I try to calculate the distance between two objects.
declare #p1 geography
declare #p2 geography
SELECT #p1 = WKT from tbl_1 where loc = "school"
SELECT #p2 = WKT from tbl_2 where loc = "school"
select round(#p1.STDistance(#p2)/1000,0) Distance_KM
But i get an error for the column loc
Invalid column name
This column exists and data type is geography.
Column WKT is populated using:
UPDATE [dbo].[lbl_1]
SET [WKT] = geography::STPointFromText('POINT(' + CAST([Longitude] AS VARCHAR(20)) + ' ' + CAST([Latitude] AS VARCHAR(20)) + ')', 4326)
GO
What's wrong ??
Your string literal is incorrect.
For SQL, you want single quotes, iow 'school' and not "school".
SQL treats it as a column and not a string literal.
Related
I'm creating a grid that has two columns: Name and HotelId. The problem is that data for this grid should be sent with a single parameter of VARCHAR type and should look like this:
#Parameter = 'Name1:5;Name2:10;Name3:6'
As you can see, the parameter contains Name and a number that represents ID value and you can have multiple such entries, separated by ";" symbol.
My first idea was to write a query that creates a temp table that will have two columns and populate it with data from the parameter.
How could I achieve this? It seems like I need to split the parameter two times: by the ";" symbol for each row and then by ":" symbol for each column.
How should I approach this?
Also, if there is any other more appropriate solution, I'm open to suggestions.
First Drop the #temp table if Exists...
IF OBJECT_ID('tempdb..#temp', 'U') IS NOT NULL
/*Then it exists*/
DROP TABLE #temp
Then create #temp table
CREATE TABLE #temp (v1 VARCHAR(100))
Declare all the #Paramter....
DECLARE #Parameter VARCHAR(50)
SET #Parameter= 'Name1:5;Name2:10;Name3:6'
DECLARE #delimiter nvarchar(1)
SET #delimiter= N';';
Here, Inserting all #parameter value into #temp table using ';' separated..
INSERT INTO #temp(v1)
SELECT * FROM(
SELECT v1 = LTRIM(RTRIM(vals.node.value('(./text())[1]', 'nvarchar(4000)')))
FROM (
SELECT x = CAST('<root><data>' + REPLACE(#Parameter, #delimiter, '</data><data>') + '</data></root>' AS XML).query('.')
) v
CROSS APPLY x.nodes('/root/data') vals(node)
)abc
After inserting the value into #temp table..get all the value into ':' seprated...
select Left(v1, CHARINDEX(':', v1)-1) as Name , STUFF(v1, 1, CHARINDEX(':', v1), '') as HotelId FROM #temp
Then you will get this type of Output
I'm trying to return all the rows from [store] with distance of less than 10 miles. Table [Store] has a column of type Geography.
I understand how to find the distance between two specific points, something like this:
declare #origin geography
select #origin = geography::STPointFromText('POINT(' + CAST(-73.935242 AS
VARCHAR(20)) + ' ' + CAST(40.730610 AS VARCHAR(20)) + ')', 4326)
declare #destination geography
select #destination = geography::STPointFromText('POINT(' + CAST(-93.732666 AS VARCHAR(20)) + ' ' + CAST(30.274096 AS VARCHAR(20)) + ')', 4326)
select #origin.STDistance(#destination)/ 1609.344 as 'distance in miles'
I'm having trouble applying this logic to a SELECT statement. Instead of getting the distance between #origin and #destination, I would like to get the distance in miles between #origin and store.Geolocation for all rows.
The STDistance method, used from one instance of Geography and applied to another, returns the distance between the two points. It can be used with variables, e.g. #Origin.STDistance( #Destination ), columns or a combination thereof, e.g. to find all of the stores within 10 miles of a particular #Origin:
select *
from Store
where #Origin.STDistance( Store.Geolocation ) < 1609.344 * 10.0;
Note: As BenThul pointed out, spatial index handling is a bit fickle. An STDistance compared to a constant is SARGable: #Origin.STDistance( Store.Geolocation ) < 1609.344 * 10.0, but this mathematically equivalent expression is not: #Origin.STDistance( Store.Geolocation ) / 1609.344 < 10.0. This "feature" is documented here.
