HELP!, How I Can Describe The Name Of Index Which I Like To Use In SELECT Statement
Sep 19, 2000HELP
Dmitri
ADVERTISEMENT
DESCRIBE Statement
Feb 5, 2008i m working on this query that....." Using Oracle command desc table_name to display the charecterstics of the collection table."
View 4 Replies View RelatedIndex/performance Index For SELECT.... IN Statement
Sep 10, 2007
Hi All,
I 'm working to improve some sql performance.
One of the major syntax inside the SELECT statment is ..
WHERE FIELDA IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='A') AND
WHERE FIELDB IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='B') AND
WHERE FIELDC IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='C') AND
WHERE FIELDD IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='D') AND
WHERE FIELDE IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='E') AND
WHERE FIELDF IN (SELECT PARAVALUE FROM PARATABLE WHERE SESSIONID = "XXXXX" AND PARATYPE='F')
(It's to compare the field content with some user input parameter inside a parameter table... )
I think properly is that the SELECT ... IN is causing much slowness in the sql statement. I have indexed FIELDA , FIELDB, FILEDC etc and those PARAVALUE and PARATYPE in the PARATABLE table. But perfromance is still slow and execution takes >20 seconds for 200000 rows of records.
Do any one know if still any chance to improvide the performance like this?
Much Thanks,
Andy
Should The INDEX Name Be Used In SELECT Statement
Apr 19, 2007I am new to SQL, especially use SQL in VC++ 6.0 framework.
I am told that creating INDEX on field(s) could speed up a query.
if I create a INDEX like the following
<code>
CREATE nonclustered INDEX IX_XYZ on TableA.field1
</code>
Should I use the INDEX name IX_XYZ in some way in the following SELECT statement. Or the following SELECT statement will be carried out automatically based on the INDEX IX_XYZ.
<code>
SELECT * FROM TableA WHERE field1 = xxx
</code>
Index Table1 And Select For 647.600 Records.. It Is So Slow.. But I Have No Index :)???
Jun 20, 2008hello friends
i have table1 and 200 coulumn of table1 :) i have 647.600 records. i entered my records to table1 with for step to code lines in one day :)
i select category1 category2 and category3 with select code but i have just one index.. it is productnumber and it is primarykey..So my select code lines is so slow.. it is 7-9 second.. how can i select in 0.1 second ? Should i create index for category1 and category2 and category3 ? But i dont know create index.. My select code lines is below.. Could you learn me and show me index for it ?? or Could you learn me and show me fast Select code lines and index or etc ??? Also my search code line have a dangerous releated to attaching table1 with hackers :)
cheersi send 3 value of treview1 node and childnode and child.childnode to below page.aspx :)
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Me.IsPostBack Then
If Request("TextBox1") IsNot Nothing ThenTextBox1.Text = Request("TextBox1")
End If
If Request("TextBox2") IsNot Nothing ThenTextBox2.Text = Request("TextBox2")
End If
If Request("TextBox3") IsNot Nothing ThenTextBox3.Text = Request("TextBox3")
End If
End If
Dim searchword As String
If Request("TextBox3") = "" And Request("TextBox2") = "" Then
searchword = "Select * from urunlistesi where kategori= '" & Request("TextBox1") & "'"
End If
If Request("TextBox3") = "" Then
searchword = "Select * from urunlistesi where kategori= '" & Request("TextBox1") & "' and kategori1= '" & Request("TextBox2") & "'"
End If
If Request("TextBox3") <> "" And Request("TextBox2") <> "" And Request("TextBox1") <> "" Then
searchword = "Select * from urunlistesi where kategori= '" & Request("TextBox1") & "' and kategori1= '" & Request("TextBox2") & "' and kategori2= '" & Request("TextBox3") & "'"
End If
SqlDataSource1.SelectCommand = searchword
End Sub
Select Statement Within Select Statement Makes My Query Slow....
Sep 3, 2007Hello... im having a problem with my query optimization....
I have a query that looks like this:
SELECT * FROM table1
WHERE location_id IN (SELECT location_id from location_table WHERE account_id = 998)
it produces my desired data but it takes 3 minutes to run the query... is there any way to make this faster?... thank you so much...
