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How to flatten a hierarchical index in columns
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I have my df.columns = this MultiIndex
MultiIndex([( 'F', 1),
( 'F', 2),
( 'F', 3),
( 'F', 4),
( 'F', 5),
( 'F', 6),
( 'F', 7),
( 'F', 8),
( 'F', 9),
( 'FG', 1),
( 'FG', 2),
( 'FG', 3),
( 'FG', 4),
( 'FG', 5),
( 'FG', 6),
( 'FG', 7),
( 'FG', 8),
( 'FG', 9),
( 'R', 1),
( 'R', 2),
( 'R', 3),
( 'R', 4),
( 'R', 5),
( 'R', 6),
( 'R', 7),
( 'R', 8),
( 'R', 9),
('RG', 1),
('RG', 2),
('RG', 3),
('RG', 4),
('RG', 5),
('RG', 6),
('RG', 7),
('RG', 8),
('RG', 9),
( 'FR', 1),
( 'FR', 2),
( 'FR', 3),
( 'FR', 4),
( 'FR', 5),
( 'FR', 6),
( 'FR', 7),
( 'FR', 8),
( 'FR', 9)],
names=[None, 'Profondeur'])
I want it to become Index like this :
Index(['F_1', 'F_2', 'F_3', 'F_4', 'F_5', 'F_6', 'F_7', 'F_8', 'F_9',
'FG_1', 'FG_2', 'FG_3', 'FG_4', 'FG_5', 'FG_6', 'FG_7', 'FG_8', 'FG_9',
'R_1', 'R_2', 'R_3', 'R_4', 'R_5', 'R_6', 'R_7', 'R_8', 'R_9',
'RG_1', 'RG_2', 'RG_3', 'RG_4', 'RG_5', 'RG_6', 'RG_7', 'RG_8', 'RG_9',
'FR_1', 'FR_2', 'FR_3', 'FR_4', 'FR_5', 'FR_6', 'FR_7', 'FR_8', 'FR_9'], dtype='object')
I don't know much about MultiIndex and I obtained it after an unstack() method. In fact I want to combine both level concatenating their columns names with '_' as a separator. Also 'Profondeur' label is int and maybe it needs to be turned to str
Collapse a MultiIndex into a simple Index by assigning the columns back to a list. In this case, use a list comprehension to '_'.join the two components of the MultiIndex (the values are simple tuples), with an extra step of mapping to strings because you can't string join a string with an int.
df.columns = ['_'.join(map(str, x)) for x in df.columns]
print(df.columns)
#Index(['F_1', 'F_2', 'F_3', 'F_4', 'F_5', 'F_6', 'F_7', 'F_8', 'F_9', 'FG_1',
# 'FG_2', 'FG_3', 'FG_4', 'FG_5', 'FG_6', 'FG_7', 'FG_8', 'FG_9', 'R_1',
# 'R_2', 'R_3', 'R_4', 'R_5', 'R_6', 'R_7', 'R_8', 'R_9', 'RG_1', 'RG_2',
# 'RG_3', 'RG_4', 'RG_5', 'RG_6', 'RG_7', 'RG_8', 'RG_9', 'FR_1', 'FR_2',
# 'FR_3', 'FR_4', 'FR_5', 'FR_6', 'FR_7', 'FR_8', 'FR_9'],
# dtype='object')
The following is working in Julia JuMP:
#variable(m, δ[i=V, j=tildeV ; i != j && ŷ[i] < .5 && s[i,j] == sim_i[i]] >= 0)
While
Ω = [(i,j) for i in V, j in tildeV if i != j && ŷ[i] < .5 && s[i,j] == sim_i[i]]
#variable(m, δ[(i,j)=Ω] >= 0)
Results an error:
ERROR: UndefVarError: i not defined
What am I doing wrong? I could not find in the documentation. I tried: δ[(i,j)...=Ω] and δ[(i,j)=Ω...]