I have a table called Xref.
Made up of columns ShaftecNo, CompNo, CompName.
I am trying to write a pivot query that displays [ShaftecNo],[CompNo] and then [CompName] as columns). Resulting in the following format
Code used in my stored procedure is as follows.
declare #sql nvarchar(max);
-- generate the column names
select #sql = coalesce(#sql + ',', '') + QuoteName([CompName])
from (select DISTINCT CompName from [Xrefs] WHERE CompName LIKE '[a-z]%') T;
-- replace the column names into the generic PIVOT form
set #sql = REPLACE('
select ShaftecNo, :columns:
from (SELECT ShaftecNo,CompNo,CompName FROM Xrefs INNER JOIN Product ON Xrefs.ShaftecNo COLLATE Latin1_General_CI_AS = Product.KeyCode) p
pivot (max(CompNo) for CompName in (:columns:)) as pv',
':columns:', #sql)
-- execute for the results
exec (#sql)
Please note, the LIKE command used will work if i change it to [a-c] ( only [CompName]'s that starts with a-c range) if i do a larger range like [a-r] it errors.
Msg 105, Level 15, State 1, Line 4
Unclosed quotation mark after the character string 'ALFAROME'.
Msg 102, Level 15, State 1, Line 4
Incorrect syntax near 'ALFAROME'.
The errors change for different ranges. If i take the like out completely the the query works BUT it misses out company names (i.e .Brake Engineering).
Can anyone help
It sounds like your CompName field has values that have contain single quotes, so you will need to remove/replace them when building your #sql value:
declare #sql nvarchar(max);
-- generate the column names
select #sql = coalesce(#sql + ',', '') + QuoteName(replace([CompName],'''',''))
from (select DISTINCT CompName from [Xrefs] WHERE CompName LIKE '[a-z]%') T;
-- replace the column names into the generic PIVOT form
set #sql = REPLACE('
select ShaftecNo, :columns:
from (SELECT CompNo,replace(CompName,'''''''','''') as CompName FROM a INNER JOIN Product ON Xrefs.ShaftecNo COLLATE Latin1_General_CI_AS = Product.KeyCode) p
pivot (max(CompNo) for CompName in (:columns:)) as pv',
':columns:', #sql)
-- execute for the results
exec (#sql)
Thanks for all your help. The PRINT #SQL command worked like a dream. (Thank you Nick.McDermaid) .
The problem was a random unicode ascii character - 160. Which i had to get by using ...
SELECT distinct Compname, ASCII(SUBSTRING(Compname,LEN(Compname)-1,LEN(Compname))) from [Xrefs_Temp].
Then i replaced it with blanks and it worked.
Thanks again
I've created a full-text indexed column on a table.
I have a stored procedure to which I may pass the value of a variable "search this text". I want to search for "search", "this" and "text" within the full-text column. The number of words to search would be variable.
I could use something like
WHERE column LIKE '%search%' OR column LIST '%this%' OR column LIKE '%text%'
But that would require me to use dynamic SQL, which I'm trying to avoid.
How can I use my full-text search to find each of the words, presumably using CONTAINS, and without converting the whole stored procedure to dynamic SQL?
If you say you definitely have SQL Table Full Text Search Enabled, Then you can use query like below.
select * from table where contains(columnname,'"text1" or "text2" or "text3"' )
See link below for details
Full-Text Indexing Workbench
So I think I came up with a solution. I created the following scalar function:
CREATE FUNCTION [dbo].[fn_Util_CONTAINS_SearchString]
(
#searchString NVARCHAR(MAX),
#delimiter NVARCHAR(1) = ' ',
#ANDOR NVARCHAR(3) = 'AND'
)
RETURNS NVARCHAR(MAX)
AS
BEGIN
IF #searchString IS NULL OR LTRIM(RTRIM(#searchString)) = '' RETURN NULL
-- trim leading/trailing spaces
SET #searchString = LTRIM(RTRIM(#searchString))
-- remove double spaces (prevents empty search terms)
WHILE CHARINDEX(' ', #searchString) > 0
BEGIN
SET #searchString = REPLACE(#searchString,' ',' ')
END
-- reformat
SET #searchString = REPLACE(#searchString,' ','" ' + #ANDOR + ' "') -- replace spaces with " AND " (quote) AND (quote)
SET #searchString = ' "' + #searchString + '" ' -- surround string with quotes
RETURN #searchString
END
I can get my results:
DECLARE #ftName NVARCHAR (1024) = dbo.fn_Util_CONTAINS_SearchString('value1 value2',default,default)
SELECT * FROM Table WHERE CONTAINS(name,#ftName)
I would appreciate any comments/suggestions.
