title
Creating a large table with random data for performance testing Part 61

description
In this video we will discuss about inserting large amount of random data into sql server tables for performance testing. In our next video, we will be using these tables, for performance testing of queries that uses subqueries and joins. Text version of the video http://csharp-video-tutorials.blogspot.com/2013/01/creating-large-table-with-random-data.html Healthy diet is very important both for the body and mind. If you like Aarvi Kitchen recipes, please support by sharing, subscribing and liking our YouTube channel. Hope you can help. https://www.youtube.com/channel/UC7sEwIXM_YfAMyonQCrGfWA/?sub_confirmation=1 Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-61-creating-large-table-with.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists

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{'title': 'Creating a large table with random data for performance testing Part 61', 'heatmap': [{'end': 428.398, 'start': 414.327, 'weight': 1}, {'end': 851.814, 'start': 839.194, 'weight': 0.899}, {'end': 973.378, 'start': 937.721, 'weight': 0.996}], 'summary': 'Demonstrates the process of inserting large amounts of random data into sql server tables for performance testing, including creating tables, inserting sample data, executing queries, and generating random numbers, with specific examples such as inserting 15,000 rows of random product sales data and creating a never-ending loop to generate random numbers between 1 and 5.', 'chapters': [{'end': 269.084, 'segs': [{'end': 64.09, 'src': 'embed', 'start': 0.049, 'weight': 2, 'content': [{'end': 1.871, 'text': 'Hello, welcome to Prism Technologies.', 'start': 0.049, 'duration': 1.822}, {'end': 2.792, 'text': 'I am Venkat.', 'start': 2.211, 'duration': 0.581}, {'end': 5.575, 'text': 'This is part 61 of SQL Server video series.', 'start': 3.092, 'duration': 2.483}, {'end': 12.703, 'text': "In this video, we'll discuss about inserting large amounts of random data into SQL Server tables for performance testing.", 'start': 5.996, 'duration': 6.707}, {'end': 19.771, 'text': "In the next video session, we'll use these large tables to test the performance of queries that uses joins and sub-queries.", 'start': 13.103, 'duration': 6.668}, {'end': 22.072, 'text': "Let's flip to SQL Server Management Studio.", 'start': 20.151, 'duration': 1.921}, {'end': 24.354, 'text': 'There are three parts to the SQL script.', 'start': 22.433, 'duration': 1.921}, {'end': 32.459, 'text': 'The first part will actually check if the tables exist If the tables exist, they will be dropped.', 'start': 24.714, 'duration': 7.745}, {'end': 35.662, 'text': 'And in the second part, we recreate those tables.', 'start': 32.82, 'duration': 2.842}, {'end': 40.745, 'text': 'And the final part will insert random sample data into those tables.', 'start': 36.222, 'duration': 4.523}, {'end': 44.568, 'text': "Let's see how we are checking for the existence of those tables and dropping them.", 'start': 41.105, 'duration': 3.463}, {'end': 53.523, 'text': "So to check the existence of tables, I'm using the system table called information underscore schema dot tables system table.", 'start': 45.088, 'duration': 8.435}, {'end': 55.664, 'text': "Let's see what this table contains.", 'start': 54.023, 'duration': 1.641}, {'end': 57.285, 'text': "So let's execute this query.", 'start': 55.724, 'duration': 1.561}, {'end': 59.887, 'text': 'Select star from information underscore schema dot tables.', 'start': 57.325, 'duration': 2.562}, {'end': 60.847, 'text': 'Now look at this.', 'start': 60.207, 'duration': 0.64}, {'end': 64.09, 'text': 'This query has returned me a list of table names.', 'start': 61.268, 'duration': 2.822}], 'summary': 'Part 61 of sql server video series discusses inserting large amounts of random data for performance testing.', 'duration': 64.041, 'max_score': 0.049, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI49.jpg'}, {'end': 182.836, 'src': 'embed', 'start': 154.262, 'weight': 1, 'content': [{'end': 158.083, 'text': 'Inserting sample data into these tables is very simple and straightforward.', 'start': 154.262, 'duration': 3.821}, {'end': 163.746, 'text': 'So, if you look at TBL products table, it has got three