1. WinGapSQL and GIS Mark Lovett & Rusty Scoven
2015 WinGap Conference
WinGapSQL and GIS
Mark Lovett & Rusty Scoven

2. 2018 V3 (DBF) Official Support Ends

3. Managing GIS data using database connections
ArcMap for Desktop Basic License
SSMS (Sequel Server Management Studio)

4. ArcMap Query Layer
Stand alone table created from a connected database
Provides for live updates from the database directly to the map project
Must have a database connection in order to be created
Utilizes SQL syntax in order to create the stand alone table
Works much like a SQL view query
Only exists within the map project it was created in
Are read only
Editable when accessed via certain types of services/licenses

6. From the catalogue tree create a database connection
Double click Add Database Connection

7. Database Connection window will appear and be blank
Must add the SQL Instance and the Authentication Type
The Instance can be found within SSMS (see next slide)
The Authentication Type for Windows Authentication will be Operating system authentication
Those users that use password protected authentication will select Database Authentication and enter the user name and password

8. SQL Instance name as seen from SSMS

9. Back to the Database Connection window
The Database can either be keyed or as a test to see if you entered the correct Instance and Authentication Type, you can click the drop down arrow and select the database you wish to query from.
The Query Layer will only pull from that database

10. Once the database connection is established it will display in the Catalogue tree
You can rename it by right clicking on it if you prefer or take the default
It will default to being disconnected (appear with a red x beside it)
To connect it double click the connection you created (red x will disappear and a + will appear to the left

11. Once connected you will be able to see all of the WinGap dbo tables within the database
These dbo tables cannot and should not be renamed, deleted, copied, cut, changed or manipulated in any shape form or fashion
Any manipulation of these tables could result in WinGap SQL malfunctioning
If you are an individual that is click happy DO NOT click the + symbol

12. To create the Query Layer Go to:
File>>>>>Add Data>>>>>Add Query Layer

13. The New Query Layer window opens

14. Select your database connection by clicking the drop down arrow
A list of all the dbo tables within the database will appear

15. First give the query layer a name on the Name line
As for the query, a couple of ways to skin this cat
You can build the query by navigating through the list of dbo tables, selecting the table and then selecting the field names from the columns box
OR you can use SSMS to build your query and copy and paste

18. After you have built your query you can click Validate to ensure it is correct and then click Finish

19. After you click finish the new Query Layer table will appear in the Table of Contents window

20. To view the table, right click on the table, and select Open

21. The attribute table will display showing the columns you selected in the query

22. The table will update as changes are made in WinGap SQL
Example is Realkey 2, lets remove the Homestead Code in WinGap SQL

25. Once the change is made in WinGap SQL you must refresh the data so that it can update in ArcMap
Refreshing the data can be done in two ways, closing the table and reopening it OR by selecting Reload Cache from the table while it is open

26. After performing either option to refresh the table will update

27. The Query Layer can be edited or changed to fit the user’s needs
To edit the Query Layer, right click on the table, select properties

28. From the Source tab select Change Query

29. The Edit Query Layer will open
You can now add or subtract from the original query

32. The Query Layer also allows for pulling data from multiple tables using SQL join commands
For these types of queries I prefer SSMS but you can use the query window within ArcMap as well

35. Major benefit in using Query Layer is on the fly updates from WinGAP SQL
Another PLUS is not having to maintain a bunch of fields within shapefile or geodatabase
The Query Layer can be joined to spatial layers and as updates are made in WinGap SQL they will be reflected in the map

36. Attribute table from parcel data

37. To perform the join, right click on the shapefile, select Joins and Relates, the select Join

38. Join Data window appears
Select the primary key to join the data on, click OK

39. Message below may appear
Select Perform Join Now Without Index

40. Join occurs
Open attribute table to review the joined data

41. For the update example lets look at Realkey 5723
Acreage discrepancy requires an update

44. Refresh the attribute table using the same method

45. Table updates

46. Can be used with symbology and thematic mapping updates
To use symbology, right click on the layer you want to symbolize, then click properties

47. The Layer Properties window will appear
Click on the Symbology tab, select categories, then select the field you wish to symbolize on followed by add all values

48. The example I am using is the Taxdistrict field from WinGapSQL
The example shows a parcel that appears to be in the wrong Tax District

53. Click the refresh button from the map to see the update.

54. Using a SQL View with ARCGIS

55. SQL Views
Creating SQL Views
Joining SQL views with ARCGIS

56. Query from SSMS: Lets say you have a complex query, and you would like to use those results with your parcel data
This a query that compares data from two different data years

57. CREATING A VIEW IN SIMPLE FORM
CREATE VIEW view_name AS
SELECT column_name(s)
FROM table_name
WHERE condition

58. CREATING A VIEW FROM THE SSMS QUERY
CREATE VIEW view_name AS
SELECT column_name(s)
FROM table_name
WHERE condition

59. Where does my VIEW live?

60. Adding the VIEW to ARCGIS

61. Joining the View to the Parcel Layer

62. Now Lets Display the Queried Parcels

63. Visual display of our data may indicate incorrect Neighborhood changes

64. Using joined data for analysis

65. Example: You want to determine if parcels are more valuable within a one mile radius of a school

66. In our example you have joined a Query Layer or a View to your Parcel Layer

67. Select by Location from PARCELS that are within a distance of 5,280 feet (1 mile) from SCHOOLS

68. Now you have selected all of the parcels within a one mile radius of the schools

69. Now you have your selection, lets move it to a usable report

70. Now you have a usable spreadsheet to use for analysis

71. What if you have a spreadsheet of information that you would like to Map and Analyze with your Parcel Data?

72. Example: You have been given a list of parcels that should have been combined. You want to determine if these combinations have been completed.

73. First you will add your Excel data to ARCGIS

74. Next step: Joining to our Parcel Layer

75. Now that you have joined the combination list to the parcel data you can select parcels by attributes from the Excel data.
Using SELECT BY ATTRIBUTES You can select any parcel that was supposed to be Deleted as a result of a combination by selecting any parcel that has a Realkey from the Deleted Parcel

76. Now you have a visual representation of the parcels that should have been deleted per a combination with another parcel

77. WinGAPSQL + ARCGIS = Time Saving Analysis
This is just a sampling of the many things that can be accomplished by using these two powerful tools!
WinGAPSQL + ARCGIS = Time Saving Analysis