For your consideration.
I understand your Senior wants to avoid dynamic SQL, but it is my firm belief that Dynamic SQL is NOT evil.
In the example below, you can see that with a few parameters (or even defaults), and a 3 lines of code, you can:
1) Dynamically search any source
2) Return desired or all elements
3) Rank the Hit rate
The SQL
Declare #SearchFor varchar(max) ='Daily,Production,default' -- any comma delim string
Declare #SearchFrom varchar(150) ='OD' -- table or even a join statment
Declare #SearchExpr varchar(150) ='[OD-Title]+[OD-Class]' -- Any field or even expression
Declare #ReturnCols varchar(150) ='[OD-Nr],[OD-Title]' -- Any field(s) even with alias
Set #SearchFor = 'Sign(CharIndex('''+Replace(Replace(Replace(#SearchFor,' , ',','),', ',''),',',''','+#SearchExpr+'))+Sign(CharIndex(''')+''','+#SearchExpr+'))'
Declare #SQL varchar(Max) = 'Select * from (Select Distinct'+#ReturnCols+',Hits='+#SearchFor+' From '+#SearchFrom + ') A Where Hits>0 Order by Hits Desc'
Exec(#SQL)
Returns
OD-Nr OD-Title Hits
3 Daily Production Summary 2
6 Default Settings 1
I should add that my search string is comma delimited, but you can change to space.
Another note CharIndex can be substanitally faster that LIKE. Take a peek at
http://cc.davelozinski.com/sql/like-vs-substring-vs-leftright-vs-charindex
I have a stored procedure (join two tables and select where condition #GID), a want to convert table result from rows to columns. I use a dynamic pivot query.
My stored procedure:
After I try using pivot
I want result like this:
GROUP_MOD_ID ADD EDIT DELETE ETC...
---------------------------------------
G02 1 1 0 ....
Can you give me some advice about this ?
Thank you.
It's because you're using the batch delimiter to separate your queries. This means the scope of #GID is incorrect. Remove the semi colon after:
DECLARE #pivot_cols NVARCHAR(MAX);
You don't need to use batch delimiters in this case. The logical flow of the procedure means you can omit them without any problems.
EDIT:
Here's the edited code that I've devised:
ALTER PROCEDURE GET_COLUMN_VALUE #GID CHAR(3)
AS
BEGIN
DECLARE #PivotCols NVARCHAR(MAX)
SELECT #PivotCols = STUFF((SELECT DISTINCT ' , ' + QUOTENAME(B.FUNCTION_MOD_NAME)
FROM FUNCTION_GROUP AS A
JOIN FUNCTION_MOD B
ON A.FUNCTION_MOD_ID = B.FUNCTION_MOD_ID
WHERE A.GROUP_MOD_ID = #GID
FOR XML PATH (' '), TYPE).value(' . ', 'NVARCHAR(MAX) '), 1, 1, ' ')
DECLARE #PivotQuery NVARCHAR(MAX)
SET #PivotQuery = '
;WITH CTE AS (
SELECT A.GROUP_MOD_ID, B.FUNCTION_MOD_NAME, CAST(ALLOW AS BIT) AS ALLOW
FROM FUNCTION_GROUP AS A
JOIN FUNCTION_MOD AS B
ON A.FUNCTION_MOD_ID = B.FUNCTION_MOD_ID)
SELECT GROUP_MOD_ID, '+#PivotCols+'
FROM CTE
PIVOT (MAX(ALLOW) FOR FUNCTION_MOD_NAME IN ('+#PivotCols')) AS PIV'
PRINT #PivotQuery
EXEC (#PivotQuery)
END
EDIT2:
You should execute this stored procedure like so:
EXEC GET_COLUMN_VALUE #GID='G02'