Plz Help!! I M Trying To Describe Question More Clearly
Jul 8, 2004hi @ll...
Plz Plz help me out.!!!!!!!!
my query is that in my database i've a table say Tb1 and another table called Tb2.
in TB1 there is a field called companyID (the data is for e.g "001")
similarly in TB2 there is a filed called productID (the data is for example "01")
now how can i create a field in another table say TB3 with a field called UserID and the data should be like the companyID from TB1 + productID from Tb2. The data should come like this for example " 001-01 ".
Describe Table
Oct 18, 2004Hi Guys,
What is the equivalent of Describe table of Oracle in SQL server.
I want to see the table fields for a table in SQL server any command?????
TIA
MS Equivelant To MySQL DESCRIBE?
Feb 23, 2006The title pretty much says it all. How do I get a list of columns from a specified table?
View 1 Replies View RelatedHow To Describe Table Schema
Mar 15, 2014I am more familiar with writing SQL for Oracle than MS SQL Server. Within Oracle there is a simple command, 'Describe', which actually shows the data types, and whether or not an attribute accepts NULLS.
MS SQL Server does appear to support such a command, however I am looking for a way to describe the attributes of tables nonetheless.
What Is The SQL Server Equivalent To DESCRIBE
Nov 3, 2005In ORACLE, I can use DESCRIBE PS_JOB to see the columns for that record. What is the SQL-Server equivalent?
TIA,
Joe
Multiple Tables Used In Select Statement Makes My Update Statement Not Work?
Aug 29, 2006I am currently having this problem with gridview and detailview. When I drag either onto the page and set my select statement to pick from one table and then update that data through the gridview (lets say), the update works perfectly. My problem is that the table I am pulling data from is mainly foreign keys. So in order to hide the number values of the foreign keys, I select the string value columns from the tables that contain the primary keys. I then use INNER JOIN in my SELECT so that I only get the data that pertains to the user I am looking to list and edit. I run the "test query" and everything I need shows up as I want it. I then go back to the gridview and change the fields which are foreign keys to templates. When I edit the templates I bind the field that contains the string value of the given foreign key to the template. This works great, because now the user will see string representation instead of the ID numbers that coinside with the string value. So I run my webpage and everything show up as I want it to, all the data is correct and I get no errors. I then click edit (as I have checked the "enable editing" box) and the gridview changes to edit mode. I make my changes and then select "update." When the page refreshes, and the gridview returns, the data is not updated and the original data is shown. I am sorry for so much typing, but I want to be as clear as possible with what I am doing. The only thing I can see being the issue is that when I setup my SELECT and FROM to contain fields from multiple tables, the UPDATE then does not work. When I remove all of my JOIN's and go back to foreign keys and one table the update works again. Below is what I have for my SQL statements:------------------------------------------------------------------------------------------------------------------------------------- SELECT:SELECT People.FirstName, People.LastName, People.FullName, People.PropertyID, People.InviteTypeID, People.RSVP, People.Wheelchair, Property.[House/Day Hab], InviteType.InviteTypeName FROM (InviteType INNER JOIN (Property INNER JOIN People ON Property.PropertyID = People.PropertyID) ON InviteType.InviteTypeID = People.InviteTypeID) WHERE (People.PersonID = ?)UPDATE:UPDATE [People] SET [FirstName] = ?, [LastName] = ?, [FullName] = ?, [PropertyID] = ?, [InviteTypeID] = ?, [RSVP] = ?, [Wheelchair] = ? WHERE [PersonID] = ? ---------------------------------------------------------------------------------------------------------------------------------------The only fields I want to update are in [People]. My WHERE is based on a control that I use to select a person from a drop down list. If I run the test query for the update while setting up my data source the query will update the record in the database. It is when I try to make the update from the gridview that the data is not changed. If anything is not clear please let me know and I will clarify as much as I can. This is my first project using ASP and working with databases so I am completely learning as I go. I took some database courses in college but I have never interacted with them with a web based front end. Any help will be greatly appreciated.Thank you in advance for any time, help, and/or advice you can give.Brian
View 5 Replies View RelatedHow Do You Describe A Table's Structure In SQL Server?
