Archive for April 30, 2014

| April 30, 2014
6 comments

New and Improved SQL Search By Red Gate

MCJJ_ALL

The Third Mission

In this installment of SQLCoOp, we are sharing our views on the newly released SQL Search 2.0 product by Red Gate. This amazing product is free to the public and can be downloaded here.

 

 

SQL Search is one of those amazing products that you just can’t believe they give away. While I always find it useful, I found it the most useful this year when I was getting to know a new (to me) database. Why? Because I could quickly and easily search all the databases for particular keywords. Below I’ve included some of my favorite Use Cases for using SQL Search.

Use Case 1: Where did I leave my TODO list?

One of the things I love to do is leave notes for myself in my SQL objects, but I’m not always good at remembering where those notes are. With SQL Search, I can find them easily by searching for the keyword TODO. Now I can go a step further and look for all the TODO’s that ALSO have my name.

 

I do this by using the AND operator to search for the two keywords todo and mstuewe. There are some special rules to note.

1. AND and it’s counter part OR are both case sensitive.

2. You can only use one at a time. I can have todo AND mtuewe AND 2014, but  I can’t have todo AND (mstuewe OR mickey). (Maybe in a future version – hint, hint.)

 

SNAGHTML341ae0

Use Case 2: How many databases do I need to look through?

George is new to the company and he needs to get to know how orders are stored in the database. He decides to use SQL Search to look at all the tables that have Order in their name. He is a bit shocked when he find out that there are hundreds of databases on the server and he is not sure which ones he should start with. George, luckily got some help from one of his co-workers Sarah. She told him he should start with three specific databases.

 

In previous versions of SQL Search, you could look through one database or all the databases. This could lead to a very long list of values if you have quite a few databases on your server. This is now a problem of the past. (And there was much rejoicing.)  Now you have the option of selecting only the database you are interested. You can even select the system tables which are all listed at the bottom  of the pull down window.

 

image

 

Use Case 3: Rolling the dice for a job.

imageLiz needs to find all the SQL objects that use the SalesOrder  table, but she isn’t interested in searching through tables and views. She does, however want to search through all the jobs first, and then she’ll take a look at triggers, stored procedures and functions.

 

I found this next new feature a huge bonus. Jobs are not something I’m looking through often, but now I have a way to search through them without any trouble. Simply, select Jobs.

 

I’m also very happy to be able to select ONLY the database objects I want to search through. For me this means I can ignore tables and views. (Yippee!)

Use Case 4: Getting to know your neighbors.

There have been some implicit conversion problems with some of the date fields in the database. Sarah has been tasked to verify that all fields that end in “DTS” are actually datetime data types and not date data types.

 

Red Gate has added the ability to see table definitions in the results pane. It’s a simple view of the table structure, but it beats having to go back to the Object Explorer to see the entire table structure. Now when you’re researching field data types, you can do it quickly and efficiently.

 

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Bonus Tips

Here are a few bonus tips that make SQL Search even more useful:

1. You can highlight all the rows in the grid, copy it, and paste it directly into Excel for further reference. This can be very helpful if you are changing all the objects in the list and you want to keep track of the original list. (This isn’t a new feature, but it is an awesome one to know about.)

2. They have improved the indexing of the database objects. This is GREAT  news. In the past, if you were expecting a modified object to appear on the list and it didn’t, you would have to close SSMS and restart it in order for the SQL objects to be properly re-indexed. You no longer need to do that. Just go to the Index menu item, and select Reindex.

3. Each of the columns in the grid can be sorted. This can be very handy if you want to deal with all the tables at one time, or a particular schema first.

 

image

Don’t Stop Yet

If you want to read more about the newly released SQL Search, don’t forget to check out these blog posts:

 

See you next time!!

 

On a SQL Collaboration Quest

Four SQL professionals gathered from the four corners of the world to share their SQL knowledge with each other and with their readers: Mickey Stuewe from California, USA, Chris Yates from Kentucky, USA, Julie Koesmarno from Canberra, Australia, and Jeffrey Verheul from Rotterdam, The Netherlands. They invite you to join them on their quest as they ask each other questions and seek out the answers in this collaborative blog series. Along the way, they will also include other SQL professionals to join in the collaboration.

 

Original Post: On a SQL Collaboration Quest

Category: Red Gate, SQL CoOp | Tags: , , , , ,
| April 14, 2014
2 comments

A Date At The End of The Month

MCJJ_ALLFour SQL professionals gathered from the four corners of the world to share their SQL knowledge with each other and with their readers: Mickey Stuewe from California, USA, Chris Yates from Kentucky, USA, Julie Koesmarno from Canberra, Australia, and Jeffrey Verheul from Rotterdam, The Netherlands. They invite you to join them on their quest as they ask each other questions and seek out the answers in this collaborative blog series. Along the way, they will also include other SQL professionals to join in the collaboration.