You might want to use a simpler Ω for minimal example like
Ω = [(i,j) for i in 1:5, j in 1:5]
These all work, so there must be a problem elsewhere in your code.
julia> S = [(1,2), (3,4)]
2-element Vector{Tuple{Int64, Int64}}:
(1, 2)
(3, 4)
julia> model = Model()
A JuMP Model
Feasibility problem with:
Variables: 0
Model mode: AUTOMATIC
CachingOptimizer state: NO_OPTIMIZER
Solver name: No optimizer attached.
julia> #variable(model, x[(i, j) = S])
1-dimensional DenseAxisArray{VariableRef,1,...} with index sets:
Dimension 1, [(1, 2), (3, 4)]
And data, a 2-element Vector{VariableRef}:
x[(1, 2)]
x[(3, 4)]
julia> Ω = [(i,j) for i in 1:5, j in 1:5]
5×5 Matrix{Tuple{Int64, Int64}}:
(1, 1) (1, 2) (1, 3) (1, 4) (1, 5)
(2, 1) (2, 2) (2, 3) (2, 4) (2, 5)
(3, 1) (3, 2) (3, 3) (3, 4) (3, 5)
(4, 1) (4, 2) (4, 3) (4, 4) (4, 5)
(5, 1) (5, 2) (5, 3) (5, 4) (5, 5)
julia> model = Model()
A JuMP Model
Feasibility problem with:
Variables: 0
Model mode: AUTOMATIC
CachingOptimizer state: NO_OPTIMIZER
Solver name: No optimizer attached.
julia> #variable(model, x[(i, j) = Ω])
1-dimensional DenseAxisArray{VariableRef,1,...} with index sets:
Dimension 1, [(1, 1) (1, 2) … (1, 4) (1, 5); (2, 1) (2, 2) … (2, 4) (2, 5); … ; (4, 1) (4, 2) … (4, 4) (4, 5); (5, 1) (5, 2) … (5, 4) (5, 5)]
And data, a 25-element Vector{VariableRef}:
x[(1, 1)]
x[(2, 1)]
x[(3, 1)]
x[(4, 1)]
x[(5, 1)]
x[(1, 2)]
x[(2, 2)]
x[(3, 2)]
x[(4, 2)]
x[(5, 2)]
⋮
x[(2, 4)]
x[(3, 4)]
x[(4, 4)]
x[(5, 4)]
x[(1, 5)]
x[(2, 5)]
x[(3, 5)]
x[(4, 5)]
x[(5, 5)]
I am designing an Electrical design software that will model an electrical utility system from the incoming Power Utility right down to the individual circuits such as computers and coffee machines.
I want to give each component of the system a dedicated table. eg. Transformers, Loads, cables, PowerPanels (called buses in this example).
Each component can be connected to one or many other components. I am using a parent/child table to manage the connections and plan to use a CTE to derive the hierarchical tree structure for a given component.
The voltage supplying any component in the system will be derived by finding the first instance of a transformer or a utility in the tree.
I have developed a query that can handle this as demonstrated below.
However, this only works for selecting one component in the CTE. I am looking for a way to select all buses and their connected voltage (nearest trafo or Utility). The only solution I can come up with is to use a table function on the above query. Is there a better way of doing this.
CREATE TABLE #componentConnection
(componentConnectionID int, parentComponentID varchar(4), childComponentID int)
;
INSERT INTO #componentConnection
(componentConnectionID, parentComponentID, childComponentID)
VALUES
(1, '13', 18),
(2, '13', 19),
(3, '13', 20),
(4, '13', 21),
(5, '13', 22),
(6, '13', 23),
(7, '14', 24),
(8, '14', 25),
(9, '14', 26),
(10, '14', 27),
(11, '14', 28),
(12, '14', 29),
(13, '15', 30),
(14, '15', 31),
(15, '15', 32),
(16, '15', 33),
(17, '15', 34),
(18, '15', 35),
(19, '16', 36),
(20, '16', 37),
(21, '16', 38),
(22, '16', 39),
(23, '16', 40),
(24, '16', 41),
(25, '1', 5),
(27, '5', 13),
(28, NULL, 1),
(29, '18', 6),
(30, '6', 11),
(31, '11', 7),
(32, '7', 14)
;
CREATE TABLE #component
(componentID int, componentName varchar(8), componentType varchar(7))
;
INSERT INTO #component
