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循環查詢結果與在Postgres中明確聲明的遊標循環之間有什麼區別?循環查詢結果隱式創建遊標?循環查詢結果與在Postgres中循環顯式聲明的遊標
循環執行的查詢結果:
FOR v_employee IN
SELECT *
FROM employee
WHERE ...
LOOP
-- Do something with v_employee
END LOOP;
循環執行明確宣佈光標:
FOR v_employee IN my_cursor
LOOP
-- Do something with v_employee
END LOOP;