The Second Mission

This month our team is tackling windows functions. My particular take on the subject is near and dear to my reporting heart. How to get date ranges based on full months.

End of the Month

Dates tend to be a critical component of most metrics. They define the boundaries of the data. They create groups of data that can help with trending patterns and forecasting. The downside has always been the slicing and dicing of the date. For instance, if you need to group all the data by the last day of the month. You need to create an equation like this to determine the last day of the month:

DATEADD(day, -1, CONVERT(date, CONVERT(varchar(2), DATEPART(MONTH, DATEADD(month, 1, SomeDate))) + ‘-01-‘ + CONVERT(varchar(4), DATEPART(year, DATEADD(month, 1, SomeDate)))))

Or this:

DATEADD(month,1,DATEADD(DAY,-DATEPART(DAY,GETDATE()) – 1,GETDATE()))

In SQL2012 the EOMONTH() windows function was introduced. Now you just need to type this:

EOMONTH(SomeDate)

Performance Perks

Not only are you able to write a simpler equation that is easier to maintain and understand, but you get  some performance perks too.

I ran a query using both the “old way” and the “windows function way”  against a table I created with a million rows of data. The data set returns 561 rows of aggregated data. I aggregated all the data by using the last day of the month. I then looked at the execution plans and the statistics for these queries.

SELECT
     DATEADD(day, -1, CONVERT(date, CONVERT(varchar(2), DATEPART(MONTH, DATEADD(month, 1, SomeDate))) + '-01-' + 
          CONVERT(varchar(4), DATEPART(year, DATEADD(month, 1, SomeDate)))))
     ,COUNT(SomeDate)
FROM
     DemoProgramming.dbo.TestData AS td
GROUP BY
     DATEADD(day, -1, CONVERT(date, CONVERT(varchar(2), DATEPART(MONTH, DATEADD(month, 1, SomeDate))) + '-01-' + 
          CONVERT(varchar(4), DATEPART(year, DATEADD(month, 1, SomeDate)))))
ORDER BY
     DATEADD(day, -1, CONVERT(date, CONVERT(varchar(2), DATEPART(MONTH, DATEADD(month, 1, SomeDate))) + '-01-' + 
          CONVERT(varchar(4), DATEPART(year, DATEADD(month, 1, SomeDate)))))

SELECT
     EOMONTH(SomeDate)
     ,COUNT(SomeDate)
FROM
     DemoProgramming.dbo.TestData AS td
GROUP BY
     EOMONTH(SomeDate)
ORDER BY
     EOMONTH(SomeDate)

Findings

1. When breaking up a date to reconstruct it, you need to go back and forth between data types. The optimizer isn’t very fond of that. In fact you get a warning about the possibility of your cardinality being questionable. The EOMONTH() windows function doesn’t have this problem.

 

SQLCoop2_ExecutionPlan

 

2. The EOMONTH() windows function takes less CPU and can return values faster. For this particular execution, I received a 5.25 times faster CPU time and 3.5 times faster execution time.

I used the following code to turn on Statistics:

SET STATISTICS IO ON;
SET STATISTICS TIME ON;

 SQLCoop2_Statistics

 

But Wait! There’s More

This particular function has an additional (optional) parameter. The parameter will allow you to add/subtract months from the end of the month. Which means you can easily find the beginning of the month using this equation:

SELECT DATEADD(DAY, 1, EOMONTH(GETDATE(), -1)) as boMonth

This also allows you to easily create a one year range for the last 12 full months using these two equations:
SELECT
DATEADD(DAY, 1, EOMONTH(GETDATE(), -13)) AS StartDate
,EOMONTH(GETDATE(),-1) AS EndDate

Outside the Box

You are probably telling yourself that you can do everything I just showed you by grouping data by the Month() function. Yes, that is true, but you need to think outside the box for the application. What about those wonderful companies who think Months are not contstrained by Day 1 and Day 31? (You know who you are. They have business rules like, “the 5th day of the month”. Ah! Now we got something we can work with.

SELECT DATEADD(DAY, 5, EOMONTH(GETDATE(), -1)) as FifthDayOfMonth

Don’t Stop Yet

If you want to read more about Windows Functions, don’t forget to check out these blog posts:

To follow our quest for SQL knowledge through this collaborative project, follow the #SQLCoOp tag on Twitter.

See you next month!!

Original Post: On a SQL Collaboration Quest

Category: SQL CoOp | Tags: , , , ,
 
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