CD03B465A0', '148915a1-c04b-44ee-80a6-0bef982256c3', 'FF7CA58D-4CE8-4B55-9D4F-1FDB94005C0F', '47502315-14E1-4307-AE3E-7EA94FC15A48', '9f97c562-039f-403e-9130-780f7dd74de0', 'B4C97D08-822D-4150-8366-810835D15F73', '086B19DF-A359-4DA5-81E0-E5D9EF59543E', '721ecf97-583a-4b6a-aef1-89039fc96c95', '917A05A5-064C-4D91-B69E-CC3A48398DFF', '44E795D5-5888-48D2-A51C-4C7C5E27FC25', '61ddd52c-cdcb-4243-9f37-1bed224436e6', '179B110E-4E04-4BE0-9CC7-0483921BD3A7', 'ea00a037-3ca2-4bf5-a5db-a25d5f26c9d0', '56F8D737-0418-40D0-82D6-A6C1BA1E57DA', 'A93513DC-3A14-4324-B0E5-C45B880DB34B', '16e2fa56-9464-4cec-8d1a-6f2446ea5fa2', '9dad662c-0310-4b5b-a9a2-6a2a9ecf902a', '85A0F177-3B9A-464A-9F23-3FEA22CE600A', 'B213876B-17BD-4459-B43B-F699D2BAE0F6', 'D4FD8AD0-52DA-4BE2-A280-5065733E53D6', '023C5B65-F53C-4B72-9F66-620B4DA3C629', '41670B0D-6AE9-4D61-9FD4-7D70807D7F13', 'FD07BC75-360B-4C3F-9A77-49B712112285', '2CC0EAC8-67D8-4984-BE64-69E777DBFD49', 'fa06f63e-8579-457c-9d3a-341381ef9b9c', '8ba176dc-e543-4e77-ba01-e47435a20a67', '1ECF1DBB-69EA-4EC7-8D70-54C1C2162FD6', 'dd8136cb-26ee-4533-850a-d73cf24926f2', 'C7AA558D-3884-4D0C-8468-37514C9AE5E3', '739feab3-26fb-480b-944e-b5f4cae01759', 'BD54B390-D073-419E-9D66-9BA472254646', '9BF65748-046A-4B21-AA76-7B53461A545C', '7A32A1D7-8131-4429-896D-F741ECB3A4E9', 'DBD8412D-89AC-4147-A9BB-F158F5EE0118', '1304D3E4-FD8A-4664-A248-264E54E5EA11', '0B5AFF09-B532-4154-AC8B-C767F100B5AC', '12D0CFD2-8890-41B5-8A3F-B71D89BF1FE8', '5BF6444C-FD96-4C5D-BD11-B8AFE8FB8465', 'cfff2eb0-975c-4fb2-b383-056aaad66972', 'EC445FAA-A574-40BA-969F-C27AC4E53350', 'aefe4dd7-0604-4d0e-8e31-3aa9b3153960', '97DC2B01-2778-4009-9EBD-EDDF4C0BC914', 'FC9A6A6D-63EA-44CF-A039-29EEC5F29CA5', 'FD2C878D-2CBD-469E-9EB7-A6DBA6A25B3E', '3A797A45-E68E-4F06-8732-840457EC0563', '370ABA50-3E4A-421C-AB05-4005DA43A083', '6B77502C-A20E-4B5F-BCCD-CB4060B1E217', 'DF6F2240-09CA-44A5-8912-76AC7D82BA71', 'D329FE00-CD85-4A3B-AF78-9D2DC076421F', 'C672FD84-D401-42EF-91B0-7F42BA9B62F1', '83CACF57-9614-4610-838D-F0636CD8AE4C', '008d091f-6bad-4c63-8d35-37b615164dde', '7293d93d-b74b-4e30-8bc8-7879ad19948f', 'EA991606-F644-4685-8D38-F1F9877364A0', 'c386954d-9d84-4319-9898-2c43e16810ec', '7C48E38C-8880-4744-B422-C49124C398C2', '0f947e62-1131-4fff-a72f-7d79452def77', 'a776fc18-0e69-46ac-95ab-6d16ae9ef3f8', '5C0A59F6-1719-4113-9A46-25A97FA3066E', 'b2d8c6f0-cae3-4b99-8f68-e6b621b9f54a', '2FF31711-3518-482B-BEC7-7494F6C22C4A', '4988e219-7915-41fc-a9a6-1e96e47dbfb2', '2DD69090-931C-41EF-9DD1-9467CBB8F451', '65A78A54-56E8-4698-8C66-04354455691D', '3C654520-7C6D-41CA-9A4D-D5C97E094C5F', '869E98F1-A535-40D2-91E0-5CFB2D8AB885', '360F575F-729E-4D0E-A713-0FF6C216176E', '84f7791b-18a8-4653-a752-140dc3583106', 'FCC3BE94-1208-473B-B25C-F3C97F01754E', '96456E0A-FA42-4814-B11D-B18C4B92DF50', '4b15df34-7072-481b-b451-07635132d021', '4A44CA1E-8D00-464A-8A28-E031F9DED410', '73D5A0D1-A947-4DAD-8AAA-BA9F25CF71F6', 'AB1CE070-57BA-4C8E-956F-87A2EA5C6AAD', 'b630ae3a-f817-4cd0-a45a-17bd4def0883', '0C573A01-7280-4D26-9818-066BA1C6F330', 'fd942009-9dc1-44d1-b95f-8a43e98e61ba', '1289b7ed-008c-4933-8f44-379a87d6e612', 'ADB65AF6-11E9-4737-8BC8-81A4C071F8C0', 'ABC065B3-44F3-471F-89A2-109AAD6B137A', '07f49f94-949b-42b1-a8ce-ddf01c04a6af', '0762a67d-6bf3-41d7-8372-a97ad65ee4a9', 'db44f56c-7012-4894-a53c-634598325ac2', 'b1625193-fd96-4ad6-9769-dd934c3288c0', '79c5564c-c2b6-4e45-999c-5efd7aef5b4f', '8C9D9E24-BBFC-480E-9ADF-4CA7228E3C0A', '9e35c261-6851-4434-a315-04699b3bbc9c', '126BAE1B-3ECF-4D1F-82C4-7722EB51665A', '717BE78C-15DB-429D-851D-B2CE6ECF7B10', '28b5d1fd-4385-4106-bd6c-0dc6f048f04e', '8F51D0A8-BB8E-4518-BC3C-C47A57E68BBA', '064C86EE-CC50-4C9F-8E64-A89C0EC5909C', 'A76D4B2D-FC4E-4EF2-AE9C-59FF3D4EE45F', '66D2883C-ECFE-4CD7-9F5B-F1E8A954CB75', '4E9B9C5A-3C19-4C28-A7EE-A9BBC4BA455B', '5332B41E-31E6-4221-89DD-E569B3774E3F', '94087766-82ED-446D-9C63-76C453711134', 