SQL Data Types

SQL Data Types

SQL supports various data types that define the type of data that can be stored in a column of a table. Here's a brief overview of some common SQL data types:

1. Numeric Data Types:

• INT: Integer data type.
• FLOAT: Floating-point number.
• DECIMAL(precision, scale): Fixed-point number with a specified precision and scale.
• NUMERIC(precision, scale): Synonym for DECIMAL.

2. Character String Data Types:

• CHAR(length): Fixed-length character string.
• VARCHAR(length): Variable-length character string with a maximum length.
• TEXT: Variable-length character string with a maximum length that is specified by the DBMS.

3. Date and Time Data Types:

• DATE: Date value.
• TIME: Time value.
• DATETIME: Date and time value.
• TIMESTAMP: Date and time value with a time zone.

4. Boolean Data Type:

• BOOLEAN or BOOL: Boolean value, typically represented as TRUE or FALSE.

5. Binary Data Types:

• BINARY(length): Fixed-length binary string.
• VARBINARY(length): Variable-length binary string with a maximum length.
• BLOB: Binary large object, for storing large binary data.

6. Other Data Types:

• JSON: Stores JSON (JavaScript Object Notation) data.
• XML: Stores XML data.
• ARRAY: Stores an array of values.

Different database management systems may support additional data types, and there might be variations in syntax and behavior between systems. Additionally, some DBMSs offer custom or proprietary data types for specific purposes. It's essential to refer to the documentation of your chosen database system for the most accurate and comprehensive information on data types.