Re^2: Database processing

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Re^3: Database processing by davidrw (Prior) on Aug 06, 2005 at 02:37 UTC
hmm... print out `$avgSQL` and make sure it's valid sql. If there's anything funky (`/\W/`) in the column names they'll need to be escaped.	[reply] [d/l] [select]
Re^4: Database processing by DrAxeman (Scribe) on Aug 06, 2005 at 02:48 UTC
I printed $avgSQL and got: SELECT avg(PDH_CSV40_EasternDaylightTime_240_) as PDH_CSV40_EasternDay +lightTime_240_, avg(ERWWCOMMUNITIES_Memory_Pages_sec) as ERWWCOMMUNIT +IES_Memory_Pages_sec, avg(ERWWCOMMUNITIES_NetworkInterface_CompaqEthe +rnet_FastEthernetAdapter_Module_BytesTotalPERsec) as ERWWCOMMUNITIES_ +NetworkInterface_CompaqEthernet_FastEthernetAdapter_Module_BytesTotal +PERsec, avg(ERWWCOMMUNITIES_NetworkInterface_MSTCPLoopbackinterface_B +ytesTotalPERsec) as ERWWCOMMUNITIES_NetworkInterface_MSTCPLoopbackint +erface_BytesTotalPERsec, avg(ERWWCOMMUNITIES_NetworkInterface_CompaqE +thernet_FastEthernetAdapter_Module_CurrentBandwidth) as ERWWCOMMUNITI +ES_NetworkInterface_CompaqEthernet_FastEthernetAdapter_Module_Current +Bandwidth, avg(ERWWCOMMUNITIES_NetworkInterface_MSTCPLoopbackinterfac +e_CurrentBandwidth) as ERWWCOMMUNITIES_NetworkInterface_MSTCPLoopback +interface_CurrentBandwidth, avg(ERWWCOMMUNITIES_PhysicalDisk_0C_PCTDi +skTime) as ERWWCOMMUNITIES_PhysicalDisk_0C_PCTDiskTime, avg(ERWWCOMMU +NITIES_PhysicalDisk_1D_PCTDiskTime) as ERWWCOMMUNITIES_PhysicalDisk_1 +D_PCTDiskTime, avg(ERWWCOMMUNITIES_PhysicalDisk_Total_PCTDiskTime) as + ERWWCOMMUNITIES_PhysicalDisk_Total_PCTDiskTime, avg(ERWWCOMMUNITIES_ +PhysicalDisk_Total_AvgDiskQueueLength) as ERWWCOMMUNITIES_PhysicalDis +k_Total_AvgDiskQueueLength, avg(ERWWCOMMUNITIES_Processor_Total_PCTPr +ocessorTime) as ERWWCOMMUNITIES_Processor_Total_PCTProcessorTime, avg +(ERWWDC1_Memory_PagesPERsec) as ERWWDC1_Memory_PagesPERsec, avg(ERWWD +C1_NetworkInterface_IntelPRO_100NetworkConnection_BytesTotalPERsec) a +s ERWWDC1_NetworkInterface_IntelPRO_100NetworkConnection_BytesTotalPE +Rsec, avg(ERWWDC1_NetworkInterface_MSTCPLoopbackinterface_BytesTotalP +ERsec) as ERWWDC1_NetworkInterface_MSTCPLoopbackinterface_BytesTotalP +ERsec, avg(ERWWDC1_NetworkInterface_IntelPRO_100NetworkConnection_Cur +rentBandwidth) as ERWWDC1_NetworkInterface_IntelPRO_100NetworkConnect +ion_CurrentBandwidth, avg(ERWWDC1_NetworkInterface_MSTCPLoopbackinter +face_CurrentBandwidth) as ERWWDC1_NetworkInterface_MSTCPLoopbackinter +face_CurrentBandwidth, avg(ERWWDC1_PhysicalDisk_0C_PCTDiskTime) as ER +WWDC1_PhysicalDisk_0C_PCTDiskTime, avg(ERWWDC1_PhysicalDisk_Total_PCT +DiskTime) as ERWWDC1_PhysicalDisk_Total_PCTDiskTime, avg(ERWWDC1_Phys +icalDisk_Total_AvgDiskQueueLength) as ERWWDC1_PhysicalDisk_Total_AvgD +iskQueueLength, avg(ERWWDC1_Processor_Total_PCTProcessorTime) as