(componentID, componentName, componentType)
VALUES
(1, 'Utility1', 'utility'),
(2, 'Utility2', 'utility'),
(3, 'utility3', 'utility'),
(4, 'utility4', 'utility'),
(5, 'Cable1', 'cable'),
(6, 'Cable2', 'cable'),
(7, 'Cable3', 'cable'),
(8, 'Cable4', 'cable'),
(9, 'Cable5', 'cable'),
(10, 'Cable6', 'cable'),
(11, 'Trafo1', 'trafo'),
(12, 'Trafo2', 'trafo'),
(13, 'Bus1', 'bus'),
(14, 'Bus2', 'bus'),
(15, 'Bus3', 'bus'),
(16, 'Bus4', 'bus'),
(17, 'Bus5', 'bus'),
(18, 'cub1', 'cir'),
(19, 'cub2', 'cir'),
(20, 'cub3', 'cir'),
(21, 'cub4', 'cir'),
(22, 'cub5', 'cir'),
(23, 'cub6', 'cir'),
(24, 'cub1', 'cir'),
(25, 'cub2', 'cir'),
(26, 'cub3', 'cir'),
(27, 'cub4', 'cir'),
(28, 'cub5', 'cir'),
(29, 'cub6', 'cir'),
(30, 'cub1', 'cir'),
(31, 'cub2', 'cir'),
(32, 'cub3', 'cir'),
(33, 'cub4', 'cir'),
(34, 'cub5', 'cir'),
(35, 'cub6', 'cir'),
(36, 'cub1', 'cir'),
(37, 'cub2', 'cir'),
(38, 'cub3', 'cir'),
(39, 'cub4', 'cir'),
(40, 'cub5', 'cir'),
(41, 'cub6', 'cir')
;
CREATE TABLE #utility
([utilityID] int, [componentID] int, [utlityKV] float)
;
INSERT INTO #utility
([utilityID], [componentID], [utlityKV])
VALUES
(1, 1, 0.4),
(2, 2, 0.208),
(4, 3, 0.48),
(5, 4, 0.208)
;
CREATE TABLE #transformer
([transformerID] int, [componentID] int, [facilityID] int, [transformerName] varchar(4), [transformerPrimaryTapKv] float, [transformerSecondaryTapKv] float, [transformerPrimaryKv] float, [transformerSecondaryKv] float)
;
INSERT INTO #transformer
([transformerID], [componentID], [facilityID], [transformerName], [transformerPrimaryTapKv], [transformerSecondaryTapKv], [transformerPrimaryKv], [transformerSecondaryKv])
VALUES
(3, 11, 1, NULL, 0.48, 0.208, 0.48, 0.208),
(4, 12, 2, NULL, 0.48, 0.4, 0.48, 0.4)
;
CREATE TABLE #Bus
([busID] int, [busTypeID] int, [componentID] int, [bayID] int, [busName] varchar(4), [busConductorType] varchar(6), [busRatedCurrent] int)
;
INSERT INTO #Bus
([busID], [busTypeID], [componentID], [bayID], [busName], [busConductorType], [busRatedCurrent])
VALUES
(8, 1, 13, 1, 'bus1', 'Copper', 60),
(9, 1, 14, 1, 'bus2', 'copper', 50),
(10, 2, 15, 1, 'bus3', 'copper', 35),
(11, 2, 16, 1, 'bus4', 'copper', 35),
(13, 1, 17, 1, 'bus5', 'copper', 50)
;
WITH CTE AS (SELECT childComponentID AS SourceID, childComponentID, 0 AS depth
FROM #ComponentConnection
UNION ALL
SELECT C1.SourceID, C.childComponentID, c1.depth + 1 AS depth
FROM #ComponentConnection AS C INNER JOIN
CTE AS C1 ON C.parentComponentID = C1.childComponentID)
SELECT childComponentID,b.busName, min(depth)
--,c.componentType
,isnull(t.transformerSecondaryKv,u.utlityKV) kV
FROM CTE AS CTE1
join #Component c
on CTE1.SourceID = c.componentID
left join #Utility u
on CTE1.SourceID = u.componentID
left join #Transformer t
on CTE1.SourceID = t.componentID
LEFT JOIN #Bus b
on cte1.childComponentID = b.componentID
where busName is not null and c.componentType in ('Utility','trafo')
group by childComponentID,b.busName,isnull(t.transformerSecondaryKv,u.utlityKV)
order by depth
The desired result would be as follows for a Bus. I want to list all Buses and their associated Voltage. I would select all from the Bus table and derive the voltage from the heirarchical structure
Result
BusName | Voltage
Bus 1 | 0.4
Bus 2 | 0.208
Bus 3 | etc
I'm using SQL Server Management to create a database (fot a work in the university), I'm trying to insert new values into a table but recieving error.