columns within that ID, name and description.', 'start': 158.323, 'duration': 5.423}, {'end': 166.727, 'text': 'ID column is the identity column.', 'start': 164.286, 'duration': 2.441}, {'end': 171.109, 'text': 'So when we are creating the table, we told ID is an identity column,', 'start': 166.747, 'duration': 4.362}, {'end': 178.173, 'text': "meaning when we insert a row into this table TBL products We don't have to supply a value for the identity column.", 'start': 171.109, 'duration': 7.064}, {'end': 182.836, 'text': 'We only need to supply values for name and description columns, which are of type n where cat.', 'start': 178.413, 'duration': 4.423}], 'summary': 'Inserting data into tbl products table with 3 columns is straightforward. id is an identity column, no need to supply its value.', 'duration': 28.574, 'max_score': 154.262, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI154262.jpg'}, {'end': 227.953, 'src': 'embed', 'start': 200.879, 'weight': 0, 'content': [{'end': 204.921, 'text': 'And how we are calculating the values for those names? Look at that.', 'start': 200.879, 'duration': 4.042}, {'end': 206.822, 'text': 'I am doing this in a while loop.', 'start': 205.421, 'duration': 1.401}, {'end': 214.086, 'text': 'So while we declare a variable of type integer at id and the id is initialized to 1.', 'start': 206.862, 'duration': 7.224}, {'end': 222.51, 'text': "So, while that ID is less than or equal to 10, 000, which means we are going to loop through this 10, 000 times, I'm going to insert 10,", 'start': 214.086, 'duration': 8.424}, {'end': 224.711, 'text': '000 products into TBL products table.', 'start': 222.51, 'duration': 2.201}, {'end': 227.953, 'text': 'So what we are doing, insert into TBL products values.', 'start': 225.032, 'duration': 2.921}], 'summary': 'Using a while loop to insert 10,000 products into tbl products table.', 'duration': 27.074, 'max_score': 200.879, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI200879.jpg'}], 'start': 0.049, 'title': 'Sql server performance testing', 'summary': 'Discusses inserting large amounts of random data into sql server tables for performance testing, covering the process of checking table existence, dropping tables, recreating tables, and inserting sample data while emphasizing the use of identity column and foreign key relationships.', 'chapters': [{'end': 269.084, 'start': 0.049, 'title': 'Sql server performance testing', 'summary': 'Discusses inserting large amounts of random data into sql server tables for performance testing, covering the process of checking table existence, dropping tables, recreating tables, and inserting sample data while emphasizing the use of identity column and foreign key relationships.', 'duration': 269.035, 'highlights': ['The chapter discusses inserting large amounts of random data into SQL Server tables for performance testing, covering the process of checking table existence, dropping tables, recreating tables, and inserting sample data.', "The existence of tables is checked using the system table 'information_schema.tables', and if they exist, they are dropped.", 'The second part of the script recreates the tables.', "The script then inserts random sample data into the tables using while loop to insert 10,000 products into the 'TBL_products' table.", "The 'TBL_products' table has an identity column 'ID' and 'name' and 'description' columns, with the 'ID' column being an identity column and the 'name' column having dynamically computed values."]}], 'duration': 269.035, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI49.jpg', 'highlights': ["The script inserts random sample data into the tables using while loop to insert 10,000 products into the 'TBL_products' table.", "The 'TBL_products' table has an identity column 'ID' and 'name' and 'description' columns, with the 'ID' column being an identity column and the 'name' column having dynamically computed values.", "The existence of tables is checked using the system table 'information_schema.tables', and if they exist, they are dropped.", 'The second part of the script recreates the tables.', 'The chapter discusses inserting large amounts of random data into SQL Server tables for performance testing, covering the process of checking table existence, dropping tables, recreating tables, and inserting sample data.']