Delete Duplicate Entries From Tables In My Database Using Query Analyzer

Jun 25, 2004

Hello,





How can I delete duplicate entries from tables in my database using Query Analyzer, as there are many duplicate entries in my tables, I want to delete them.





Thanks in advance,


Uday.

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Sep 3, 2007

I am using Sql Server 2000.
I have a customer table with fields - CustId, Name, Address, City, StdCode, Phone.
I used to insert entries in this table from an excel file.
One excel file will contain thousands of customer.
In this table combination of StdCode and Phone should not be repeated.
If I do it in my VB.Net coding.then application gets drastically slow.
So I want to write a procedure or trigger for this.
Here what I will do, I will send all records into database then this trigger or procedure will check for
any existing entry of combination of StdCode and phone. If entry exists then this will delete new entry
or will not allow this new entry.
Is this possible to do using Trigger or stored procedure?

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SELECT
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[code]...

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enak

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Hi All !

Below is a snippet of MS SQL inside ASP that retieves
Commodity info such as product names and related information and returns the results in an ASP Page. My problem is that with certain searches, elements returned in the synonym field repeat. For instance, on a correct search I get back green, red, blue, and yellow which is correct. On another similar search different commodity say for material, I get Plastic, Glass,Sand - Plastic, Glass,Sand - Plastic Glass Sand. I want to remove the repeating elements returned in this field. I hope this makes sense.

PS I tried to use distinct but with no luck I want just one of each in the example below.

Thanks in Advance!

Scott

==============================

SQL = ""
SQL = "SELECT B.CIMS_MSDS_NUM," & _
"A.COMMODITY_NUMBER, " & _
"B.CIMS_TRADE_NME," & _
"B.CIMS_MFR_NME," & _
"B.CIMS_MSDS_PREP_DTE," & _
"B.APVL_CDE," & _
"COALESCE(C.REGDMATLCD,'?') AS DOTREGD," & _
"COALESCE( D.CIMS_TRADE_SYNM,'NO SYNONYMS') AS SYNONYM, " & _
"A.MSDS_CMDTY_VERIF, " & _
"A.CATALOG_ID " & _
"FROM ( MATEQUIP.VMSDS_CMDTY A " & _
" RIGHT OUTER JOIN MATEQUIP.VCIMS_TRD_PROD_INF B " & _
" ON A.CIMS_MSDS_NUM = B.CIMS_MSDS_NUM " & _
" LEFT OUTER JOIN MATEQUIP.VDOT_TRADE_PROD C " & _
" ON A.CIMS_MSDS_NUM = C.MSDSNUM " & _
" LEFT OUTER JOIN MATEQUIP.VCIMS_TRD_PROD_SYN D " & _
" ON B.CIMS_MSDS_NUM = D.CIMS_MSDS_NUM) "

SQL1 = ""
SQL1 = SQL

SQL = SQL & "WHERE " & Where & " "
==================================

Here is a piece of the problem field, note repeating colors etc.

CCM-PAINTS & COATINGS (1/26/98)F65E36 ORANGE F65W1 GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEF65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEDISAPPROVED BY CCM-PAINTS & COATINGS (1/26/98)F65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65E36 ORANGE F65W1 GLOSS WHITEDISAPPROVED BY CCM-PAINTS & COATINGS (1/26/98)F65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65E36 ORANGE F65W1 GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65A1 WARM GRAY F65L6 TURQUOISEDISAPPROVED BY CCM-PAINTS

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10001 Bill Jones
10002 Joe Smith
10003 Sue Jenkins
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and get a result set of this:

ID fname lname
10002 Joe Smith
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Jan 3, 2007

Hi All,



Below is a snippet of MS SQL inside some VB that retieves
Commodity info such as product names and related information and returns the results in an ASP Page. My problem is that with certain searches, elements returned in the synonym field repeat. For instance, on a correct search I get green, red, blue, and yellow which is correct. On another similar search with different commodity say for material, I get Plastic, Glass,Sand - Plastic, Glass,Sand - Plastic, Glass, Sand. I want to remove the repeating elements returned in this field. IOW, I just need one set of Plastic, Glass and Sand. I hope this makes sense.


Below is the SQL and the results from the returned page.


PS I tried to use distinct but with no luck I want just one of each in the example below.

Thanks in Advance!

