How to Access MySQL Columns with Hyphens from Java Code?

Accessing Column Names with Hyphens in MySQL Databases from Java Code

In MySQL databases, column names can contain hyphens (-). However, when attempting to access these columns from Java code, the presence of hyphens can disrupt the convention used to identify column names.

When Java tries to access a column with a hyphenated name, the hyphen is interpreted as a character separator. This results in the name being split at the hyphen, leading to errors when trying to locate the column.

To prevent this issue, there are two ways to retain the hyphens in column names:

1. Using Back-ticks (Grave Accents):

   Enclose the hyphenated column names within back-ticks (`) when accessing them from Java code. Back-ticks allow you to use special characters and spaces in column names without breaking the convention. For example:

   ResultSet rs = statement.executeQuery("SELECT * FROM `air_port`");

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2. Querying with Column Aliases:

   Instead of using hyphenated column names directly in your queries, create column aliases without hyphens. This allows you to access the columns using the alias names, which do not contain hyphens. For example:

   SELECT air_port AS airport ...

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Using either method will ensure that the hyphenated column names are properly identified and accessed from Java code. The choice of method depends on the specific requirements of your application.

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