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I won't be surprised if SQL just doesn't work this way at all, but:
If we run two SELECT statements in a query, we get a split "Results" pane. I'm wondering if I can add variables to a list, and then have the number of result pane splits match the length of that list.
If I were to mix languages:
id_list = [26275, 54374, 84567]
for i in id_list:
SELECT * FROM table WHERE id = i
I'm just trying to easily compare results of a query while keeping distinct groups, with a changing number of variables. Since loops never seem to be the answer in SQL, I'd be just as happy inserting something like a blank line or horizontal rule, etc. Not sure if that's possible either though...
There is no concept of "lists" (as a separate data structure) in T-SQL. Does this do what you want?
SELECT *
FROM table
WHERE id IN (26275, 54374, 84567);
declare #i int = 0;
declare #Id int;
declare #Ids table (Id int);
insert #Ids select Id from (values (26275), (54374), (84567)) t(Id);
-- OR: insert #Ids select * from string_split('26275, 54374, 84567', ',');
declare #Count int = (select count(*) from #Ids);
while #i < #Count
begin
select #Id = Id, #i = #i + 1
from #Ids order by Id
offset #i rows fetch next 1 rows only;
select * from dbo.MyTable where Id = #Id;
end
You can use UNION ALL:
SELECT * FROM table WHERE id = 26275
UNION ALL
SELECT * FROM table WHERE id = 54374
UNION ALL
SELECT * FROM table WHERE id = 84567
I created a temp table #test containing 3 fields: ColumnName, TableName, and Id.
I would like to see which rows in the #test table (columns in their respective tables) are not empty? I.e., for every column name that i have in the ColumnName field, and for the corresponding table found in the TableName field, i would like to see whether the column is empty or not. Tried some things (see below) but didn't get anywhere. Help, please.
declare #LoopCounter INT = 1, #maxloopcounter int, #test varchar(100),
#test2 varchar(100), #check int
set #maxloopcounter = (select count(TableName) from #test)
while #LoopCounter <= #maxloopcounter
begin
DECLARE #PropIDs TABLE (tablename varchar(max), id int )
Insert into #PropIDs (tablename, id)
SELECT [tableName], id FROM #test
where id = #LoopCounter
set #test2 = (select columnname from #test where id = #LoopCounter)
declare #sss varchar(max)
set #sss = (select tablename from #PropIDs where id = #LoopCounter)
set #check = (select count(#test2)
from (select tablename
from #PropIDs
where id = #LoopCounter) A
)
print #test2
print #sss
print #check
set #LoopCounter = #LoopCounter + 1
end
In order to use variables as column names and table names in your #Check= query, you will need to use Dynamic SQL.
There is most likely a better way to do this but I cant think of one off hand. Here is what I would do.
Use the select and declare a cursor rather than a while loop as you have it. That way you dont have to count on sequential id's. The cursor would fetch fields columnname, id and tablename
In the loop build a dynamic sql statement
Set #Sql = 'Select Count(*) Cnt Into #Temp2 From ' + TableName + ' Where ' + #columnname + ' Is not null And ' + #columnname <> '''''
Exec(#Sql)
Then check #Temp2 for a value greater than 0 and if this is what you desire you can use the #id that was fetched to update your #Temp table. Putting the result into a scalar variable rather than a temp table would be preferred but cant remember the best way to do that and using a temp table allows you to use an update join so it would well in my opinion.
https://www.mssqltips.com/sqlservertip/1599/sql-server-cursor-example/
http://www.sommarskog.se/dynamic_sql.html
Found a way to extract all non-empty tables from the schema, then just joined with the initial temp table that I had created.
select A.tablename, B.[row_count]
from (select * from #test) A
left join
(SELECT r.table_name, r.row_count, r.[object_id]
FROM sys.tables t
INNER JOIN (
SELECT OBJECT_NAME(s.[object_id]) table_name, SUM(s.row_count) row_count, s.[object_id]
FROM sys.dm_db_partition_stats s
WHERE s.index_id in (0,1)
GROUP BY s.[object_id]
) r on t.[object_id] = r.[object_id]
WHERE r.row_count > 0 ) B
on A.[TableName] = B.[table_name]
WHERE ROW_COUNT > 0
order by b.row_count desc
How about this one - bitmask computed column checks for NULLability. Value in the bitmask tells you if a column is NULL or not. Counting base 2.
