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T-SQL INSERT

Home » Data Science » Data Science Tutorials » SQL Tutorial » T-SQL INSERT

T-SQL INSERT

Introduction to T-SQL INSERT

T-SQL is a Transact SQL. It is an extension of the SQL language. Similar to SQL, we have data types, functions, index, procedure concepts in the T-SQL. It is a Microsoft product. SQL stands for the structured query language. SQL (structured query language) is common for all RDBMS.

Structured query language (SQL) stands as an intermediate interaction to the databases. We use commands by which we get data from the database. It has INSERT, SELECT, DELETE, DROP, TRUNCATE, and may other commands related to the actions to be done with the data.

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SELECT command selects the data from the table or tables based on the condition. Insert command is used to insert data into the table. Delete command is used to delete a specified row from the table based on the condition. Drop is to totally delete the table along with the schema, we can delete all the rows using the Truncate command as well. In the Truncate command case, the table schema won’t be deleted from the database.

Syntax:

Let us consider the Insert command syntax in T-SQL; – As T-SQL insert is an extension of SQL language the syntax is similar to SQL.

There are two ways we can determine they are stated below:

1. INSERT INTO TABLE_NAME [(column_name1, column_name2, column_name3,...column_nameN)] VALUES (col1_value, col2_value, col3_value,...colN_value);

Above we determine the column list as well if we don’t specify the column and insert it takes the value to ‘NULL’

2. INSERT INTO TABLE_NAME VALUES (col1_value, col2_value, col3_value,...colN_value);

Above syntax all the column data should match is not an error will be thrown.

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How Insert done in T-SQL?

Now let us consider the above two syntaxes and try to insert into the table.

1. INSERT INTO TABLE_NAME [(column_name1, column_name2, column_name3,...column_nameN)] VALUES (col1_value, col2_value, col3_value,...colN_value);

Let us create a table and use the above syntax format and insert data into the table: –

create table Test_insert_command
(
shop_id int,
product_id int,
brand_id int,
Shop_name varchar(20),
quantity int,
price int
);

Now let us insert data into the table:

insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name,quantity,price)
values (1,1,1,'Kellogs',45,45);
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name,quantity,price)
values (2,7,5,'Fantasy Store',75,145);
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name,quantity,price)
values (3,3,2,'Laxshmi store',65,85);
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name,quantity,price)
values (4,4,7,'General store',25,65);
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name,quantity,price)
values (5,5,8,'Corn store',35,75);
select * from Test_insert_command;

In the above insert statement’s we have given all the values and inserted into the table. Result will be as below:

T-SQL INSERT 1

Now let us pass only few column data and see the output:

insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name)
values (6,1,1,'Kels Store');
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name)
values (4,7,5,'Paradise Store');
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name)
values (6,3,2,'Luxury store');
insert into Test_insert_command(shop_id,product_id,brand_id,Shop_name)
values (1,4,7,'General store');
select * from test_insert_command;

Output:

As no data is inserted in the column quantity, price the values are inserted as NULL.

T-SQL INSERT 2

Now let us change the order and insert the data.

insert into Test_insert_command(shop_id,brand_id,Shop_name,product_id)
values (6,1,'Kels Store',9);
insert into Test_insert_command(shop_id,product_id,brand_id, quantity)
values (4,7,5,340);
insert into Test_insert_command(shop_id,product_id,brand_id, price)
values (6,3,2,12);
select * from test_insert_command;

Output 3

Now let us insert in the below format:

Syntax:

INSERT INTO TABLE_NAME VALUES (col1_value, col2_value, col3_value,...colN_value);

Query:

insert into test_insert_command values(3, 7, 5,'Posaman store', 67, 900);
insert into test_insert_command values(9, 3, 7,'man store', 17, 670);
insert into test_insert_command values(4, 10, 2,'saman store', 77, 560);
select * from test_insert_command;

Output:

Output 4

Example

Now let us see another example for the insert command:

create table test_insert
(
stud_id int,
stud_mark int,
stud_subject varchar(10)
);

1. Insert data into the table:

insert into test_insert(stud_id,stud_mark,stud_subject)values (1, 89,'English');
insert into test_insert(stud_id,stud_subject,stud_mark)values (6,'English', 78);
insert into test_insert(stud_subject,stud_id,stud_mark)values ('English', 4, 89);
insert into test_insert values (8, 69,'English');
insert into test_insert values (9, 49,'English');
insert into test_insert values (5, 79,'English');

Let us insert few more rows and perform Select statement for the above table:

insert into test_insert(stud_id,stud_subject)values (16,'English');
insert into test_insert(stud_subject,stud_id)values ('English', 67);
select * from test_insert;

output

Conclusion

T-SQL is a Transact SQL(structured query language). It is an extension of the SQL language(structured query language). Similar to SQL, we have data types, functions, index, procedure concepts in the T-SQL. It is a Microsoft product. SQL stands for structured query language. SQL (structured query language) is common for all RDBMS.

Recommended Articles

This is a guide to T-SQL INSERT. Here we discuss introduction, syntax, How Insert done in T-SQL? and example with code implementation. You may also have a look at the following articles to learn more –

  1. SQL NULLIF()
  2. SQL ROW_NUMBER
  3. SQL NTILE()
  4. SQL DENSE_RANK()

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