Apr 16, 2004Oracle has a similar function, DESC, to diplay the table structure. Can't figure it out in SQL Server.
ddave
Whats The Query For Describe A Database
Jun 12, 2008Hi to All,
I want to know a query by which i can get the whole structure of my DataBase -
eg. it should give me all table names and structure which exists in this particular database .....
Thanks
Does DESC/DESCRIBE Have An Equivalent In Transact-SQL
May 7, 2008Hi,
I have been training in SQL on MySQL, and now that I am on TSQL, I can't seem to find an equivalent to the command:
Code Snippet
DESC table_name;--OR
DESCRIBE table_name;
In MySQL, either command returns a list of the columns of the table, as well specifications about these columns (whether or not they can accept NULL values, their default values, etc.)
SQL Server 2012 :: Create Dynamic Update Statement Based On Return Values In Select Statement
Jan 9, 2015Ok I have a query "SELECT ColumnNames FROM tbl1" let's say the values returned are "age,sex,race".
Now I want to be able to create an "update" statement like "UPATE tbl2 SET Col2 = age + sex + race" dynamically and execute this UPDATE statement. So, if the next select statement returns "age, sex, race, gender" then the script should create "UPDATE tbl2 SET Col2 = age + sex + race + gender" and execute it.
Using Conditional Statement In Stored Prcodure To Build Select Statement
Jul 20, 2005hiI need to write a stored procedure that takes input parameters,andaccording to these parameters the retrieved fields in a selectstatement are chosen.what i need to know is how to make the fields of the select statementconditional,taking in consideration that it is more than one fieldaddedfor exampleSQLStmt="select"if param1 thenSQLStmt=SQLStmt+ field1end ifif param2 thenSQLStmt=SQLStmt+ field2end if
View 2 Replies View RelatedTSQL - Use ORDER BY Statement Without Insertin The Field Name Into The SELECT Statement
Oct 29, 2007Hi guys,
I have the query below (running okay):
Code Block
SELECT DISTINCT Field01 AS 'Field01', Field02 AS 'Field02'
FROM myTables
WHERE Conditions are true
ORDER BY Field01
The results are just as I need:
Field01 Field02
------------- ----------------------
192473 8461760
192474 22810
Because other reasons. I need to modify that query to:
Code Block
SELECT DISTINCT Field01 AS 'Field01', Field02 AS 'Field02'
INTO AuxiliaryTable
FROM myTables
WHERE Conditions are true
ORDER BY Field01
SELECT DISTINCT [Field02] FROM AuxTable
The the results are:
Field02
----------------------
22810
8461760
And what I need is (without showing any other field):
Field02
----------------------
8461760
22810
Is there any good suggestion?
Thanks in advance for any help,
Aldo.
How To Write Select Statement Inside CASE Statement ?
Jul 4, 2006Hello friends,
I want to use select statement in a CASE inside procedure.
can I do it? of yes then how can i do it ?
following part of the procedure clears my requirement.
SELECT E.EmployeeID,
CASE E.EmployeeType
WHEN 1 THEN
select * from Tbl1
WHEN 2 THEN
select * from Tbl2
WHEN 3 THEN
select * from Tbl3
END
FROM EMPLOYEE E
can any one help me in this?
please give me a sample query.
Thanks and Regards,
Kiran Suthar
Transact SQL :: Update Statement In Select Case Statement
May 5, 2015I am attempting to run update statements within a SELECT CASE statement.
Select case x.field
WHEN 'XXX' THEN
UPDATE TABLE1
SET TABLE1.FIELD2 = 1
ELSE
UPDATE TABLE2
SET TABLE2.FIELD1 = 2
END
FROM OuterTable x
I get incorrect syntax near the keyword 'update'.
Index And Insert Statement
Nov 30, 2001Clearly, a non clustered index can improve the performance of a SELECT statement. Is the same true with an INSERT statement? My contention is that the use of a non clustered index will hurt the performace of an insert statement.
Ideas??
How To Use Select Statement Inside Insert Statement
Oct 20, 2014In the below code i want to use select statement for getting customer
address1,customeraddress2,customerphone,customercity,customerstate,customercountry,customerfirstname,customerlastname
from customer table.Rest of the things will be as it is in the following code.How do i do this?
