Version 0.3

Q: How to change the format of column names using the schema?

A: In schema definitions, the format of column names can be changed by modifying the implicit instance of Naming.

For example, the default is camel case, but using Naming.PASCAL converts all column names to Pascal case. The sample code below demonstrates setting given Naming = Naming.PASCAL within a table definition, which is automatically applied to column names.

// Schema definition example (changing column name format)
case class User(id: Long, name: String, age: Option[Int])

class UserTable extends Table[User]("user"):
  // Set Naming to change column names to Pascal case
  given Naming = Naming.PASCAL
  
  def id: Column[Long] = bigint()         // Automatically becomes "Id"
  def name: Column[String] = varchar(255)  // Automatically becomes "Name"
  def age: Column[Option[Int]] = int().defaultNull // Automatically becomes "Age"
  
  override def * : Column[User] = (id *: name *: age).to[User]
  
// Usage example: The changed column names are applied in select statements
val userTable: TableQuery[UserTable] = TableQuery[UserTable]
val select = userTable.selectAll

println(select.statement)
// Output example: "SELECT `Id`, `Name`, `Age` FROM user"

This method allows you to change column names in bulk, enabling consistent schema definitions aligned with your project's naming conventions.

References