SELECT
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 1 THEN ID END) AS SEGUNDA,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 2 THEN ID END) AS TERCA,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 3 THEN ID END) AS QUARTA,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 4 THEN ID END) AS QUINTA,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 5 THEN ID END) AS SEXTA,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 6 THEN ID END) AS SABADO,
  COUNT(CASE WHEN EXTRACT(WEEKDAY FROM DATA) = 7 THEN ID END) AS DOMINGO
FROM
  ATENDIMENTO