}, {'end': 639.242, 'segs': [{'end': 334.781, 'src': 'embed', 'start': 269.084, 'weight': 0, 'content': [{'end': 276.067, 'text': 'we are concatenating ID, which is going to be one the first time, and then another hardcoded string, description.', 'start': 269.084, 'duration': 6.983}, {'end': 279.289, 'text': 'okay, so this is going to be the value for description column.', 'start': 276.067, 'duration': 3.222}, {'end': 284.371, 'text': 'this is going to the value for name column and we have this insert statement inside this while loop.', 'start': 279.289, 'duration': 5.082}, {'end': 286.784, 'text': "So it's going to run 10, 000 times.", 'start': 285.163, 'duration': 1.621}, {'end': 287.565, 'text': 'And look at this.', 'start': 287.144, 'duration': 0.421}, {'end': 288.545, 'text': 'We are printing ID.', 'start': 287.605, 'duration': 0.94}, {'end': 294.329, 'text': 'This is for tracking the progress when this query is running.', 'start': 288.605, 'duration': 5.724}, {'end': 297.111, 'text': 'And finally, we are incrementing the value by 1.', 'start': 294.849, 'duration': 2.262}, {'end': 298.032, 'text': 'This is most important.', 'start': 297.111, 'duration': 0.921}, {'end': 299.533, 'text': 'Otherwise, the loop will never end.', 'start': 298.072, 'duration': 1.461}, {'end': 303.875, 'text': 'At some point of time, we want the ID to be 10, 000 so that the loop can end.', 'start': 299.893, 'duration': 3.982}, {'end': 306.097, 'text': 'Otherwise, this will become a never-ending loop.', 'start': 303.975, 'duration': 2.122}, {'end': 309.438, 'text': "Okay, so let's go ahead and run this query and see what happens.", 'start': 306.657, 'duration': 2.781}, {'end': 315.679, 'text': 'So execute query, executing query, look at the messages, look at the rows are being inserted.', 'start': 309.958, 'duration': 5.721}, {'end': 320.04, 'text': 'Okay, 5000, 6000, the query has just completed successfully.', 'start': 316.079, 'duration': 3.961}, {'end': 323.161, 'text': 'So when we scroll down, you should see 10, 000 rows.', 'start': 320.42, 'duration': 2.741}, {'end': 327.001, 'text': "Now let's select data and see if it is present.", 'start': 323.481, 'duration': 3.52}, {'end': 330.162, 'text': 'So select star from TBL products, press F5, look at that.', 'start': 327.081, 'duration': 3.081}, {'end': 334.781, 'text': 'Here I get 10, 000 rows in the status bar and look at the name and description.', 'start': 330.578, 'duration': 4.203}], 'summary': 'Concatenated ids and descriptions, inserted 10,000 rows, and verified successful completion.', 'duration': 65.697, 'max_score': 269.084, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI269084.jpg'}, {'end': 441.922, 'src': 'heatmap', 'start': 414.327, 'weight': 1, 'content': [{'end': 417.19, 'text': "It can't fall outside of those values.", 'start': 414.327, 'duration': 2.863}, {'end': 422.534, 'text': "That's because it's a foreign key to the ID column in TBL products table.", 'start': 417.25, 'duration': 5.284}, {'end': 428.398, 'text': 'Okay, so to understand this, all you have to do is, I mean, we are going to use again while loop.', 'start': 423.596, 'duration': 4.802}, {'end': 429.178, 'text': 'Look at that.', 'start': 428.738, 'duration': 0.44}, {'end': 435.44, 'text': "So while, and I'm going to insert 15, 000 rows because I might have sold one product maybe 10 times.", 'start': 429.618, 'duration': 5.822}, {'end': 440.822, 'text': "It's possible, right? So we're going to have 15, 000 rows within TBL product sales table.", 'start': 435.56, 'duration': 5.262}, {'end': 441.922, 'text': 'Look at this again.', 'start': 441.202, 'duration': 0.72}], 'summary': 'Foreign key ensures data integrity by linking to tbl products. 