Hi guys, in this lesson we will talk about basic SQL queries. SQL is structured query language for relational databases. With using SQL we can do every database operations to use SQL. First of all we need a database. To create database with SQL we can use query database, if not exists database name. This query means if database is not created before database will be created, as the VNA.
Relational databases are constructed from tables to create a table with eschete. We can use CREATE TABLE, table name and columns with data types. In a relational database tables. Primary Key is used for unique identifiers for table rows. We can also delete tables with a scare. To do it, we can use DROP TABLE table name.
After table is created, we can insert new rows to table with insert query. in SQL, insert query works like that. Insert into table name columns and lists. Like insertion, we can also delete rows in s here. To do it, we can use delete from table name and their condition. Or to delete all rows of table we can use tonight at will class table me.
After insertion, we can write silly queries in SQL. To do it, we can use silic plus column names or star from table name and their condition. Of course, there are other many things in SQL, but for beginning this will be enough. That's all. Thank you.