CREATE TABLE FindNullComputedMask
(ID int
,val int
,valstr varchar(3)
,NotEmpty as
CASE WHEN ID IS NULL THEN 0 ELSE 1 END
|
CASE WHEN val IS NULL THEN 0 ELSE 2 END
|
CASE WHEN valstr IS NULL THEN 0 ELSE 4 END
)
INSERT FindNullComputedMask
SELECT 1,1,NULL
INSERT FindNullComputedMask
SELECT NULL,2,NULL
INSERT FindNullComputedMask
SELECT 2,NULL, NULL
INSERT FindNullComputedMask
SELECT 3,3,3
SELECT *
FROM FindNullComputedMask
I use Excel connection to connect to SQL Server to query data from SQL server to Excel.
I have below WHERE clause in the Excel connection couple times. I need to replace the WHERE multiple value list from time to time. To simply the replacement, I want to use a local parameter, #Trans. With the local parameter, I can change it only and all SQL will use it to query.
WHERE Type in ('R','D','C')
If it is single option, below code works.
DECLARE #TRans CHAR(200)= 'R';
SELECT .....
WHERE Type in (#Trans)
If it is multiple options, the below code does not works
DECLARE #TRans CHAR(200)= 'R,D,C';
SELECT .....
WHERE Type in (#Trans)
DECLARE #TRans CHAR(200)= '''R'''+','+'''D'''+','+'''C''';
SELECT .....
WHERE Type in (#Trans)
How to declare #Trans for multiple value list, for example ('R','D','C')? Thank you.
You can use dynamic sql
DECLARE #TRans VARCHAR(200)= '''R'',''D'',''C''';
DECLARE #sql VARCHAR(MAX) = '';
SET #sql = 'SELECT * FROM table WHERE Type in (' + #Trans + ');'
EXEC #sql
Take note of the quotes for the values in #TRans since these character values.
If you want to check the value of #sql which you will see the constructed sql statement, replace EXEC #sql with PRINT #sql.
Result of #sql
SELECT * FROM table WHERE Type in ('R','D','C');
As you can see by now, SQL Server does NOT support macro substition. This leaves a couple of options. One is to split the string.
If not 2016, here is a quick in-line approach which does not require a Table-Valued Function
Example
Declare #Trans varchar(max)='R,D,C' -- Notice no single quotes
Select ...
Where Type in (
Select RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>' + replace(#Trans,',','</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
)
You can create a table named LocalParameter and keep local variables there. You can only get datas by updating LocalParameter table without changing the queries.
CREATE TABLE LocalParameter (Trans VARCHAR(MAX))
INSERT INTO LocalParameter
VALUES
(
',R,'
)
With LIKE you can use it like this:
SELECT .....
WHERE (SELECT TOP 1 A.Trans FROM LocalParameter A) LIKE ',' + Type + ','
To change WHERE clause:
UPDATE LocalParameter
SET Trans = ',R,D,C,'
Queries:
SELECT .....
WHERE (SELECT TOP 1 A.Trans FROM LocalParameter A) LIKE ',' + Type + ','
Local variables are added to the beginning and end of the comma.
