SQLite Syntax
SQLite is a popular relational database management system that allows you to store and manage data in a structured way. In this tutorial, we will cover the basic syntax for SQL commands in SQLite.
Syntax
The basic syntax for SQL commands in SQLite is as follows:
command [options] [arguments];
The command
is the SQL statement that you want to execute, such as SELECT or INSERT. The options
modify the behavior of the command, such as specifying the order in which results are returned. The arguments
are the data values that you want to operate on, such as the column names or the data to be inserted.
Example
Here is an example of a SQL command in SQLite:
SELECT * FROM table_name;
This command selects all columns and all rows from the table_name
table in the current database.
Output
The output of a SQL command in SQLite depends on the command and the data being queried. For example, the output of the above SELECT statement would be a set of rows and columns returned from the table.
Explanation
In the example above, the command is SELECT
which selects data from a table. The *
next to SELECT
indicates that all columns should be selected. The FROM
keyword specifies the table we want to select data from, in this case, table_name
.
Use
SQL commands in SQLite are used for manipulating data in the database. You can use these commands to create tables, insert data into tables, delete data from tables, and retrieve data from tables.
Important Points
- SQL commands in SQLite are case insensitive, but it is recommended to write commands in uppercase to make them more readable.
- SQL comments begin with
--
. Anything on the same line after--
is treated as a comment and is ignored by SQLite. - Always use single quotes
' '
to enclose string values and double quotes" "
to enclose table or column names. - SQLite commands must be terminated by a semicolon
;
.
Summary
In this tutorial, we learned about the basic syntax for SQL commands in SQLite. We saw an example of a SELECT command that selects all columns and rows from a table and learned about the components of the syntax, including the command, options, and arguments. We also learned about the importance of using correct quotes and how to terminate commands properly with a semicolon.