The two relevant tables I created are:
create table ballotBox
(
bno integer,
cid numeric(4,0) references city,
street varchar(20),
hno integer,
totvoters integer,
primary key (bno)
);
create table votes
(
cid numeric(4,0) references city,
bno integer references ballotBox,
pid numeric(3,0) references party,
nofvotes integer
);
I've entered first the values to ballotBox (as well as for the table 'city' and 'party'):
insert into ballotBox values
(1, 1, 'street1', 10, 1500),
(2, 1, 'street2', 15, 490),
(3, 1, 'street2', 15, 610),
(4, 1, 'street2', 15, 650),
(5, 2, 'street3', 10, 900),
(6, 2, 'street3', 55, 800),
(7, 2, 'street4', 67, 250),
(8, 2, 'street4', 67, 990),
(9, 2, 'street5', 5, 600),
(10, 3, 'street1', 72, 1000),
(11, 3, 'street6', 25, 610),
(12, 3, 'street6', 25, 600),
(13, 4, 'street2', 3, 550),
(14, 4, 'street7', 15, 500),
(15, 5, 'street8', 44, 1100),
(16, 5, 'street9', 7, 710),
(17, 5, 'street10', 13, 950);
And then I tried to enter values to votes:
insert into votes values
(1, 1, 200, 100),
(1, 11, 210, 220),
(1, 1, 220, 2),
(1, 1, 230, 400),
(1, 1, 240, 313),
(1, 1, 250, 99),
(2, 1, 200, 55),
(2, 10, 210, 150),
(2, 10, 220, 2),
(2, 1, 230, 16),
(2, 1, 240, 210),
(2, 9, 250, 54),
(3, 9, 200, 234),
(3, 9, 210, 123),
(3, 1, 220, 8),
(3, 1, 230, 87),
(3, 1, 240, 76),
(3, 1, 250, 6),
(4, 1, 200, 135),
(4, 1, 210, 246),
(4, 17, 220, 7),
(4, 1, 230, 18),
(4, 1, 240, 44),
(4, 1, 250, 66),
(1, 2, 200, 373),
(1, 2, 210, 12),
(1, 2, 220, 3),
(1, 2, 230, 74),
(1, 2, 240, 58),
(1, 2, 250, 272),
(2, 6, 200, 139),
(2, 6, 210, 2580),
(2, 2, 220, 6),
(2, 2, 230, 73),
(2, 2, 240, 7),
(2, 2, 250, 99),
(3, 2, 200, 15),
(3, 2, 210, 68),
(3, 2, 220, 12),
(3, 2, 230, 12),
(3, 2, 240, 15),
(3, 2, 250, 25),
(4, 2, 200, 7),
(4, 2, 210, 245),
(4, 2, 220, 8),
(1, 0, 0.0, 361),
(4, 2, 240, 67),
(4, 2, 250, 144),
(5, 2, 200, 123),
(5, 2, 210, 76),
(5, 2, 220, 15),
(5, 2, 230, 158),
(5, 2, 240, 76),
(5, 2, 250, 132),
(1, 3, 200, 152),
(1, 3, 210, 517),
(1, 3, 220, 0),
(1, 3, 230, 267),
(2, 3, 200, 87),
(2, 3, 210, 134),
(2, 3, 220, 4),
(2, 3, 230, 11),
(2, 3, 240, 256),
(2, 3, 250, 76),
(3, 3, 200, 105),
(3, 3, 210, 132),
(3, 3, 3220, 3),
(3, 3, 230, 24),
(3, 3, 240, 254),
(3, 3, 250, 12),
(1, 4, 200, 61),
(1, 4, 210, 54),
(1, 4, 220, 5),
(1, 4, 230, 19),
(1, 4, 240, 1),
(1, 4, 250, 47),
(2, 4, 200, 17),
(2, 4, 210, 23),
(2, 4, 220, 0),
(2, 4, 230, 64),
(2, 4, 240, 11),
(2, 4, 250, 149),
(1, 5, 0200, 187),
(1, 5, 210, 88),
(1, 5, 220, 1),
(1, 5, 230, 255),
(1, 5, 240, 12),
(1, 5, 250, 373),
(2, 2, 500, 245),
(2, 5, 210, 120),
(2, 5, 220, 9),
(2, 5, 230, 19),
(2, 5, 240, 234),
(2, 5, 250, 5),
(3, 5, 200, 107),
(3, 5, 210, 18),
(3, 5, 220, 11),
(3, 5, 230, 54),
(3, 5, 240, 378),
(3, 5, 250, 243);
But I'm getting an error:
Msg 547, Level 16, State 0, Line 1
The INSERT statement conflicted with the FOREIGN KEY constraint "FK__votes__bno__1920BF5C". The conflict occurred in database "Voting", table "dbo.ballotBox", column 'bno'. The statement has been terminated.