You can use a split method to split csv values as shown below
DECLARE #delimiter VARCHAR(10)=','
DECLARE #input_string VARCHAR(200)='R,D,C'
;WITH CTE AS
(
SELECT
SUBSTRING(#input_string,0,CHARINDEX(#delimiter,#input_string)) AS ExtractedString,
SUBSTRING(#input_string,CHARINDEX(#delimiter,#input_string) + 1,LEN(#input_string)) AS PartString
WHERE CHARINDEX(#delimiter,#input_string)>0
UNION ALL
SELECT
SUBSTRING(PartString,0,CHARINDEX(#delimiter,PartString)) AS ExtractedString,
SUBSTRING(PartString,CHARINDEX(#delimiter,PartString)+1,LEN(PartString)) AS PartString
FROM CTE WHERE CHARINDEX(#delimiter,PartString)>0
)
SELECT ExtractedString FROM CTE
UNION ALL
SELECT
CASE WHEN CHARINDEX(#delimiter,REVERSE(#input_string))>0
THEN REVERSE(SUBSTRING(REVERSE(#input_string),0,CHARINDEX(#delimiter,REVERSE(#input_string))))
ELSE #input_string END
OPTION (MAXRECURSION 0)
This split method doesnt have any loops so it will be fast. then you integrate this with your query as below mentioned
DECLARE #delimiter VARCHAR(10)=','
DECLARE #input_string VARCHAR(200)='R,D,C'
;WITH CTE AS
(
SELECT
SUBSTRING(#input_string,0,CHARINDEX(#delimiter,#input_string)) AS ExtractedString,
SUBSTRING(#input_string,CHARINDEX(#delimiter,#input_string) + 1,LEN(#input_string)) AS PartString
WHERE CHARINDEX(#delimiter,#input_string)>0
UNION ALL
SELECT
SUBSTRING(PartString,0,CHARINDEX(#delimiter,PartString)) AS ExtractedString,
SUBSTRING(PartString,CHARINDEX(#delimiter,PartString)+1,LEN(PartString)) AS PartString
FROM CTE WHERE CHARINDEX(#delimiter,PartString)>0
)
SELECT * FROM [YourTableName] WHERE Type IN
(SELECT ExtractedString FROM CTE
UNION ALL
SELECT
CASE WHEN CHARINDEX(#delimiter,REVERSE(#input_string))>0
THEN REVERSE(SUBSTRING(REVERSE(#input_string),0,CHARINDEX(#delimiter,REVERSE(#input_string))))
ELSE #input_string END
)OPTION (MAXRECURSION 0)
If possible add a new table and then join to it in all your queries:
CREATE TABLE SelectedType
(
[Type] CHAR(1) PRIMARY KEY
)
INSERT INTO SelectedType
VALUES ('R','D','C')
Then your queries become:
SELECT *
FROM MyTable MT
INNER JOIN SelectedType [ST]
ON ST.[Type] = MT.[Type]
If you need to add, update or delete types then update the rows in SelectedType table.
This has the benefit of using SET BASED queries, is easy to understand and easy to add, update or delete required types.
Is it possible to execute a SQL statement Stored in a Table, with T-SQL?
DECLARE #Query text
SET #Query = (Select Query FROM SCM.dbo.CustomQuery)
The statements that are stored in the table are ad-hoc statements which could be SELECT TOP 100 * FROM ATable to more complex statements:
Select
J.JobName As Job,
JD.JobDetailJobStart AS StartDate,
JD.JobDetailJobEnd AS EndDate,
(
SELECT (DATEDIFF(dd, JD.JobDetailJobStart, JD.JobDetailJobEnd) + 1) -(DATEDIFF(wk, JD.JobDetailJobStart, JD.JobDetailJobEnd) * 2) -(CASE WHEN DATENAME(dw, JD.JobDetailJobStart) = 'Sunday' THEN -1 ELSE 0 END) -(CASE WHEN DATENAME(dw, JD.JobDetailJobEnd) = 'Saturday' THEN -1 ELSE 0 END)
) AS NumberOfWorkingDays,
JD.JobDetailDailyTarget AS DailyTarget,
JD.JobDetailWeeklyTarget AS WeeklyTarget,
JD.JobDetailRequiredQTY AS RequiredQuantity,
(
Select SUM(sJL.JobLabourQuantityEmployees) From JobLabour sJL
) AS NumberOfEmployees,
(
Select
