Answer / mala yadav

select command is used to fetch the result from the table ,
but of u want the combine results from more than 1 table
then in this case we use JOINS rather than a single table
select statement.

In joins u can join upto 2 to 61 tables to get tha required
result.

joins are of 5 types
- inner join
- self join
- cross join
- left outer join
- right outer join

Answer / vishal

if u donot know join means u always working in one table but
always single table is not enough to give the result than
comes the concept of joins in which two table we join must
have a column same on the basis of the table are join. join
are of various type such as left outer, right outer ,inner
join etc

Can varchar be primary key?

1 Answers  

---

How do I find mysql database?

1 Answers  

---

What are numeric data types?

1 Answers  

---

How to add a new column to an existing table in mysql?

1 Answers  

---

What is a tinyint?

1 Answers  

---

How do I start mysql server?

1 Answers  

---

What is the different between NOW() and CURRENT_DATE()?

1 Answers  

---

What is pdo in mysql?

1 Answers  

---

Explain MySQL optimization?

1 Answers  

---

What are the functions in mysql?

1 Answers  

---

What is slow query log in mysql?

1 Answers  

---

What is the purpose of mysql database?

1 Answers  

---