by: Damien Cobbs |
last post by:
Is there a way to remove duplicate rows from a table that does not
have a primary key leaving one copy of the row without comparing each
column to each other as suggested by the code example below:...
|
by: Ghulam Farid |
last post by:
Hi
i have a table with primary key defined on col1 and col2. now i want to
have col3 also included in primary key. when i alter the table it gives
me error for duplicate rows. there is an option...
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by: serge |
last post by:
I ran into a table that is used a lot. Well less than
100,000 records. Maybe not a lot of records but i believe
this table is used often. The table has 26 fields, 9 indexes
but no Primary Key at...
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by: yongsing |
last post by:
I have two tables as shown below (only relevant columns shown). The
second table is dependent on the first one.
CREATE TABLE PARENTTABLE (
...
SERIAL CHAR(12) NOT NULL,
ENDDATE TIMESTAMP NOT...
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by: Thomas A. Anderson |
last post by:
I am a bit confused in creating a composite primary key. I have three table
with two of the tables containing primary keys. I have two of the tables
(each with a primary key) having one to many...
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by: frank |
last post by:
I have two DataTables, A and B. Both have the primary key "CID". How do I
remove all entries in Table A from Table B (with the same PK)?
|
by: TaeHo Yoo |
last post by:
I have a table that has more than 1 milion rows so practically it is
impossible to remove all duplicate rows by hand.
Could you help me to remove those duplicate rows at all?
This table doesn't...
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by: Steve |
last post by:
How I can remove an AutoGenerated column? I wnat to inlcude the primary key
in the resultset for creating some custom LinkButtons, but I don't want it
(the PK) displayed in the DataGrid. I tried...
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by: Paul Hunter |
last post by:
I am new to databases and thus to Access. I have a situation where I am
trying to figure out how to key some tables I am working with. Consider that
I have a database of my own records which are...
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by: Peter |
last post by:
I am interested in informed feedback on the use of Constraints, Primary Keys
and Unique.
The following SQL statement creates a Bands tables for a database of
bookings Bands into Venues, where the...
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by: Charles Arthur |
last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
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by: aa123db |
last post by:
Variable and constants
Use var or let for variables and const fror constants.
Var foo ='bar';
Let foo ='bar';const baz ='bar';
Functions
function $name$ ($parameters$) {
}
...
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by: ryjfgjl |
last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
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by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
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by: Sonnysonu |
last post by:
This is the data of csv file
1 2 3
1 2 3
1 2 3
1 2 3
2 3
2 3
3
the lengths should be different i have to store the data by column-wise with in the specific length.
suppose the i have to...
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by: Hystou |
last post by:
There are some requirements for setting up RAID:
1. The motherboard and BIOS support RAID configuration.
2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
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