How Can I Handle SQL Column Names That Look Like SQL Keywords?

Cleverly deal with column names similar to SQL keywords

In database design, if column names accidentally overlap with SQL reserved words, SQL keyword conflicts will occur, leading to query errors. For example, the column name "from" conflicts with the SQL keyword.

To solve this problem, you can use square brackets to enclose the column name: SELECT [from] FROM TableName; This clearly tells SQL Server that you are referring to the column name, not the keyword.

Another method is to add the table name before the column name: SELECT table.[from] FROM table; This method is especially effective when querying multiple tables to avoid ambiguity.

Here are some examples:

<code class="language-sql">-- 使用方括号
SELECT [from] FROM TableName;

-- 使用表名前缀
SELECT customer.[contact_info] FROM customer;</code>

With these tips, you can effectively avoid SQL errors caused by keyword conflicts and ensure correct execution of queries.

The above is the detailed content of How Can I Handle SQL Column Names That Look Like SQL Keywords?. For more information, please follow other related articles on the PHP Chinese website!