How can I use named parameters with JDBC?

JDBC Named Parameters

JDBC does not inherently support named parameters, where variable names are used instead of positional placeholders. Unlike ADO.NET, which allows queries like "select * from customers where name=@name and city = @city," JDBC relies solely on positional placeholders.

Alternative: JDBCTemplate

However, there are frameworks that extend JDBC to provide named parameter functionality. A popular option is Spring's JDBCTemplate, which eliminates the pain of working with plain JDBC.

NamedParameterJdbcTemplate

Spring's NamedParameterJdbcTemplate provides support for named parameters. Queries can be written like this:

NamedParameterJdbcTemplate jdbcTemplate = new NamedParameterJdbcTemplate(dataSource);

MapSqlParameterSource paramSource = new MapSqlParameterSource();
paramSource.addValue("name", name);
paramSource.addValue("city", city);
jdbcTemplate.queryForRowSet("SELECT * FROM customers WHERE name = :name AND city = :city", paramSource);

By using named parameters with JDBCTemplate, you can write cleaner and more maintainable SQL queries without relying on JDBC's positional placeholder approach.

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