If you want to filter in each years at the datetime type column as like the "date" type, you will resolve by using this filter hooks. However, because some plugin core sources should be modified, it's not able to work correctly in the current version (2.1.32). In the next version 2.1.33, I'm going to support.

filter_date_type_column.php

<?php
// Note: this code will be enabled since the CDBT plugin version 2.1.33.

function add_filtered_column_sql( $sql, $table_name, $sql_clauses ) {
  $target_tables = [ 'your_table_name' ];
  $filter_date_column = 'date_type_column'; // Column name that you want to filter by the filtering dropdown box
  if ( in_array( $table_name, $target_tables ) && strpos( $sql_clauses[0], $filter_date_column ) !== false ) {
    $select_clause = $sql_clauses[0] .',CAST(YEAR(`'. $filter_date_column .'`) AS CHAR) AS `year`'; // "year" is alias column for filtering 
    $_overwrite_sql = <<< SQL
SELECT %s 
FROM %s
%s
%s %s
SQL;
    $sql = sprintf( $_overwrite_sql, $select_clause, $table_name, $sql_clauses[1], $sql_clauses[2], $sql_clauses[3] );
  }
  return $sql;
}
add_filter( 'cdbt_crud_get_data_sql', 'add_filtered_column_sql', 10, 3 );

function change_custom_filter_option( $component_options, $shortcode_name, $table ){
  $target_tables = [ 'your_table_name' ];
  $target_shortcodes = [ 'cdbt-view' ];
  $filter_alias_column = 'year'; // Filtering alias column defined in the above filter hook 
  if ( in_array( $table, $target_tables ) && in_array( $shortcode_name, $target_shortcodes ) ) {
    $component_options['enableFilter'] = true;
    $component_options['filter_column'] = $filter_alias_column;
    $start_year = 2001; // Start year of the displayed in the pull down lists
    $end_year = intval( date( 'Y' ) );
    for ( $y = $start_year; $y <= $end_year; $y++ ) {
      $component_options['filters'][] = strval( $y );
    }
  }
  return $component_options;
}
add_filter( 'cdbt_shortcode_custom_component_options', 'change_custom_filter_option', 10, 3 );

If you want to work at current plugin version 2.1.32, you should modify of "templates/components/cdbt_table.php" in the plugin directory as following.

Insert below to line 68:

$_list_value = $_list_value === '0' ? $_value[0] : $_list_value;

Modify below to line 808 (809):

      if (item[searchObj.column] === String(searchObj.keyword)) {

Thank you,