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String for inserting data with sub-select into database [closed]

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I'm new to C#. I would like to insert data with sub-select into my SQL Server database, I need help to write the string in C# for the following script in SQL Server.
I have two tables, products and category with foreign key between them and a temporary table Mytemp:
CREATE TABLE MyTemp(ID int)
INSERT INTO products (productName, price)
OUTPUT inserted.ID_ProductName
INTO MyTemp
VALUES ('Orange', '2')
INSERT INTO category (ID_productName, Category, Description)
VALUES
((SELECT ID FROM MyTemp), 'Fruits', 'DryFruits');
DROP TABLE MyTemp

You don't need a temp table for this, you can just do it this way:
INSERT INTO products (productName, price)
VALUES ('Orange', '2');
INSERT INTO category (ID_productName, Category, [Description])
VALUES (SCOPE_IDENTITY(), 'Fruits', 'DryFruits');

Storing attendance data in SQL [closed]

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Bit of a carry on from this question here: Database design for school attendance system
I am currently doing something similar but have a few additional questions. So the school has approx 200 students but this is constantly changing. They attend for roughly 200 days and its required to keep the attendance data for 7 years. This is my create table statement here:
CREATE TABLE attendance (
studentID INTEGER REFERENCES students (studentID),
date DATE,
present BOOLEAN
);
My question is, is this the best way to create the table?
I haven't really done any direct database stuff from a UI before so my proposed solution was:
First a local variable that would use C# DateTime.Today function to get todays date;
Another local variable which would get the StudentID from the UI;
And then the attendance value which is a boolean, again set by the UI and stored as a 0/1;
All of these then combined into the Insert into SQL statement.
Is this the best way? Any tips or help would be appreciated thanks.

I'd propose this table instead:
CREATE TABLE StudentAttendance (
StudentId int NOT NULL REFERENCES Students (StudentId),
Date date NOT NULL,
PRIMARY KEY( StudentId, Date )
)
I don't feel there is a need for a present column because the presence, or lack of, a row can indicate if a Student was present that day or not.
The table has a composite key comprised of StudentId + Date - this means there cannot be duplicate records (i.e. only 1 row per student per day)
"Id" is an abbreviation for Identity, it is not an initialism so it should not be all-uppercase (i.e. use Id instead of ID).
Update
After having read the comments by other users, especially #JNevill, I recognise that you probably would want to store student absence reasons, which means you will need an IsPresent bit column (as a row could now mean an is-present or is-absent) with a Notes nvarchar(max) column, but we can extend this to a tinyint to store an enum value for different types of attendance records:
enum StudentAttendanceType
{
Present = 0,
UnauthorisedAbsence = 1,
AuthorisedAbsence = 2,
MedicalLeave = 3,
// etc...
}
CREATE TABLE StudentAttendance (
StudentId int NOT NULL REFERENCES Students (StudentId),
Date date NOT NULL,
Type tinyint NOT NULL,
Notes nvarchar(max) NOT NULL
PRIMARY KEY( StudentId, Date )
)

How to write query to insert data in two tables having foreign key relations in SQL Server? [closed]

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I have two tables in SQL Server as:
MobileMaster (MobileId int (PK), MobileName varchar)
and
MobileDetails (MobDetailId int (PK), MobileId int (FK), Color char, Ram int, Camera float)
And I have a Windows form with textboxes for Mobile Name, RAM, Camera, Color.
Now I want to insert the data inserted by user, in these tables in such a way that entry should be done in both tables keeping in mind that MobileID from MobileDetails is a foreign key referencing MobileID in the MobileMaster table, and MobileID and MobDetailsID are kept as Identity (auto-increment).
So help me to do this using SQL Server as database and .net as application development platform. I am not able to write query for it which will be executed when user clicks on the Save button.

How to insert date of dirth directly into my database table [closed]

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My question is there any data type is there in MySQL to insert date of birth into the database table directly else which data type i can choose to insert date of birth into the table?

You're looking for a date, so use the data type DATE

Use the DATE datatype. See here: http://dev.mysql.com/doc/refman/5.1/en/datetime.html the DATE type is distinct from DATETIME in that it ignores the time. You must use the YYYY-MM-DD format in your INSERT OR UPDATE SQL if you're not using parameters (which you should be).
CREATE TABLE People (
dateOfBirth DATE NOT NULL
)
INSERT INTO People ( dateOfBirth ) VALUES ( '1966-07-01' )

how to add instantly made rows key to another table.? [closed]

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I have a table named product where there is a field named id its the primary key here. I need to put this key to my another table pro_size_tbl as below
pro_size_tbl
==================
id
productid
sizeid
the matter is when the user adds a product the sizes of the products are saved in session and I am trying to save them in pro_size_tbl by the product key what I just made.
The thing I am doing right now is I am adding the product in the product table and in the next line I am retrieving the max id of the product table and using it as the key for the pro_size_tbl.
My question is is there any better way to do this thing?

This is simple.You can use LAST_INSERT_ID().See this sample:
INSERT INTO table1 (title,userid) VALUES ('test', 1);
SET #last_id_in_table1 = LAST_INSERT_ID();

There is a function LAST_INSERT_ID() which can give you the desired value.
But you need to use right below the insert statement.

owh. from what i understood, u need to put auto generated mysql id to another table?
if so, here is the real deal
$sql_tbl1 = "insert here for first table";
$result_tbl1 = mysql_query($sql_tbl1) or die(mysql_error());
$id = mysql_insert_id();
$sql_tbl2 = "insert here value ($id, 'bla', 'bla')";
mysql_query(sql_tbl2);

LAST_INSERT_ID() function is ok but it is doing the same work as i am doing taking the maximum value.i guess more or less both way are the same.