you are trying to insert
(1, 0, 0.0, 361),
in votes table have FK bno
there are no record corresponding to 0 in ballotbox table
please remove this line from votes statement then insert
The relationship between two tables is not correct.
Make it so:
create table votes
(
cid numeric(4,0),
bno integer,
pid numeric(3,0),
nofvotes integer
foreing key cid reference city(cid)
foreing key bno reference ballotbox (bno)
foreing key pid reference party(pid)
);
I am working on a system currently for Asset Management within our company.
The system allows users to sign in/out items on either a permenant or temporary basis.
I am working on some reporting on the system and have hit a stumbling block with returning the relevent data.
So i know that i need a nested Select TOP 1 statement within my main query but i cant get it to work.
The main query is as follows:
SELECT [Asset-User].ID, [Asset-User].Asset_ID, [Assets].ID, [Assets].Signed_Out, [Assets].Asset_Tag_Serial_Num, [Assets].Name_Hostname, [Assets].Type_ID, [Asset_Type].ID, [Asset_Type].Name_Model, [Asset-User].User_ID, [Company_Users].ID, [Asset-User].Sign_Out_Date, [Asset-User].Return_Date, [Asset-User].[Perm_Signout?]
FROM [Asset-User], [Assets], [Asset_Type], [Company_Users]
WHERE ([User_ID] = '1') AND [Asset-User].Asset_ID = [Assets].ID AND [Assets].Type_ID = [Asset_Type].ID AND [Asset-User].User_ID = [Company_Users].ID AND [Assets].Signed_Out = '1'
So this query returns everything that is currently marked as "Signed Out" that has ever been signed out by User 1.
Somewhere in here i need to add a nested Select TOP 1 on Asset-User.ID so that it only returns items that are marked as permanent sign outs, OR if not permanent that they have most recently been signed out by User 1.
This would then only give me a list of items currently assigned to that user and not display the Asset if someone else has signed it out since
Any help would be greatly appreciated
As per request Sample data below:
https://docs.google.com/spreadsheets/d/1o4T6bsxyO-1dGE0-FUtWFboRupcq4o4V9i2Em0_BjyU/edit?usp=sharing
First sheet shows actual results, second sheet shows roughly what should be expected
As you will see here, this user has signed out a few items multiple times (and those items may not most recently have been signed out by this user)
Its hard to get the sample data but in essence there should be no duplicate Asset_ID's in the list as only the most recent ID (sign out ID this relates to) should be displayed for each Asset_ID.
Does that help?