Scott

==============================

SQL = ""
SQL = "SELECT B.CIMS_MSDS_NUM," & _
"A.COMMODITY_NUMBER, " & _
"B.CIMS_TRADE_NME," & _
"B.CIMS_MFR_NME," & _
"B.CIMS_MSDS_PREP_DTE," & _
"B.APVL_CDE," & _
"COALESCE(C.REGDMATLCD,'?') AS DOTREGD," & _
"COALESCE( D.CIMS_TRADE_SYNM,'NO SYNONYMS') AS SYNONYM, " & _
"A.MSDS_CMDTY_VERIF, " & _
"A.CATALOG_ID " & _
"FROM ( MATEQUIP.VMSDS_CMDTY A " & _
" RIGHT OUTER JOIN MATEQUIP.VCIMS_TRD_PROD_INF B " & _
" ON A.CIMS_MSDS_NUM = B.CIMS_MSDS_NUM " & _
" LEFT OUTER JOIN MATEQUIP.VDOT_TRADE_PROD C " & _
" ON A.CIMS_MSDS_NUM = C.MSDSNUM " & _
" LEFT OUTER JOIN MATEQUIP.VCIMS_TRD_PROD_SYN D " & _
" ON B.CIMS_MSDS_NUM = D.CIMS_MSDS_NUM) "

SQL1 = ""
SQL1 = SQL

SQL = SQL & "WHERE " & Where & " "
==================================

Here is a piece of the problem field, note repeating colors etc.

CCM-PAINTS & COATINGS (1/26/98)F65E36 ORANGE F65W1 GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEF65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEDISAPPROVED BY CCM-PAINTS & COATINGS (1/26/98)F65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65E36 ORANGE F65W1 GLOSS WHITEDISAPPROVED BY CCM-PAINTS & COATINGS (1/26/98)F65A2 LIGHT GRAY F65L7 PALE BLUEF65A1 WARM GRAY F65L6 TURQUOISEF65B4 SEMI-GLOSS BLACK F65R1 VERMILIONF65B1 GLOSS BLACK F65N11 RICH BROWNF65A49 ASA #49 GRAY F65M1 MAROONF65A4 MACHINE TOOL GRAY F65L10 BRIGHT BLUEF65L4 DARK BLUEF65L3 LIGHT BLUE V65V100 MIXING CLEARF65H1 IVORY F65Y48 LIGHT YELLOWF65G41 FOREST GREEN F65Y44 LEMON YELLOWF65G40 MEDIUM GREEN F65W100 MIXING WHITEF65G39 LIGHT GREEN F65W4 TINTING WHITEF65G16 SEMI-GLOSS MACHINERY GRE F65W3 CUSTOM WHITEF65E37 INTERNATIONAL ORANGE F65W2 SEMI-GLOSS WHITEF65E36 ORANGE F65W1 GLOSS WHITEF65B50 WR. IRON FLAT BLACK F65R2 TARTAR RED DARKF65A1 WARM GRAY F65L6 TURQUOISEDISAPPROVED BY CCM-PAINTS & COATINGS (1/26/98)F65B1 GLOSS BLACK F65N11

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Query Highest Entries From Database - Pls Read More.....

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Hi folks, sorry for the poor explanation.

Im using SQL 2000

I have a database that has a column named 'Initials' in a char in field

I want to be able to return in a query the highest entries if an indiviuals initials & count from the table, so it would display some like this

Initials Count
DRT 51
AMS 49
JJJ 21
PLI 10

Hope u can help, thanks in advance

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Best Method Of Checking For Duplicate Entries In SQL Server

Aug 22, 2007

Here is my situation.  I have a table in my application that pairs users with cars they like.  We'll call this table Favorites.  A user can browse the site and they can designate as many cars they want as favorites.  For example, a user can go to the Honda Accord page and add that as a favorite car and then go to the Toyota Camry page and add that as a favorite car.  However, if he/she goes to that Honda Accord page and tries to click the "Add to Favorites" button again, at the present state of my application, it will just add another entry into the Favorites table with a duplicate pairing.  So, if I were to datalist the table to generate a listing of all favorites belonging to a certain user, he/she may potentially be returned with superfluous duplicate entries.  Not to mention, taking up valuable database space and not looking very professional.
In my Favorites table, the 3 fields are.....favoriteId (set as primary key)userIdcarId
I've been thinking about this for awhile and I've come up with 2 solutions.  I'm a newbie to ASP.NET/programming so I don't have enough insight to make a decision or to even think up of other alternatives.
1) Check proactively by doing a.....SELECT favoriteID FROM Favorites WHERE userId = x and carId = y  (where x and y are variables)If I get a null return, it means I can go ahead and let the user add the car as a favorite in the database.  If I get a valid value, then it means there already exists the same pairing, so I exit out without updating the table.
2) Check reactively by forcing an exception whenever a user tries to enter a duplicate pairing.  I'm not sure how to do this, but perhaps, instead of making "favoriteId" a primary key, perhaps, I can make a primary key pairing of "userId" and "carId".  And by trying to do an insert with a primary key that already exists, we know it won't work since primary keys by definition are unique.
Now, I expect some concurrent users on my site, so I must take into consideration pros and cons of each and determine which is more efficient.  Checking proactively will force a check even if the table does not contain a duplicate pairing of user and car.  However, having a duplicate primary key may be more expensive from a database point of view and may slow down lookups, etc.  Or maybe neither has significant benefits, in which case, I rather go with proactive, since I've already coded it and it works fine.  Or maybe there is a third alternative, which I did not think.  Which method do programmers usually take and which is a better practice?
TIA for your help.