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'a96965d8-9638-457a-9bdf-5706394d1354', 'a0921826-53d1-4c62-8d3f-e1117dfda843', '50802005-86c2-4f43-9356-74f7dd177032', '4c196006-c6e2-4d49-ba68-fe04d9100339', 'BF1F1765-B4AB-4C2A-A1A3-BD5CEA11D9FF', 'c8832db5-2f2b-43ba-95cc-5a07b543fe03', '0465ED90-BACA-4C61-92A8-BB70BF105DB9', '4015191D-6E46-4CAA-B05E-8621780CFB73', '9188aa0a-0c92-41af-82de-13a803df74b6', '9C0A3FE7-9F19-4922-A742-2A76F0C29D4D', '00be3df7-ab64-4ceb-804d-284db2d73815', 'E0A5DF5E-CD8C-479C-846F-E40C1EBAD0C1', 'B5613661-220A-45C6-8F39-D5A43FDC3F1B', 'D0946106-7F40-41D3-9EF6-ADFCDE769DAD', 'E0C00718-9381-4249-A60A-2F5EDE775FCB', 'D40D8612-AA74-4883-9157-3042AA5797F0', 'D19E6B5D-6E1A-4C1C-B48C-A30B179DF3F3', '8B037581-08A7-481B-B8DB-5B28612A4951', '2F487CD3-B059-40AE-BA60-D2F88414FBDA', '35665D16-69A2-443F-A49E-FD5FBB0A1CA9', '95E52FB2-E931-4954-A491-CE110D21FAFE', 'e3b31408-331c-406d-9fed-ea6bea4a5424', '79d18a41-e4cb-453b-81a6-995959cff4e8', '5ba97bf9-7660-46a0-841d-2cc6d6494be1', 'B21722D6-630F-44DF-8578-EC1E29EDF7CC', '20A66E09-E48C-4A8A-B75B-67E153BD2F0C', 'F8758D03-E63B-428F-8F11-1A8A6F6A6516', 'F4BD0683-0C02-4C9A-B535-AE2C1CC82BFD', 'F3D40D8E-2A90-481D-A536-7393C30CD27F', 'E544A578-B74D-479F-B8DB-4020031517B5', 'E1AE1067-8448-47B1-8E60-CE77FE71AAA4', 'E18C4306-5E27-4CCE-969B-83D3487D5AD5', 'D35C7081-F013-4053-9F58-24C063C9DDCE', 'C88CDED9-4DC7-429D-8C4E-657E72CDA2E5', 'B4650761-EBD0-4D0B-801E-81FA27EC42F2', 'AD51D1FC-3C95-4215-8B3A-5D6209853512', 'AAFA9691-DC62-49CD-8B90-2848A9FABBEE', 'A40700DE-56ED-4BE3-B1DE-8976E81A9C75', '8F406559-8499-4143-A2F9-F2A080C4232F', '8A7CCB4E-25F3-40C9-8454-A3CBA26F31C7', '87B96787-2842-4C80-A8F9-E4BD9E37FFEF', '8433B6F3-4E96-4DD8-B31B-3327272B8F6B', '7C727602-B068-4E68-A460-9493F70E939C', '727C02C6-5D19-4382-ADDC-453C0CA56A9F', '60D99BF7-41C8-41FA-AE36-333F36827742', '5FB3D3DE-B35F-4CD3-8604-E95DB4782369', '5D0039B5-ABBC-454D-8BB1-10A330042FFA', '5C5FB635-8D90-4275-B321-DA360B556A18', '5484702B-9A4F-4214-AED8-6F244B409C38', '4AE1CECC-1646-40D1-954B-B0D8FF16A82D', '41E4B852-D3F4-4CFB-B5EF-B79CA25C1659', '3D1C8C5E-083C-4525-AB8D-8F7478181488', '3631280C-84EF-4891-A564-2263CFF78F18', '2F5C785B-EDFE-43DD-8DF1-9622FAD6BE3D', '24CF810D-9633-49F4-9F4B-F8AB8BD5ED03', '247EF179-6D68-45DF-BA60-4F63003FD216', '1D3C7E27-1C10-4E3D-95CD-86B9699E07EA', '1CBFA40D-3624-4B8B-851B-AFFEAB078E12', '161142B1-CC59-4DFA-B100-2316B0C62E80', '146D15A8-1CBD-43D3-8F4C-F568952F7A1F', '13316E84-8F98-48CA-86EA-5D01E9E61398', '0F460273-CCD7-4886-A1A4-1D5C96F97CC1', '0D749881-0F67-449E-97C5-1CF7F56915DA', '09A168BB-CF9E-4849-8FB9-088BFFBDD2C5', '079FE03E-AAC0-4627-9F7A-D83B91C6F675', '02F23B27-8596-4892-91AD-375F6F315273', 'FF2369C8-ABF1-4455-B0F3-9525BBE156AE', 'FCEBF5D4-BF2A-4679-8F66-44580CD97657', 'FC696FF3-CD0A-4AE2-9D42-E03B143A62C8', 'F20C53EB-4832-452D-8124-20B6E327D85E', 'EA1B9A54-8AEC-4C69-8F88-DCB15742A70F', 'E45F7274-52BE-4417-8F5F-BC59996AA583', 'ABA03842-4D52-4881-95F8-7C939CDDF916', '9D433B73-C4DC-4514-9C61-556D01C10173', '96C4F9BA-F264-4650-A520-251802E50807', '955924C6-6B9A-4435-B85B-03806104E161', '81D4931F-3643-471E-948E-E7763DB67AAA', '6E78B4D1-0462-40D5-8B8C-3C86D97B99DB', '6A2CFDAC-6742-4F0F-9378-432D6236D3D3', '66142156-73EF-4AC3-9E30-99D2F4ADD1F8', '64C7CD32-7688-491C-A063-9E83CB072B19', '62BE1BA9-2C4D-424F-B38C-0C15FA01B0DF', '541E54AA-76AF-4FE2-86CE-17A897DFBF88', '33B6716D-3318-43BA-A6B3-E4AA52A75185', '3014274C-C691-4D0F-BE1F-BC85747E8ADB', '0EC8716C-0E04-4AFA-82C6-94A908244A0B', 'CA1E2FC5-8809-4AF9-B05B-BF3D517BEF7A', 'B52EB6B2-3065-44B3-974C-CD5649211733', '9413088B-3954-422D-ACBA-B6B3744466D6', '807A9B76-5260-4EB7-A50D-F7E92E084628','8855e05b-7e38-4298-942c-afe5f4157e9e') AND ([s].[OnShelf] = CAST(1 AS bit))",
    "output": "SELECT FROM Speech"
  }
]