Thanks again
As per request here is the Schema build code that will create a sample DB to work with
CREATE TABLE Asset_Type
([ID] int, [Global_ID] int, [Name_Model] varchar(30), [Description_Spec] varchar(54))
;
INSERT INTO Asset_Type
([ID], [Global_ID], [Name_Model], [Description_Spec])
VALUES
(1, 1, 'Dell Optiplex 3020', 'Windows 7 Professional, Intel Core i3 3.40GHz,4Gb RAM'),
(2, 3, 'Viewsonic VA2231wa', 'Viewsonic Widescreen Monitor'),
(3, 3, 'Samsung S24B150BL', 'Samsung LED 24" Widescreen Monitor')
;
CREATE TABLE Assets
([ID] int, [Asset_Tag_Serial_Num] varchar(29), [Type_ID] int, [Purchase_Date] varchar(10), [Purchase_Price] varchar(7), [Name_Hostname] varchar(36), [Signed_Out] int)
;
INSERT INTO Assets
([ID], [Asset_Tag_Serial_Num], [Type_ID], [Purchase_Date], [Purchase_Price], [Name_Hostname], [Signed_Out])
VALUES
(1, '0206', 1, '2013-11-29', '323.30', 'WS0206', 1),
(3, '0226', 2, NULL, NULL, 'Viewsonic VA2231wa - 0226', 1),
(4, '0204', 1, '2013-11-29', '323.00', 'WS0204', 1),
(5, '0205', 1, '2013-11-29', '323.00', 'WS0205', 1),
(6, '0108', 1003, NULL, NULL, 'Small Office Sat Nav', 1),
(7, '0092', 1004, NULL, NULL, 'Large Office Sat Nav', 1),
(8, 'GWC36-DHDBC-J2MXY-H2BGY-8C79G', 1005, '1900-01-01', '0.00', 'MS Office for WS0020', 1),
(9, '0020', 1006, '1900-01-01', '0.00', 'WS0020', 1),
(10, '0173', 2, '1900-01-01', '0.00', 'Viewsonic VA2231wa - 0173', 1),
(11, '0172', 1007, '1900-01-01', '0.00', 'Dell 19" Monitor 0172', 1),
(12, '00104926EC6B', 1008, '1900-01-01', '0.00', 'Shortel 230 - EC6B', 1),
(13, '0227', 1009, NULL, NULL, 'Blue - Yeti Mic', 0),
(14, '0221', 1, NULL, NULL, 'WS0221', 1),
(15, '0222', 1, '2013-11-29', '323.00', 'WS0222', 1),
(16, '0223', 1, NULL, NULL, 'WS0223', 1),
(17, '0220', 1, '2013-11-29', '323.00', 'WS0220', 1),
(18, '0217', 1, '2013-11-29', '323.00', 'WS0217', 1),
(19, '0218', 1, NULL, NULL, 'WS0218', 1),
(20, '0219', 1, '2013-11-29', '323.00', 'WS0219', 1),
(21, '0228', 2, NULL, NULL, 'Viewsonic VA2231wa - 0228', 1),
(22, '0229', 1010, NULL, NULL, 'Dell 19" Monitor 0229', 1),
(23, '00104931AA16', 1011, NULL, NULL, 'Shortel 115 - AA16', 1),
(24, '0093 - DYTJ18X4DJ8T', 1012, NULL, NULL, 'Office IPad 3', 1),
(25, '0095', 1013, '1900-01-01', '0.00', '320Gb External HDD', 1),
(26, '0071', 1014, NULL, NULL, '0071 - NEC Projector', 0),
(27, '0072', 1015, NULL, NULL, '0072 - Black Dell Projector', 0),
(28, '0073', 1016, '1900-01-01', '0.00', '0073 - Dell Projector', 0),
(29, '0230', 1017, '1900-01-01', '0.00', '0230 - Silver Dell Projector', 0),
(30, '0064', 1018, NULL, NULL, 'WS0064', 0),
(31, '0231', 1019, NULL, NULL, 'Freecom 1GB Pen - 0231', 1),
(47, '0165', 2, NULL, NULL, 'Viewsonic VA2231wa - 0165', 1),
(48, '0232', 1010, '1900-01-01', '0.00', 'Dell 19" Monitor 0232', 1),
(49, '0233', 1010, '1900-01-01', '0.00', 'Dell 19" Monitor 0233', 1),
(50, '0137', 1022, NULL, NULL, 'Viewsonic VA2248-LED - 0137', 1),
(51, '0234', 1010, '1900-01-01', '0.00', 'Dell 19" Monitor 0234', 1),
(52, '0235', 1010, '1900-01-01', '0.00', 'Dell 19" Monitor 0235', 1),
(53, '0134', 1010, NULL, NULL, 'Dell 19" Monitor 0134', 0),
(54, '0135', 1022, NULL, NULL, 'Viewsonic VA2248-LED - 0135', 1),
(55, '0236', 3, '1900-01-01', '0.00', 'Samsung S24B150BL - 0236', 1),
(56, '001049201D9A', 1008, '1900-01-01', '0.00', 'Shortel 230 - 1D9A', 1),
(57, '0010492015AE', 1008, '1900-01-01', '0.00', 'Shortel 230 - 15AE', 1),
(93, '0269', 1029, '1900-01-01', '0.00', 'TP-Link Switch - 0269', 0),
(94, '0058', 1030, NULL, NULL, 'WS0058', 1),
(95, '0270', 1031, NULL, NULL, 'MeetingRoom3', 1),
(96, '0243', 1032, NULL, NULL, 'MeetingRoom2', 1),
