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These are the some of advantages of gears. You can achieve speed reduction even in small range which is cannot achieves by using chain or belt drives. Gears are well capable to huge amount of power transmission as compared to chain and belt drives. motor) and driven shaft means the rotation caused due to motion of drive shaft (It is drive by drive shaft). Note: Drive shaft means which is directly connected to drive machine (e.g. Gear box is very compact in construction due the relatively small distance between drive and driven shaft. The power transmission is very effective which gives positive drive and have constant velocity ratio. Gear or Gears are toothed wheels which helps to transmit power and motion of one shaft to another by means of engagement of its teeth. Checkout Best SolidWorks Training Materials here.
#CREATE BACKUP OF SOLIDWORKS TOOLBOX HOW TO#
Also see How to make Spring 3D Modelīefore going to this solidworks tutorial, you should have some knowledge about the gear, its types and major uses in engineering. You will see how to use Solidworks features and sketch tools in simple manner to create Spur gear 3D model. By doing this exercise, you will learn Solidworks features application like Extrude Boss, Extrude cut, Straight line, Center line, Axis and Circular Pattern. It contains the both video and step by step pictorial explanations for creating different types of gear (Spur gear, helical gear bevel gear etc) in the graphics area of this CAD software. (File_Exists, file_is_a_directory, parent_directory_exists)ĮXEC _fileexist EXISTS (SELECT 1 FROM #xp_fileexist_Results WHERE File_is_a_Directory = 1) -if exists PRINT 'Directory Exists'ĮLSE -if directory doesn't exist, attempt to create itĮXEC xp_create_subdir another existance check to make sure that the directory was actually createdĮXEC to SolidWorks tutorials for beginners and in this Solidworks exercises, you are going to learn to make gear 3D model. IF OBJECT_ID('tempdb.#xp_fileexist_Results') IS NOT NULL DROP TABLE #xp_fileexist_Results It should be easy enough to alter the script and incorporate it into your own backup routines.ĭECLARE VARCHAR(50) = 'O:\SQLUndercover\Backups' The script will first check for the existence of the path fed into If that path exists then I’ll report so but if that path doesn’t exist then it’ll attempt to create it. So now that we’ve got to know xp_fileexist and xp_create_subdir we can get to the bit that you’ve all been waiting for, the script that’s going to check if our backup file path actually exists and if it doesn’t then it’ll create it for you. The nice thing about that proc is that it doesn’t just create a single folder but can also create a whole hirachy. Lets now run xp_create_subdir to create a SQLUndercover2 folder…ĮXEC xp_create_subdir 'O:\SQLBackups\SQLUndercover2'Īnd there we have it, that’s how you can create a new directory using SQL Server. As you can see below, the only folder that we’ve got in O:\SQLBackups is SQLUndercover… So what do we do if the directory doesn’t exist? In that case we can call on another friend of ours, xp_create_subdir and he does exactly what it says on the tin.
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Just for the sake of argument, lets just pass in a non-existent path…ĮXEC xp_fileexist 'O:\SQLBackups\SQLUndercover2' Well, that’s cool! We can see that the path does actually exist. OK how about checking if a directory exists, that’s what we’re interested in afterall…ĮXEC xp_fileexist 'O:\SQLBackups\SQLUndercover' We’ll have a go at passing in a file that we know exists…ĮXEC xp_fileexist 'O:\SQLBackups\SQLUndercover\SQLUndercover_12092017.bak'Īnd there we can see from the result set, the string we passed in is actually a file. Even though the proc is called, xp_ fileexist it can also check that a path and even if the parent directory exists. To do that, we’re going to enlist the help of xp_fileexist. The first thing that we’re going to need to do is check that SQL Server can actually see the path that we want to write too. There are a couple of undocumented procedures that can help us here. Being undocumented means that Microsoft can mess around with them whenever they like so be a little careful of using them in production. UNDOCUMENTED PROCEDURE WARNING: We’re heading into the badlands of undocumented procedures, folks. If you don’t care about the explanations and just want to get to the meat then scroll down the page for the script. Where do you send your backup files? Here at SQLUndercover, we like all our databases to have their own backup folder, it just makes it nice and easy to find things.īut what happens if someone creates a new database but doesn’t create a backup folder for that database? Unless you’re doing some kind of check on the file path, the backup is likely to try writing the file to a path that doesn’t exist and will fail.