In SQL databases, there are several data types available to store different types of data. The specific data types may vary slightly depending on the database management system (DBMS) being used, but I will mention some commonly supported data types in SQL.
- Numeric Data Types:
- Integer (INT): Whole numbers, e.g., 1, 10, -5.
- Decimal/numeric (DECIMAL/NUMERIC): Fixed-point numbers with a specified precision and scale, e.g., 3.14, 100.25.
- Floating-point (FLOAT): Approximate numeric values, e.g., 3.14159, 1.23E-10.
- Character Data Types:
- Character/char (CHAR): Fixed-length character strings, e.g., ‘Hello’, ‘John’.
- Variable-length character strings (VARCHAR): Variable-length character strings, e.g., ‘OpenAI’, ‘SQL’.
- Text (TEXT): Variable-length character strings with a potentially large size, used for storing longer texts.
- Date and Time Data Types:
- Date (DATE): Stores date values in the format YYYY-MM-DD, e.g., ‘2023-05-15’.
- Time (TIME): Stores time values in the format HH:MI:SS, e.g., ’14:30:00′.
- Timestamp (TIMESTAMP): Stores both date and time values, e.g., ‘2023-05-15 14:30:00’.
- Boolean Data Type:
- Boolean (BOOL): Represents true or false values.
- Binary Data Types:
- Binary/varbinary (BINARY/VARBINARY): Stores binary data, such as images or files.
- Blob (BLOB): Similar to varbinary, used for storing large binary objects.
- Other Data Types:
- Money (MONEY): Stores currency values.
- XML (XML): Stores XML data.
- JSON (JSON): Stores JSON data.
These are just some commonly used data types in SQL databases. Some DBMSs may provide additional data types or variations of the mentioned types. It’s always a good practice to refer to the specific documentation of the database you are using to get the complete list of supported data types.
SQL databases support various data types that can be used to store different types of data. Here are some of the commonly used data types in SQL:
Integer: An integer is a whole number without a decimal point. Examples of integer data types include TINYINT, SMALLINT, INT, and BIGINT.
Decimal/numeric: Decimal or numeric data types are used to store decimal values with a fixed precision and scale. Examples of decimal/numeric data types include DECIMAL and NUMERIC.
Char/varchar: Character data types are used to store strings of characters, such as text or words. Examples of character data types include CHAR and VARCHAR.
Date/time: Date and time data types are used to store date and time values. Examples of date/time data types include DATE, TIME, DATETIME, and TIMESTAMP.
Boolean: Boolean data types are used to store true/false or yes/no values. In SQL, boolean values are often represented as 1 for true and 0 for false.
Binary: Binary data types are used to store binary data, such as images or files. Examples of binary data types include BLOB and VARBINARY.
XML: XML data types are used to store XML data in the database.
JSON: JSON data types are used to store JSON data in the database.
Geospatial: Geospatial data types are used to store geographical data, such as latitude and longitude coordinates.
These are just a few examples of the data types that can be used in SQL databases. Different databases may have their own variations of these data types, and some may support additional data types not listed here.