(97, '0271', 1027, NULL, NULL, 'Dynamode SW80010-D Switch - 0271', 0),
(123, '0281', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0281', 0),
(124, '0282', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0282', 1),
(125, '0283', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0283', 0),
(126, '0284', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0284', 1),
(127, '0285', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0285', 1),
(128, '0286', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0286', 1),
(129, '0287', 1045, '2014-07-18', '104.50', 'Philips 23.6" Monitor 0287', 1),
(143, '0280', 1, '2014-07-03', '403.80', 'WS0280', 1),
(144, '0296', 1, '2014-07-03', '403.80', 'WS0296', 1),
(145, '0297', 1, '2014-07-03', '403.80', 'WS0297', 1),
(146, '0298', 1, '2014-07-03', '403.80', 'WS0298', 1),
(147, '0299', 1, '2014-07-03', '403.80', 'WS0299', 1),
(148, '0052', 1036, '1900-01-01', '0.00', 'WS0052', 1),
(168, '0312', 1047, NULL, NULL, 'Epson White HD - 0312', 1),
(169, '0201', 1049, '1900-01-01', '0.00', 'Ipad 4 - 0201', 0),
(170, 'HP27J-2C496-83KXB-RGMX6-8QJQG', 1020, '1900-01-01', '0.00', 'MS Office for Jonny D', 1),
(171, '7N4QY-DFGWD-P6662-CFCHG-QYFP2', 1021, '1900-01-01', '0.00', 'MS Office for WS0215 (Simeon Laptop)', 1),
(172, '0140', 1022, '1900-01-01', '0.00', 'Viewsonic VA2248-LED - 0140', 1),
(198, '0109', 1037, '1900-01-01', '0.00', 'WS0109', 1),
(199, '0324', 1052, '1900-01-01', '0.00', 'Philips 23.6" Monitor 0324', 1)
;
CREATE TABLE [Asset-User]
([ID] int, [Asset_ID] int, [User_ID] int, [Sign_Out_Date] datetime, [Return_Date] datetime, [Perm_Signout] int)
;
INSERT INTO [Asset-User]
([ID], [Asset_ID], [User_ID], [Sign_Out_Date], [Return_Date], [Perm_Signout])
VALUES
(2, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(3, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(4, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(5, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(6, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(7, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(8, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(9, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(10, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(11, 1, 1, '2014-03-29 00:00:00', '2014-03-29 00:00:00', 0),
(1002, 1, 1, '2014-04-01 00:00:00', '2014-04-01 00:00:00', 0),
(1003, 1, 1, '2014-01-01 00:00:00', '2014-01-01 00:00:00', 1)
;
CREATE TABLE Company_Users
([ID] int, [Name] varchar(14), [Domain_Username] varchar(14), [Dept] varchar(16), [Email] varchar(25), [DD_Ext] int, [Job_Title] varchar(30), [Deleted_Left] int)
;
INSERT INTO Company_Users
([ID], [Name], [Domain_Username], [Dept], [Email], [DD_Ext], [Job_Title], [Deleted_Left])
VALUES
(1, 'Neil Smithson', 'Neil.Smithson', '2nd Line Support', 'neil.smithson#dezrez.com', 3041, 'Second Line Support Technician', 0)
;
CREATE TABLE Global_Types
([ID] int, [Name] varchar(13), [Description] varchar(54))
;
INSERT INTO Global_Types
([ID], [Name], [Description])
VALUES
(1, 'PC', 'Desktop PC')
;
This is not really an answer but will show you how you could rework this query using aliases and the (not really) newer join style.
SELECT au.ID
, au.Asset_ID
, a.ID
, a.Signed_Out
, a.Asset_Tag_Serial_Num
, a.Name_Hostname
, a.Type_ID
, at.ID
, at.Name_Model
, au.User_ID
, cu.ID
, au.Sign_Out_Date
, au.Return_Date
, au.[Perm_Signout?]
FROM [Asset-User] au
join Assets a on au.Asset_ID = a.ID
join Asset_Type at on a.Type_ID = at.ID
join Company_Users cu on au.User_ID = cu.ID
WHERE au.User_ID = '1'
AND a.Signed_Out = '1'