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EntryID -- ID  -- timein -- timeoff
1487   11     2015-05-05 16:33:23   2015-05-05 18:45:26
1623   11     2015-05-05 16:33:23   2015-05-05 18:45:26

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What is the best way to compare two entries in a single table wherethe two fields are "almost" the same?For example, I would like to write a query that would compare thefirst two words in a "company" field. If they are the same, I wouldlike to output them.For example, "20th Century" and "20th Century Fox" in the companyfield would be the same.How do I do this? Do I need to use a cursor? Is it as simple as using"Like?"

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Solution!-Create Access/Jet DB, Tables, Delete Tables, Compact Database

Feb 5, 2007

From Newbie to Newbie,



Add reference to:

'Microsoft ActiveX Data Objects 2.8 Library

'Microsoft ADO Ext.2.8 for DDL and Security

'Microsoft Jet and Replication Objects 2.6 Library

--------------------------------------------------------

Imports System.IO

Imports System.IO.File





Code Snippet

'BACKUP DATABASE

Public Shared Sub Restart()

End Sub



'You have to have a BackUps folder included into your release!

Private Sub BackUpDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BackUpDB.Click
Dim addtimestamp As String
Dim f As String
Dim z As String
Dim g As String
Dim Dialogbox1 As New Backupinfo


addtimestamp = Format(Now(), "_MMddyy_HHmm")
z = "C:Program FilesVSoftAppMissNewAppDB.mdb"
g = addtimestamp + ".mdb"


'Add timestamp and .mdb endging to NewAppDB
f = "C:Program FilesVSoftAppMissBackUpsNewAppDB" & g & ""



Try

File.Copy(z, f)

Catch ex As System.Exception

System.Windows.Forms.MessageBox.Show(ex.Message)

End Try



MsgBox("Backup completed succesfully.")
If Dialogbox1.ShowDialog = Windows.Forms.DialogResult.OK Then
End If
End Sub






Code Snippet

'RESTORE DATABASE

Private Sub RestoreDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles

RestoreDB.Click
Dim Filename As String
Dim Restart1 As New RestoreRestart
Dim overwrite As Boolean
overwrite = True
Dim xi As String


With OpenFileDialog1
.Filter = "Database files (*.mdb)|*.mdb|" & "All files|*.*"
If .ShowDialog() = Windows.Forms.DialogResult.OK Then
Filename = .FileName



'Strips restored database from the timestamp
xi = "C:Program FilesVSoftAppMissNewAppDB.mdb"
File.Copy(Filename, xi, overwrite)
End If
End With


'Notify user
MsgBox("Data restored successfully")


Restart()
If Restart1.ShowDialog = Windows.Forms.DialogResult.OK Then
Application.Restart()
End If
End Sub








Code Snippet

'CREATE NEW DATABASE

Private Sub CreateNewDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles

CreateNewDB.Click
Dim L As New DatabaseEraseWarning
Dim Cat As ADOX.Catalog
Cat = New ADOX.Catalog
Dim Restart2 As New NewDBRestart
If File.Exists("C:Program FilesVSoftAppMissNewAppDB.mdb") Then
If L.ShowDialog() = Windows.Forms.DialogResult.Cancel Then
Exit Sub
Else
File.Delete("C:Program FilesVSoftAppMissNewAppDB.mdb")
End If
End If
Cat.Create("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Program FilesVSoftAppMissNewAppDB.mdb;

Jet OLEDB:Engine Type=5")

Dim Cn As ADODB.Connection
'Dim Cat As ADOX.Catalog
Dim Tablename As ADOX.Table
'Taylor these according to your need - add so many column as you need.
Dim col As ADOX.Column = New ADOX.Column
Dim col1 As ADOX.Column = New ADOX.Column
Dim col2 As ADOX.Column = New ADOX.Column
Dim col3 As ADOX.Column = New ADOX.Column
Dim col4 As ADOX.Column = New ADOX.Column
Dim col5 As ADOX.Column = New ADOX.Column
Dim col6 As ADOX.Column = New ADOX.Column
Dim col7 As ADOX.Column = New ADOX.Column
Dim col8 As ADOX.Column = New ADOX.Column