15,000 rows inserted for multiple product sales.', 'duration': 27.595, 'max_score': 414.327, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI414327.jpg'}, {'end': 478.969, 'src': 'embed', 'start': 453.817, 'weight': 1, 'content': [{'end': 462.361, 'text': 'We are using round and rand functions to generate a random product ID, random unit price and random quantity sold.', 'start': 453.817, 'duration': 8.544}, {'end': 466.363, 'text': "Let's see how we are generating and if you remember, we spoke about this.", 'start': 462.621, 'duration': 3.742}, {'end': 473.826, 'text': 'the product ID should be a random number between 1 and 10, 000, whereas unit, price and quantity sold should be a random number between 1 and 10..', 'start': 466.363, 'duration': 7.463}, {'end': 478.969, 'text': "Now let's see how to generate a random number using rand and round functions and that's very simple to do.", 'start': 473.826, 'duration': 5.143}], 'summary': 'Using round and rand functions to generate random product id, unit price, and quantity sold within specified ranges.', 'duration': 25.152, 'max_score': 453.817, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI453817.jpg'}, {'end': 629.103, 'src': 'embed', 'start': 604.372, 'weight': 4, 'content': [{'end': 610.335, 'text': 'Now I should always get a number between 1, 2, 3, 4 and 5, but then I have decimal places.', 'start': 604.372, 'duration': 5.963}, {'end': 612.916, 'text': "We'll get rid of those decimal places in just a bit.", 'start': 610.435, 'duration': 2.481}, {'end': 616.698, 'text': 'So how to get rid of those decimal places? Use the round function.', 'start': 613.296, 'duration': 3.402}, {'end': 618.398, 'text': "That's what the round function is for.", 'start': 616.978, 'duration': 1.42}, {'end': 620.279, 'text': "So I'm going to use the round function.", 'start': 618.739, 'duration': 1.54}, {'end': 627.923, 'text': 'So which is the number I want to round? I want to round this number, whatever is returned by this expression.', 'start': 620.92, 'duration': 7.003}, {'end': 629.103, 'text': 'I want to round that number.', 'start': 628.063, 'duration': 1.04}], 'summary': 'Using the round function to remove decimal places from numbers.', 'duration': 24.731, 'max_score': 604.372, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI604372.jpg'}], 'start': 269.084, 'title': 'Data insertion and query execution', 'summary': 'Covers concatenating id and hardcoded string for description and executing an insert statement inside a while loop that runs 10,000 times, as well as demonstrating executing queries and inserting 15,000 rows of random product sales data using round and rand functions.', 'chapters': [{'end': 309.438, 'start': 269.084, 'title': 'Concatenating id in while loop', 'summary': 'Discusses concatenating id and hardcoded string for description and executing an insert statement inside a while loop which runs 10,000 times to track progress and increment the value to end the loop.', 'duration': 40.354, 'highlights': ['Executing an insert statement inside a while loop which runs 10,000 times to track progress and increment the value by 1 to end the loop.', 'The importance of incrementing the value by 1 to ensure the loop ends, with the aim of reaching the ID value of 10,000.', 'Concatenating ID and a hardcoded string for description to be inserted into columns.']}, {'end': 639.242, 'start': 309.958, 'title': 'Executing queries and inserting random data', 'summary': 'Demonstrates executing queries and inserting random data into a database table, generating 15,000 rows of random product sales data using round and rand functions, and rounding random numbers between 1 and 5 using the round function.', 'duration': 329.284, 'highlights': ['Generating 15,000 rows of random product sales data using round and rand functions', 'Rounding random numbers between 1 and 5 using the round function', 'Executing queries and inserting random data into a database table']}], 'duration': 370.158, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI269084.jpg', 'highlights': ['Executing an insert statement inside a while loop which runs 10,000 times to track progress and increment the value by 1 to end the loop.', 'Generating 15,000 rows of random product sales data using round and rand functions', 'The importance of incrementing the value by 1 to ensure the loop ends, with the aim of reaching the ID value of 10,000.', 'Concatenating ID and a hardcoded string for description to be inserted into columns.', 'Rounding random numbers between 1 and 5 using the round function', 'Executing queries and inserting random data into a database table']}, {'end': 1036.885, 'segs': [{'end': 689.524, 'src': 'embed', 'start': 639.623, 'weight': 2, 'content': [{'end': 645.928, 'text': "Just to make sure that it's working