12. Add Multiple Columns in SQLite
    Basic Syntax:Explanation:data_type: The data type of the column (e.g., TEXT, INTEGER, REAL, BLOB).column_name: The name you want to give to the new column
13. Add Column if Missing in SQLite
    Here's the basic syntax:Where:data_type: The data type of the new column (e.g., TEXT, INTEGER, REAL, BLOB).column_name: The name you want to give to the new column
14. Changing Column Types in SQLite3
    Understanding the ALTER TABLE StatementThe ALTER TABLE statement is used to modify the structure of an existing table in SQLite3
15. Rename SQLite Column
    Here's the basic syntax:Replace table_name with the actual name of your table, old_column_name with the current name of the column you want to rename
16. MySQL Column Size Modification
    Here's the basic syntax:Replace table_name with the actual name of your table, column_name with the name of the column you want to modify
17. Add Non-Null Column PostgreSQL
    Replace table_name with the actual name of your table, column_name with the desired name for the new column, and data_type with the appropriate data type (e.g., INTEGER
18. Renaming Columns in MySQL
    The error message "Error renaming a column in MySQL" typically indicates a problem during the process of modifying a table's structure
19. Rename Table in SQL Server
    Understanding the Process:RENAME TO: This clause within the ALTER TABLE statement specifies the new name you want to give to the table
20. Add Columns in MySQL After Specific Column
    Understanding the ALTER TABLE Statement:It allows you to add, drop, or modify columns, change the table's name, or modify its constraints
21. Delete Column in MySQL Table
    Here's the basic syntax:Replace table_name with the actual name of the table you want to modify and column_name with the name of the column you want to delete
22. Adding Identity to Existing Column
    Understanding Identity ColumnsIn SQL, an identity column is a special type of column that automatically generates unique integer values for each new row inserted into a table
23. Dropping and Recreating Indexes: The Workaround for Renaming in MariaDB
    Current Versions (up to MariaDB 10. 5.x): Unfortunately, MariaDB versions up to 10. 5.x don't offer a direct ALTER TABLE command to rename indexes