ERWW +DC1_Processor_Total_PCTProcessorTime, avg(ERWWNAB_Memory_PagesPERsec) + as ERWWNAB_Memory_PagesPERsec, avg(ERWWNAB_NetworkInterface_Intel825 +5x_basedIntegratedFastEthernet_BytesTotalPERsec) as ERWWNAB_NetworkIn +terface_Intel8255x_basedIntegratedFastEthernet_BytesTotalPERsec, avg( +ERWWNAB_NetworkInterface_MSTCPLoopbackinterface_BytesTotalPERsec) as +ERWWNAB_NetworkInterface_MSTCPLoopbackinterface_BytesTotalPERsec, avg +(ERWWNAB_NetworkInterface_Intel8255x_basedIntegratedFastEthernet_Curr +entBandwidth) as ERWWNAB_NetworkInterface_Intel8255x_basedIntegratedF +astEthernet_CurrentBandwidth, avg(ERWWNAB_NetworkInterface_MSTCPLoopb +ackinterface_CurrentBandwidth) as ERWWNAB_NetworkInterface_MSTCPLoopb +ackinterface_CurrentBandwidth, avg(ERWWNAB_PhysicalDisk_0C_PCTDiskTim +e) as ERWWNAB_PhysicalDisk_0C_PCTDiskTime, avg(ERWWNAB_PhysicalDisk_T +otal_PCTDiskTime) as ERWWNAB_PhysicalDisk_Total_PCTDiskTime, avg(ERWW +NAB_PhysicalDisk_Total_AvgDiskQueueLength) as ERWWNAB_PhysicalDisk_To +tal_AvgDiskQueueLength, avg(ERWWNAB_Processor_Total_PCTProcessorTime) + as ERWWNAB_Processor_Total_PCTProcessorTime, avg(ERWWSEARCH_Memory_P +agesPERsec) as ERWWSEARCH_Memory_PagesPERsec, avg(ERWWSEARCH_NetworkI +nterface_BroadcomNetXtremeGigabitEthernetDriver_BytesTotalPERsec) as +ERWWSEARCH_NetworkInterface_BroadcomNetXtremeGigabitEthernetDriver_By +tesTotalPERsec, avg(ERWWSEARCH_NetworkInterface_IntelPRO_100NetworkCo +nnection_BytesTotalPERsec) as ERWWSEARCH_NetworkInterface_IntelPRO_10 +0NetworkConnection_BytesTotalPERsec, avg(ERWWSEARCH_NetworkInterface_ +MSTCPLoopbackinterface_BytesTotalPERsec) as ERWWSEARCH_NetworkInterfa +ce_MSTCPLoopbackinterface_BytesTotalPERsec, avg(ERWWSEARCH_NetworkInt +erface_BroadcomNetXtremeGigabitEthernetDriver_CurrentBandwidth) as ER +WWSEARCH_NetworkInterface_BroadcomNetXtremeGigabitEthernetDriver_Curr +entBandwidth, avg(ERWWSEARCH_NetworkInterface_IntelPRO_100NetworkConn +ection_CurrentBandwidth) as ERWWSEARCH_NetworkInterface_IntelPRO_100N +etworkConnection_CurrentBandwidth, avg(ERWWSEARCH_NetworkInterface_MS +TCPLoopbackinterface_CurrentBandwidth) as ERWWSEARCH_NetworkInterface +_MSTCPLoopbackinterface_CurrentBandwidth, avg(ERWWSEARCH_PhysicalDisk +_0CD_PCTDiskTime) as ERWWSEARCH_PhysicalDisk_0CD_PCTDiskTime, avg(ERW +WSEARCH_PhysicalDisk_Total_PCTDiskTime) as ERWWSEARCH_PhysicalDisk_To +tal_PCTDiskTime, avg(ERWWSEARCH_PhysicalDisk_Total_AvgDiskQueueLength +) as ERWWSEARCH_PhysicalDisk_Total_AvgDiskQueueLength, avg(ERWWSEARCH +_Processor_Total_PCTProcessorTime) as ERWWSEARCH_Processor_Total_PCTP +rocessorTime, avg(ERWWSQLWEB_Memory_PagesPERsec) as ERWWSQLWEB_Memory +_PagesPERsec, avg(ERWWSQLWEB_NetworkInterface_BroadcomNetXtremeGigabi +tEthernetDriver_BytesTotalPERsec) as ERWWSQLWEB_NetworkInterface_Broa +dcomNetXtremeGigabitEthernetDriver_BytesTotalPERsec, avg(ERWWSQLWEB_N +etworkInterface_MSTCPLoopbackinterface_BytesTotalPERsec) as ERWWSQLWE +B_NetworkInterface_MSTCPLoopbackinterface_BytesTotalPERsec, avg(ERWWS +QLWEB_NetworkInterface_BroadcomNetXtremeGigabitEthernetDriver_Current +Bandwidth) as ERWWSQLWEB_NetworkInterface_BroadcomNetXtremeGigabitEth +ernetDriver_CurrentBandwidth, avg(ERWWSQLWEB_NetworkInterface_MSTCPLo +opbackinterface_CurrentBandwidth) as ERWWSQLWEB_NetworkInterface_MSTC +PLoopbackinterface_CurrentBandwidth, avg(ERWWSQLWEB_PhysicalDisk_0CD_ +PCTDiskTime) as ERWWSQLWEB_PhysicalDisk_0CD_PCTDiskTime, avg(ERWWSQLW +EB_PhysicalDisk_Total_PCTDiskTime) as ERWWSQLWEB_PhysicalDisk_Total_P +CTDiskTime, avg(ERWWSQLWEB_PhysicalDisk_Total_AvgDiskQueueLength) as +ERWWSQLWEB_PhysicalDisk_Total_AvgDiskQueueLength, avg(ERWWSQLWEB_Proc +essor_Total_PCTProcessorTime) as ERWWSQLWEB_Processor_Total_PCTProces +sorTime FROM results [download] It looks OK to me, but then again, I'm a novice at SQL. I do a lot of preprocessing to the csv files before I run them through the perl script. I remove spaces, , , (, ), etc... the list above has all column names in it. I'm wondering if this should be looped? These csv files will average about 30 columns and upto 6000 rows. Doing all the average calculations in one command may be a little taxing on my system. PS. I don't need the data after the average is calculated. Just the column name and the average. Also, I don't need the first column, that can just go away.	[reply] [d/l]
Re^5: Database processing by davidrw (Prior) on Aug 06, 2005 at 03:19 UTC
You can tweak the `map` to be `map { "avg($_) as $_\n" }` to make it a little more legible, and then browse for errors. Did you try running the SQL directly in your db? What about a portion (e.g. w/just a few columns) of it? If you want to exclude columns, simply `grep` them out of @cols, or to just ditch the first one, do a `shift @cols;` Doing all the average calculations in one command may be a little taxing on my system. No, doing all the average calculations in many commands is what will tax your system. If you do it in separate statements, you're making the database go through all 6000 rows 30 different times. But if you do it in one statement, it only needs one pass.	[reply] [d/l] [select]
Re^6: Database processing by DrAxeman (Scribe) on Aug 06, 2005 at 13:22 UTC
Re^7: Database processing by davidrw (Prior) on Aug 06, 2005 at 13:35 UTC
Some notes below your chosen depth have not been shown here
Re^3: Database processing by jZed (Prior) on Aug 06, 2005 at 05:38 UTC
Your script works for me (maintainer of DBD::CSV and SQL::Statement) with a smaller dataset. Could you let me know which version of SQL::Statement you have? If you have anything ealier than 1.14, you should probably upgrade.	[reply]


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