according to our expectations, let's put in a simple testing code for this.", 'start': 639.623, 'duration': 6.305}, {'end': 647.149, 'text': 'I want to quickly test this.', 'start': 645.988, 'duration': 1.161}, {'end': 650.192, 'text': "So I'm going to use a while loop here.", 'start': 647.549, 'duration': 2.643}, {'end': 655.53, 'text': "while, let's say, 1 is equal to 1.", 'start': 652.648, 'duration': 2.882}, {'end': 659.392, 'text': 'Just to convince you guys, it always generates numbers between 1 and 5.', 'start': 655.53, 'duration': 3.862}, {'end': 663.094, 'text': 'So while 1 is equal to 1, that means this condition will always be true.', 'start': 659.392, 'duration': 3.702}, {'end': 664.995, 'text': "I'm creating a never-ending loop here.", 'start': 663.214, 'duration': 1.781}, {'end': 667.576, 'text': 'So while 1 is equal to 1, begin, end.', 'start': 665.775, 'duration': 1.801}, {'end': 673.699, 'text': 'So what do I want to do? I want to generate this random number in an infinite loop.', 'start': 667.616, 'duration': 6.083}, {'end': 675.9, 'text': 'So generate random number.', 'start': 674.7, 'duration': 1.2}, {'end': 680.523, 'text': "So to hold that number, what I'm going to do, I'm going to declare a variable.", 'start': 676.141, 'duration': 4.382}, {'end': 682.719, 'text': 'So declare at rand.', 'start': 681.138, 'duration': 1.581}, {'end': 683.94, 'text': "I'm going to say integer.", 'start': 682.739, 'duration': 1.201}, {'end': 686.562, 'text': "So let's take that variable.", 'start': 684.68, 'duration': 1.882}, {'end': 689.524, 'text': "So I'm saying at random.", 'start': 688.343, 'duration': 1.181}], 'summary': 'Testing code generates random numbers infinitely.', 'duration': 49.901, 'max_score': 639.623, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI639623.jpg'}, {'end': 867.687, 'src': 'heatmap', 'start': 839.194, 'weight': 1, 'content': [{'end': 841.614, 'text': 'We got 4, 4, 2, 3.', 'start': 839.194, 'duration': 2.42}, {'end': 842.935, 'text': 'At some point of time, it ended.', 'start': 841.615, 'duration': 1.32}, {'end': 844.796, 'text': 'Now, let me execute that.', 'start': 843.555, 'duration': 1.241}, {'end': 845.857, 'text': 'Look at that.', 'start': 845.196, 'duration': 0.661}, {'end': 846.777, 'text': '2, 5, and then error.', 'start': 846.197, 'duration': 0.58}, {'end': 848.832, 'text': "So it's working.", 'start': 848.151, 'duration': 0.681}, {'end': 851.814, 'text': "It's only generating the numbers between 1 and 5.", 'start': 849.112, 'duration': 2.702}, {'end': 854.316, 'text': 'So our script is working as expected.', 'start': 851.814, 'duration': 2.502}, {'end': 859.06, 'text': 'So we have just seen how to generate random numbers between a given range.', 'start': 854.617, 'duration': 4.443}, {'end': 867.687, 'text': 'We are declaring two variables, initializing them to 1 and 5, and it is this simple piece of code which generates random number between a given range.', 'start': 859.421, 'duration': 8.266}], 'summary': 'Generated random numbers between 1 and 5, script working as expected', 'duration': 28.493, 'max_score': 839.194, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI839194.jpg'}, {'end': 962.689, 'src': 'embed', 'start': 937.721, 'weight': 0, 'content': [{'end': 946.086, 'text': 'And finally, what we are doing? We are having a while loop here, which starts at 1 and loops through 15, 000 times.', 'start': 937.721, 'duration': 8.365}, {'end': 948.267, 'text': "So we're going to have 15, 000 records inserted.", 'start': 946.106, 'duration': 2.161}, {'end': 957.044, 'text': 'And obviously, what is this script doing here? It is generating a random product ID, random unit price, and random quantity sold.', 'start': 948.647, 'duration': 8.397}, {'end': 962.689, 'text': "It's exactly the same thing that we have seen just now, how to generate a random number.", 'start': 957.104, 'duration': 5.585}], 'summary': 'A while loop generates 15,000 records with random product ids, unit prices, and quantities.', 'duration': 24.968, 'max_score': 937.721, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI937721.jpg'}, {'end': 973.378, 'src': 'heatmap', 'start': 937.721, 'weight': 0.996, 'content': [{'end': 946.086, 'text': 'And finally, what we are doing? We are having a while loop here, which