SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use

SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use

In MariaDB, you can escape square brackets in a LIKE clause by using the ESCAPE keyword followed by the escape character. The default escape character is a backslash \, but you can specify a different one if needed. Here's how you can do it:

SELECT * FROM MyTable WHERE MyColumn LIKE '%\[%' ESCAPE '\';

In this example:

  • % is a wildcard that matches any sequence of characters.
  • \ is the escape character.
  • \[ represents a literal square bracket [.

Examples

  1. Creating a Table in MariaDB

    Description: Creating a table in MariaDB involves specifying the table name and its columns along with their data types.

    Code:

    CREATE TABLE example_table ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(50), age INT );

  2. Inserting Data into a Table in MariaDB

    Description: To insert data into a table in MariaDB, you need to use the INSERT INTO statement along with the VALUES keyword.

    Code:

    INSERT INTO example_table (name, age) VALUES ('John', 30);

  3. Updating Records in a Table in MariaDB

    Description: Updating records in a table involves using the UPDATE statement along with the SET keyword to specify the new values.

    Code:

    UPDATE example_table SET age = 35 WHERE name = 'John';

  4. Deleting Records from a Table in MariaDB

    Description: Deleting records from a table can be done using the DELETE FROM statement with optional conditions.

    Code:

    DELETE FROM example_table WHERE name = 'John';

  5. Adding a Column to an Existing Table in MariaDB

    Description: To add a new column to an existing table, you can use the ALTER TABLE statement along with the ADD COLUMN clause.

    Code:

    ALTER TABLE example_table ADD COLUMN email VARCHAR(100);

  6. Dropping a Column from an Existing Table in MariaDB

    Description: Dropping a column from a table removes it along with all its data from the table structure.

    Code:

    ALTER TABLE example_table DROP COLUMN email;

  7. Creating a Primary Key Constraint in MariaDB

    Description: Defining a primary key constraint ensures that each row in a table is uniquely identified.

    Code:

    ALTER TABLE example_table ADD PRIMARY KEY (id);

  8. Creating an Index on a Column in MariaDB

    Description: Indexing columns can speed up data retrieval operations. Here's how to create an index on a specific column.

    Code:

    CREATE INDEX idx_name ON example_table (name);

  9. Using Joins to Retrieve Data from Multiple Tables in MariaDB

    Description: Joins are used to combine rows from two or more tables based on a related column between them.

    Code:

    SELECT e.name, e.age, d.department_name FROM employees e INNER JOIN departments d ON e.department_id = d.department_id;

  10. Grouping and Aggregating Data in MariaDB

    Description: Grouping and aggregating data allows you to perform calculations on groups of rows rather than the entire result set.

    Code:

    SELECT department_id, AVG(salary) AS avg_salary FROM employees GROUP BY department_id;

More Tags

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