Can you list the main data types for columns in SQL tables?

The main data types for columns in SQL tables include:

• INTEGER — integer values
• REAL or FLOAT — floating-point numbers
• TEXT — text strings
• CHAR(n) — fixed-length string
• VARCHAR(n) — variable-length string with limit
• DATE — date
• DATETIME or TIMESTAMP — date and time
• BOOLEAN — logical type (true/false)
• BLOB — binary data

Specific types and their names may vary slightly across different DBMSs (MySQL, PostgreSQL, SQLite, etc.). For example, PostgreSQL has SERIAL types for auto-increment, and MySQL has ENUM for enumerations.