/**
* Keep a collection of the columns to pass to update if a duplicate key happens, for MySQL-style
* INSERT ... ON DUPLICATE KEY UPDATE ....
*
* @param column the column
* @param expression the expression
*/
public void addAssignmentForDuplicate(Column column, Expression expression) {
if (duplicateKeyAssignmentMap == null) {
duplicateKeyAssignmentMap = New.hashMap();
}
if (duplicateKeyAssignmentMap.containsKey(column)) {
throw DbException.get(ErrorCode.DUPLICATE_COLUMN_NAME_1, column.getName());
}
duplicateKeyAssignmentMap.put(column, expression);
}