SUM((sEM.EmployeeDesignationDefaultRate * sJL.JobLabourQuantityEmployees)*8)*(SELECT (DATEDIFF(dd, JD.JobDetailJobStart, JD.JobDetailJobEnd) + 1) -(DATEDIFF(wk, JD.JobDetailJobStart, JD.JobDetailJobEnd) * 2) -(CASE WHEN DATENAME(dw, JD.JobDetailJobStart) = 'Sunday' THEN -1 ELSE 0 END) -(CASE WHEN DATENAME(dw, JD.JobDetailJobEnd) = 'Saturday' THEN -1 ELSE 0 END))
from EmployeeDesignation sEM
Inner join JobLabour sJL on sJL.EmployeeDesignationID = sEM.EmployeeDesignationID
) AS FullEmployeeRate
from Job J
Inner Join JobDetail JD on JD.JobID = J.JobID
Inner Join JobLabour JL on JL.JobID = J.JobID
WHERE J.JobActive = 0
I want to execute the #Query Variable that I declared from T-SQL. Is this possible? (I am running a MSSQL 2005 enviroment)
You can use
EXECUTE sp_executesql #Query
to run your T-SQL
Here's a link to the MS docn for SQL Server 2005
http://msdn.microsoft.com/en-us/library/ms188001%28v=sql.90%29.aspx
The previous answer allows you to run one statement, and is valid. The question was on how to run SQL Statements stored in a table, which I took as more than one statement being executed. For this extra step, there is a while loop involved to iterate through each statement that need to be run.
-- Author: Chad Slagle
DECLARE #Table table (RID BIGINT IDENTITY(1,1) PRIMARY KEY CLUSTERED,
SQLText NVARCHAR(MAX) )
DECLARE #StatementMax INT
,#statementMin INT
,#isTest TINYINT = 1
,#SQLStatement NVARCHAR(MAX)
-- Insert SQL Into Temp Table
INSERT INTO #table (SQLText)
VALUES ('SELECT ##Version');
INSERT INTO #table (SQLText)
VALUES ('SELECT SERVERPROPERTY(''ProductVersion'')')
-- Get your Iterator Values
SELECT #statementMAX = MAX(RID), #statementMIN = MIN(RID) FROM #table
IF #isTest = 1 BEGIN SELECT *, #statementMax AS MaxVal, #StatementMin AS MinVal FROM #Table END
-- Start the Loop
WHILE #StatementMax >= #statementMin
BEGIN
SELECT #SQLStatement = SQLText FROM #table WHERE RID = #statementMin -- Get the SQL from the table
IF #isTest = 1 BEGIN SELECT 'I am executing: ' + #SQLStatement AS theSqlBeingRun, GETDATE(), #statementMin, #StatementMax END
ELSE
BEGIN
EXECUTE sp_ExecuteSQL #SQLStatement -- Execute the SQL
END
DELETE FROM #table WHERE RID = #statementMin -- Delete the statement just run from the table
SELECT #statementMIN = MIN(RID) FROM #Table -- Update to the next RID
IF #isTest = 1 BEGIN SELECT * FROM #table END
END
In Summary, I created a temp table and put some SQL in it, using a IDENTITY (RID) field to provide an iterator for the while loop. Then ran the while loop. In the example, you should return two views of your SQL Version. I built this on 2k8, and I hope it helps someone out of a jam one day..
We use a much simpler approach. Store the scripts (raw sql or stored procedure calls) in a table with a column containing an identifying code for said script. Use placeholders in your script for parameters. Any scripts that are used a lot can be "keyed" in your app or web config file. If scripts need to be executed in a specific order, put an ordinal column in the table. The actual "script" can then be pulled into a c# list or array, passed to a database class library and executed accordingly. This gives you dynamic control over your SQL and allows you to make changes on the database side for said scripts without recompiling your main application.
