To create a table with a column of type XML in a database, the specific SQL syntax may vary slightly depending on the database management system (DBMS) you are using. Below are examples for several popular DBMS:
SQL Server
In SQL Server, you can use the XML data type directly in the table definition. Here's an example:
CREATE TABLE ExampleTable (
ID INT PRIMARY KEY,
Data XML
);
PostgreSQL
PostgreSQL does not have a native XML type but allows you to use the XML data type. Here’s how you can create a table with an XML column:
CREATE TABLE ExampleTable (
ID SERIAL PRIMARY KEY,
Data XML
);
Oracle
In Oracle, you can create a table with an XMLType, which is specifically designed to store XML data:
CREATE TABLE ExampleTable (
ID NUMBER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
Data XMLTYPE
);
MySQL
MySQL does not have a specific XML datatype. You can store XML data in a TEXT type or LONGTEXT type:
CREATE TABLE ExampleTable (
ID INT AUTO_INCREMENT PRIMARY KEY,
Data TEXT
);
SQLite
SQLite does not have a specific XML type either, so you typically store XML data in a TEXT or BLOB column:
CREATE TABLE ExampleTable (
ID INTEGER PRIMARY KEY AUTOINCREMENT,
Data TEXT
);
Summary
- Each DBMS has its syntax and constraints regarding XML data types.
- Review the documentation for your specific database version to understand any limitations, performance implications, or additional functionalities that may be available for handling XML data.