Cn = New ADODB.Connection
Cat = New ADOX.Catalog
Tablename = New ADOX.Table



'Open the connection
Cn.Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Program FilesVSoftAppMissNewAppDB.mdb;Jet

OLEDB:Engine Type=5")


'Open the Catalog
Cat.ActiveConnection = Cn



'Create the table (you can name it anyway you want)
Tablename.Name = "Table1"


'Taylor according to your need - add so many column as you need. Watch for the DataType!
col.Name = "ID"
col.Type = ADOX.DataTypeEnum.adInteger
col1.Name = "MA"
col1.Type = ADOX.DataTypeEnum.adInteger
col1.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col2.Name = "FName"
col2.Type = ADOX.DataTypeEnum.adVarWChar
col2.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col3.Name = "LName"
col3.Type = ADOX.DataTypeEnum.adVarWChar
col3.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col4.Name = "DOB"
col4.Type = ADOX.DataTypeEnum.adDate
col4.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col5.Name = "Gender"
col5.Type = ADOX.DataTypeEnum.adVarWChar
col5.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col6.Name = "Phone1"
col6.Type = ADOX.DataTypeEnum.adVarWChar
col6.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col7.Name = "Phone2"
col7.Type = ADOX.DataTypeEnum.adVarWChar
col7.Attributes = ADOX.ColumnAttributesEnum.adColNullable
col8.Name = "Notes"
col8.Type = ADOX.DataTypeEnum.adVarWChar
col8.Attributes = ADOX.ColumnAttributesEnum.adColNullable



Tablename.Keys.Append("PrimaryKey", ADOX.KeyTypeEnum.adKeyPrimary, "ID")


'You have to append all your columns you have created above
Tablename.Columns.Append(col)
Tablename.Columns.Append(col1)
Tablename.Columns.Append(col2)
Tablename.Columns.Append(col3)
Tablename.Columns.Append(col4)
Tablename.Columns.Append(col5)
Tablename.Columns.Append(col6)
Tablename.Columns.Append(col7)
Tablename.Columns.Append(col8)



'Append the newly created table to the Tables Collection
Cat.Tables.Append(Tablename)



'User notification )
MsgBox("A new empty database was created successfully")


'clean up objects
Tablename = Nothing
Cat = Nothing
Cn.Close()
Cn = Nothing


'Restart application
If Restart2.ShowDialog() = Windows.Forms.DialogResult.OK Then
Application.Restart()
End If

End Sub








Code Snippet



'COMPACT DATABASE

Private Sub CompactDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles

CompactDB.Click
Dim JRO As JRO.JetEngine
JRO = New JRO.JetEngine


'The first source is the original, the second is the compacted database under an other name.
JRO.CompactDatabase("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Program

FilesVSoftAppMissNewAppDB.mdb; Jet OLEDB:Engine Type=5", "Provider=Microsoft.Jet.OLEDB.4.0;

Data Source=C:Program FilesVSoftAppMissNewAppDBComp.mdb; JetOLEDB:Engine Type=5")


'Original (not compacted database is deleted)
File.Delete("C:Program FilesVSoftAppMissNewAppDB.mdb")


'Compacted database is renamed to the original databas's neme.
Rename("C:Program FilesVSoftAppMissNewAppDBComp.mdb", "C:Program FilesVSoftAppMissNewAppDB.mdb")


'User notification
MsgBox("The database was compacted successfully")

End Sub

End Class

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Sep 11, 2014

i have a table like below

create table staff_attendance
(
attendance_id int,
attendace_date datetime,
staff_id int,
working_year int,
hours int
)

values like

1 2014-06-30 00:00:00.0ST10121
2 2014-06-30 00:00:00.0ST10122
3 2014-06-30 00:00:00.0ST10122 ----same entry like previous one
4 2014-07-01 00:00:00.0ST10121
5 2014-07-01 00:00:00.0ST10122
6 2014-07-02 00:00:00.0ST10121
7 2014-07-02 00:00:00.0ST10122
8 2014-06-30 00:00:00.0ST10221
9 2014-06-30 00:00:00.0ST10222
10 2014-07-01 00:00:00.0ST1022 1
11 2014-07-01 00:00:00.0ST102 22
12 2014-07-02 00:00:00.0ST102 21
13 2014-07-02 00:00:00.0ST102 22

I Need to find the duplicate rows like same entries which is having more than 1 rows.... how do i find?

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Rahul Arora
07 Batch
NCCE Israna,


######################
IMPOSSIBLE = I+M+POSSIBLE

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