TRUNCATE TABLE AllTableUnion
DECLARE #Query2 Nvarchar(MAX)
SET #Query2='SELECT * FROM #UnionString t1)A'
INSERT INTO AllTableUnion
EXEC(#Query2)
DECLARE #Query4 Nvarchar(MAX)=(SELECT Query FROM AllTableUnion)
EXECUTE sp_ExecuteSQL #Query4
I have a similar situation I just can't get to work. I'd like to create a table, where we have a customer number, and the business rules used to determine codes for a variety of items. The table psudo looks like this:
| CustomerNumber | RuleName | Rule |
----------------------------------------------------------------------
| 12345 |ShippingCharged | iif(id.ItemID in (1,2,3,4,5,6) AND
cod.Code IN (5,6,7,8),1,0)
| 99999 |ShippingCharged | iif(id.ItemID in (1,2,3,7,9,10) AND
cod.Code NOT IN (5,7,8),1,0)
I want to run a SELECT in the form:
SELECT CustomerNumber, RuleName, Rule as Value
FROM CustomerRules cr
JOIN CustomerData cd
ON cd.CustomerNumber = cd.CustomerNumber
JOIN ItemsData id
ON cd.ItemID = id.ItemID
JOIN CodesData cod
ON cd.Code = cod.Code
WHERE cr.RuleName = 'ShippingCharged'
To return The Customer Number, the name of the Rule used and the calculated value of the IIF statement. I am getting the text of the Rule calculation, rather than the calculated value.
I've tried various forms of DSQL and TSQL but can't seem to get the column to be treated as a function, just a text value from the table.
Any ideas?
I bought a SQL World City/State database. In the state database it has the state names pushed together. Example: "NorthCarolina", or "SouthCarolina"...
IS there a way in SQL to loop and find the uppercase characters and add a space???
this way "NorthCarolina" becomes "North Carolina"???
Create this function
if object_id('dbo.SpaceBeforeCaps') is not null
drop function dbo.SpaceBeforeCaps
GO
create function dbo.SpaceBeforeCaps(#s varchar(100)) returns varchar(100)
as
begin
declare #return varchar(100);
set #return = left(#s,1);
declare #i int;
set #i = 2;
while #i <= len(#s)
begin
if ASCII(substring(#s,#i,1)) between ASCII('A') and ASCII('Z')
set #return = #return + ' ' + substring(#s,#i,1)
else
set #return = #return + substring(#s,#i,1)
set #i = #i + 1;
end;
return #return;
end;
GO
Then you can use it to update your database
update tbl set statename = select dbo.SpaceBeforeCaps(statename);
There's a couple ways to approach this
Construct a function using a pattern and the PATINDEX feature.
Chain minimal REPLACE statements for each case (e.g. REPLACE(state_name, 'hC', 'h C' for your example case). This seems is kind of a hack, but might actually give you the best performance, since you have such a small set of replacements.
If you absolutely cannot create functions and need this as a one-off, you can use a recursive CTE to break the string up (and add the space at the same time where required), then recombine the characters using FOR XML. Elaborate example below:
-- some sample data
create table #tmp (id int identity primary key, statename varchar(100));
insert #tmp select 'NorthCarolina';
insert #tmp select 'SouthCarolina';
insert #tmp select 'NewSouthWales';
-- the complex query updating the "statename" column in the "#tmp" table
;with cte(id,seq,char,rest) as (
select id,1,cast(left(statename,1) as varchar(2)), stuff(statename,1,1,'')
from #tmp
union all
select id,seq+1,case when ascii(left(rest,1)) between ascii('A') and ascii('Z')
then ' ' else '' end + left(rest,1)
, stuff(rest,1,1,'')
from cte
where rest > ''
), recombined as (
select a.id, (select b.char+''
from cte b
where a.id = b.id
order by b.seq
for xml path, type).value('/','varchar(100)') fixed
from cte a
group by a.id
)
update t
set statename = c.fixed
from #tmp t
join recombined c on c.id = t.id
where statename != c.fixed;
-- check the result
select * from #tmp
----------- -----------
id statename
----------- -----------
1 North Carolina
2 South Carolina
3 New South Wales