insert interview questions
Top insert frequently asked interview questions
I am looking for a Javascript array insert method, in the style of:
arr.insert(index, item)
Preferably in jQuery, but any Javascript implementation will do at this point.
Source: (StackOverflow)
I have a table test(id,name)
.
I need to insert values like: user's log
, 'my user'
, customer's
.
insert into test values (1,'user's log');
insert into test values (2,''my users'');
insert into test values (3,'customer's');
I am getting an error if I run any of the above statements.
If there is any method to do this correctly please share. I don't want any prepared statements.
Is it possible using sql escaping mechanism?
Source: (StackOverflow)
I have 1-many number of records that need to be entered into a table. What is the best way to do this in a query? Should I just make a loop and insert one record per iteration? Or is there a better way?
Source: (StackOverflow)
How can I insert a new item into an array on any position, for example in the middle of array?
Source: (StackOverflow)
I have a very complex CTE and I would like to insert the result into a physical table.
Is the following valid?
INSERT INTO dbo.prf_BatchItemAdditionalAPartyNos
(
BatchID,
AccountNo,
APartyNo,
SourceRowID
)
WITH tab (
-- some query
)
SELECT * FROM tab
I am thinking of using a function to create this CTE which will allow me to reuse. Any thoughts?
Source: (StackOverflow)
With MySQL, if I have a field, of say logins, how would I go about updating that field by 1 within a sql command?
I'm trying to create an INSERT query, that creates firstName, lastName and logins. However if the combination of firstName and lastName already exists, increment the logins by 1.
so the table might look like this..
firstName----|----lastName----|----logins
John Jones 1
Steve Smith 3
I'm after a command that when run, would either insert a new person (i.e. Tom Rogers) or increment logins if John Jones was the name used..
Source: (StackOverflow)
I am using SQL Server 2008 Management Studio and have a table I want to migrate to a different db server.
Is there any option to export the data as an insert into SQL script??
Source: (StackOverflow)
Assume a table structure of MyTable(KEY, datafield1, datafield2...)
.
Often I want to either update an existing record, or insert a new record if it doesn't exist.
Essentially:
IF (key exists)
run update command
ELSE
run insert command
What's the best performing way to write this?
Source: (StackOverflow)
I am currently using this type of SQL on MySQL to insert multiple rows of values in one single query:
INSERT INTO `tbl` (`key1`,`key2`) VALUES ('r1v1','r1v2'),('r2v1','r2v2'),...
On the readings on PDO, the use prepared statements should give me a better security than static queries.
I would therefore like to know whether it is possible to generate "inserting multiple rows of values by the use of one query" using prepared statements.
If yes, may I know how can I implement it?
Source: (StackOverflow)
Ok, so lets say I am doing a mysql INSERT
into one of my tables and the table has the column item_id
which is set to autoincrement
and primary key
.
How do I get the query to output the value of the newly generated primary key item_id
in the same query?
Currently I am running a second query to retrieve the id but this hardly seems like good practice considering this might produce the wrong result...
If this is not possible then what is the best practice to ensure I retrieve the correct id?
Source: (StackOverflow)
While executing an INSERT
statement with many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
ON DUPLICATE KEY UPDATE
which implies an unnecessary update at some cost, or
INSERT IGNORE
which implies an invitation for other kinds of failure to slip in unannounced.
Am I right in these assumptions? What's the best way to simply skip the rows that might cause duplicates and just continue on to the other rows?
Source: (StackOverflow)
I'm passing a large dataset into a mysql table via php using insert commands and I'm wondering if its possible to insert approximately 1000 rows at a time via a query other than appending each value on the end of an mile long string and then executing it. I am using the codeigniter framework so its functions are also available to me.
Source: (StackOverflow)
If I have an insert statement such as:
INSERT INTO MyTable
(
Name,
Address,
PhoneNo
)
VALUES
(
'Yatrix',
'1234 Address Stuff',
'1112223333'
)
How do I set @var INT
to the new row's identity value (called Id
) using the OUTPUT clause? I've seen samples of putting INSERTED.Name into table variables, for example, but I can't get it into a non-table variable.
I've tried OUPUT INSERTED.Id AS @var
, SET @var = INSERTED.Id
, but neither have worked.
Thanks in advance.
Source: (StackOverflow)
This question already has an answer here:
I have multiple set of data to insert at once, say 4 rows. My table has three columns: Person
, Id
and Office
.
INSERT INTO MyTable VALUES ("John", 123, "Lloyds Office");
INSERT INTO MyTable VALUES ("Jane", 124, "Lloyds Office");
INSERT INTO MyTable VALUES ("Billy", 125, "London Office");
INSERT INTO MyTable VALUES ("Miranda", 126, "Bristol Office");
Can I insert all 4 rows in a single SQL statement?
Source: (StackOverflow)
I know I've done this before years ago, but I can't remember the syntax, and I can't find it anywhere due to pulling up tons of help docs and articles about "bulk imports".
Here's what I want to do, but the syntax is not exactly right... please, someone who has done this before, help me out :)
INSERT INTO dbo.MyTable (ID, Name)
VALUES (123, 'Timmy'),
(124, 'Jonny'),
(125, 'Sally')
I know that this is close to the right syntax. I might need the word "BULK" in there, or something, I can't remember. Any idea?
EDIT: Particularly, I need this for a SQL Server 2005 database. I've tried this code, to no avail:
DECLARE @blah TABLE
(
ID INT NOT NULL PRIMARY KEY,
Name VARCHAR(100) NOT NULL
)
INSERT INTO @blah (ID, Name)
VALUES (123, 'Timmy')
VALUES (124, 'Jonny')
VALUES (125, 'Sally')
SELECT * FROM @blah
I'm getting Incorrect syntax near the keyword 'VALUES'.
Source: (StackOverflow)