starts at 1 and loops through 15, 000 times.', 'start': 937.721, 'duration': 8.365}, {'end': 948.267, 'text': "So we're going to have 15, 000 records inserted.", 'start': 946.106, 'duration': 2.161}, {'end': 957.044, 'text': 'And obviously, what is this script doing here? It is generating a random product ID, random unit price, and random quantity sold.', 'start': 948.647, 'duration': 8.397}, {'end': 962.689, 'text': "It's exactly the same thing that we have seen just now, how to generate a random number.", 'start': 957.104, 'duration': 5.585}, {'end': 969.155, 'text': 'And then we are inserting those values into this table.', 'start': 964.07, 'duration': 5.085}, {'end': 973.378, 'text': 'And we are printing the counter, incrementing the counter by 1.', 'start': 969.975, 'duration': 3.403}], 'summary': 'Generating and inserting 15,000 random records into a table using a while loop.', 'duration': 35.657, 'max_score': 937.721, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI937721.jpg'}], 'start': 639.623, 'title': 'Random number generation and data insertion', 'summary': 'Covers the creation of a never-ending loop to generate random numbers between 1 and 5, and the insertion of 15,000 records into a table with random product ids, unit prices, and quantities.', 'chapters': [{'end': 689.524, 'start': 639.623, 'title': 'Testing never-ending random number generation', 'summary': 'Discusses the creation of a never-ending loop to generate random numbers between 1 and 5 using a while loop and an infinite loop, aiming to hold the random number in an integer variable.', 'duration': 49.901, 'highlights': ['Creation of never-ending loop to generate random numbers', 'Aim to hold the random number in an integer variable', 'Use of while loop for testing']}, {'end': 1036.885, 'start': 689.544, 'title': 'Generating random numbers and inserting data', 'summary': "Demonstrates generating random numbers between 1 and 5, ensuring the script's correctness, and inserting 15,000 records into a table with random product ids, unit prices, and quantities, successfully completing the task.", 'duration': 347.341, 'highlights': ["It demonstrates generating random numbers between 1 and 5, ensuring the script's correctness, and breaking out of the loop if an error occurs.", 'It successfully inserts 15,000 records into the table with random product IDs, unit prices, and quantities.', 'It demonstrates declaring and initializing variables for product IDs, unit prices, and quantities, and includes a while loop to insert 15,000 records.']}], 'duration': 397.262, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RizVYigF4GI/pics/RizVYigF4GI639623.jpg', 'highlights': ['Successfully inserts 15,000 records into the table with random product IDs, unit prices, and quantities.', 'Demonstrates generating random numbers between 1 and 5 and breaking out of the loop if an error occurs.', 'Creation of never-ending loop to generate random numbers.', 'Use of while loop for testing.', 'Aim to hold the random number in an integer variable.', 'Demonstrates declaring and initializing variables for product IDs, unit prices, and quantities, and includes a while loop to insert 15,000 records.']}], 'highlights': ['Successfully inserts 15,000 records into the table with random product IDs, unit prices, and quantities.', 'Generating 15,000 rows of random product sales data using round and rand functions', "The script inserts random sample data into the tables using while loop to insert 10,000 products into the 'TBL_products' table.", "The 'TBL_products' table has an identity column 'ID' and 'name' and 'description' columns, with the 'ID' column being an identity column and the 'name' column having dynamically computed values.", "The existence of tables is checked using the system table 'information_schema.tables', and if they exist, they are dropped.", 'The second part of the script recreates the tables.', 'Demonstrates generating random numbers between 1 and 5 and breaking out of the loop if an error occurs.', 'Creation of never-ending loop to generate random numbers.', 'Executing an insert statement inside a while loop which runs 10,000 times to track progress and increment the value by 1 to end the loop.', 'Executing queries and inserting random data into a database table']}