INSERT INTO EMImportListing ("
sql += " CustId,Title,Description,JobCity,JobState,JobPostalCode,JobCountry,URL,Requirements, "
sql += " IsDraft,IsFeatured,IsApproved,"
sql += " Email,OrgName,customerAddress1,customerAddress2,customerCity,customerState,customerPostalCode,
[code]....
Help With Delete Statement/converting This Select Statement.
Aug 10, 2006I have 3 tables, with this relation:
tblChats.WebsiteID = tblWebsite.ID
tblWebsite.AccountID = tblAccount.ID
I need to delete rows within tblChats where tblChats.StartTime - GETDATE() < 180 and where they are apart of @AccountID. I have this select statement that works fine, but I am having trouble converting it to a delete statement:
SELECT * FROM tblChats c
LEFT JOIN tblWebsites sites ON sites.ID = c.WebsiteID
LEFT JOIN tblAccounts accounts on accounts.ID = sites.AccountID
WHERE accounts.ID = 16 AND GETDATE() - c.StartTime > 180
Select Statement Problem - Group By Maybe Nested Select?
Sep 17, 2007Hey guys i have a stock table and a stock type table and what i would like to do is say for every different piece of stock find out how many are available The two tables are like thisstockIDconsumableIDstockAvailableconsumableIDconsumableName So i want to,Select every consumableName in my table and then group all the stock by the consumable ID with some form of total where stockavailable = 1I should then end up with a table like thisEpson T001 - Available 6Epson T002 - Available 0Epson T003 - Available 4If anyone can help me i would be very appreciative. If you want excact table names etc then i can put that here but for now i thought i would ask how you would do it and then give it a go myself.ThanksMatt
View 2 Replies View RelatedIndex Hint In Delete Statement?
Jul 12, 2006According to what I see in BOL, the following should work:
delete
from dbo.tbl1 WITH (INDEX(idx_un01))
where tbl1_no = 1
Yet when I syntax check this I get:
Msg 1069, Level 15, State 1, Line 2
Index hints are only allowed in a FROM clause.
(Please ignore the fact that index hints are unnecessary / a bad idea / etc.)
CREATE INDEX Statement For SQL Mobile Not Documented?
Nov 16, 2005Hello,
View 5 Replies View RelatedERROR: Year, Month, And Day Parameters Describe An Un-representable DateTime In Oracle Provider For OLE DB
May 8, 2008In my SSIS package I am trying to connect to a database in Oracle 10.2.0.3 using an Oracle Provider for OLE DB.
I get the following error:
at System.DateTime.DateToTicks(Int32 year, Int32 month, Int32 day)
at System.Data.ProviderBase.DbBuffer.ReadDateTime(Int32 offset)
at System.Data.OleDb.ColumnBinding.Value_DBTIMESTAMP()
at System.Data.OleDb.ColumnBinding.Value()
at System.Data.OleDb.OleDbDataReader.GetValues(Object[] values)
at System.Data.ProviderBase.DataReaderContainer.CommonLanguageSubsetDataReader.GetValues(Object[] values)
at System.Data.ProviderBase.SchemaMapping.LoadDataRow()
at System.Data.Common.DataAdapter.FillLoadDataRow(SchemaMapping mapping)
at System.Data.Common.DataAdapter.FillFromReader(DataSet dataset, DataTable datatable, String srcTable, DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue)
at System.Data.Common.DataAdapter.Fill(DataTable[] dataTables, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
at System.Data.OleDb.OleDbConnectionInternal.GetSchemaRowset(Guid schema, Object[] restrictions)
at System.Data.OleDb.OleDbConnection.GetOleDbSchemaTable(Guid schema, Object[] restrictions)
at System.Data.OleDb.OleDbMetaDataFactory.PrepareCollection(String collectionName, String[] restrictions, DbConnection connection)
at System.Data.ProviderBase.DbMetaDataFactory.GetSchema(DbConnection connection, String collectionName, String[] restrictions)
at System.Data.ProviderBase.DbConnectionInternal.GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, String collectionName, String[] restrictions)
at System.Data.OleDb.OleDbConnection.GetSchema(String collectionName, String[] restrictionValues)
at Microsoft.DataWarehouse.Design.OleDbSchema.GetSchema(String collectionName, String[] restrictionValues)
at Microsoft.DataWarehouse.Design.DataSourceConnection.GetSchemaTable(DataTable& dataTable, String collectionName, String[] restrictions)
at Microsoft.DataWarehouse.Design.DataSourceConnection.ConvertGetSchema(DataTable& dataTable, Guid schemaEnum, Object[] restrictions)
at Microsoft.DataWarehouse.Design.DataSourceConnection.GetSchemaTable(DataTable& dataTable, Guid schemaEnum, Object[] restrictions)
at Microsoft.DataTransformationServices.Design.ComboBoxWithTables.GetTableInfos(DataSourceConnection dataSourceConnection, String connectionName)
at Microsoft.DataTransformationServices.Design.ComboBoxWithTables.FillTableOrViewComboBox()
Why this is not working for 10.2?