Run test TestDbSignatures in test/Elastic.Apm.Tests/DbSpanNameTests.cs
Check test duration

Code/PR where this issue first introduced

https://github.com/elastic/apm-agent-dotnet/pull/1657/files#diff-70b8cfeedf4e7593846932c85a11f77ae8e515c6bf644af3d41b4bd8b46eb4abR100

Possible fix

Because for this case, the result span.name would be SELECT FROM Speech, if that’s what we expected, maybe for large SELECT columns FROM table WHERE column IN ('1', '2', ..., 'N') sql query, we can truncate IN ('1', '2', ..., 'N') before we go to parse span.name.

Issue Analytics

State:
Created a year ago
Reactions:2
Comments:5 (4 by maintainers)

Top GitHub Comments

3reactions

d-zieglercommented, Aug 10, 2022

Found the culprit in the Scanner.cs code. The problem here lies within the Peek method, as it uses _input.ElementAt(_pos) instead of just getting the char at the index by using _input[_pos].

Measuring the time of the OP’s query with ElementAt, the signatureParser.QuerySignature method measures something around 421ms. By using the direct index access, the duration goes down to 2ms.

The duration of my own query measures ~1900ms, with the change its down to 3ms.

2reactions

gregkalaposcommented, Aug 10, 2022

Thanks for the fix @d-ziegler - the PR with your fix is merged.

Additionally, I also opened https://github.com/elastic/apm-agent-dotnet/pull/1782 - that’ll add the sample input sql query to our tests and also adds a benchmark to measure this.