The same package works fine for Oracle 8.1.7
THANKS FOR YOUR HELP!
SQL Select Statement To Select The Last Ten Records Posted
Aug 6, 2007SELECT Top 10 Name, Contact AS DCC, DateAdded AS DateTimeFROM NameTaORDER BY DateAdded DESC
I'm trying to right a sql statement for a gridview, I want to see the last ten records added to the to the database. As you know each day someone could add one or two records, how can I write it show the last 10 records entered.
SQL Server 2012 :: Using Function In Create Index Statement
Jun 10, 2015Can we use a sql function() in create index as below is giving error , what would be work around if cannt use the function in below scenario
CREATE NONCLUSTERED INDEX [X_ADDRESS_ADDR1_UPPER] ON [dbo].[ADDRESS]
(
UPPER([ADDR_LINE_1]) ASC
)
WITH (SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF) ON [PRIMARY]
GO
Using Select Statement Result In If Statement Please Help
Jul 11, 2007Hello
How can i say this I would like my if statement to say: if what the client types in Form1.Cust is = to the Select Statement which should be running off form1.Cust then show the Cust otherwise INVALID CUSTOMER NUMBER .here is my if statement.
<% If Request.Form("Form1.Cust") = Request.QueryString("RsCustNo") Then%> <%=Request.Params("Cust") %> <% Else %> <p>INVALID CUSTOMER NUMBER</p> <% End If%>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:RsCustNo %>"
ProviderName="<%$ ConnectionStrings:RsCustNo.ProviderName %>" SelectCommand="SELECT [CU_CUST_NUM] FROM [CUSTOMER] WHERE ([CU_CUST_NUM] = ?)">
<SelectParameters>
<asp:FormParameter FormField="Cust" Name="CU_CUST_NUM" Type="String" />
</SelectParameters>
</asp:SqlDataSource>any help would be appreciated
If STATEMENT Within Select Statement Syntax
May 15, 2008Hi,
I am a newbie to this site and hope someone can help....
I have a select statement which I would like to create an extra column and put an if statement in it.... Current syntax is:
if(TL_flag= '1', "yes") as [Trial Leave]
it is coming up with an error.... I can use Select case but I should not need to as this should work?
Any ideas?
How To Get The Index Of Each Row From A SELECT Query In SQL ?
Aug 11, 2005Hi,I am making as SELECT query to fill a repeater, and I need to retrieve the index of each line of the query.ie, I want to get a dataset like :"0", "dataCol1", "dataCol2" for the first line"1", "dataCol1", "dataCol2" for the second line"2", "dataCol1", "dataCol2" for the third lineetc.Anyone knows if there is a sql statement that does it ?ThanksJohann
View 2 Replies View RelatedINSERT INTO SELECT With INDEX
Jan 16, 2007for MS SQL 2000
the following will work if I want to have UNIQUE Users.Name >>
INSERT INTO [Users] (Name)
SELECT Names FROM OtherUsers
where OtherUsers.Names not in (select Name from Users)
but if I have an UNIQUE INDEX on Users
CREATE UNIQUE INDEX [IX_Users] ON [Users] ([Name],[Category]) ON [PRIMARY]
how can I do it ?
INSERT INTO [Users] (Name, Category)
SELECT Names,Categories FROM OtherUsers
where OtherUsers.Names + OtherUsers.Categories not in (select Name, Category from Users) ?
how can I insert it wih an index on 2 or 3 columns ?
thank you for helping