CONTENTS"[VARCHAR2,4000], "A"."N"[NUMBER,22], "B"."ID"[NUMBER,22],
"B"."...CONTENTS"[VARCHAR2,4000], "B"."N"[NUMBER,22],
"A"."CONTENTS"[VARCHAR2,4000], "A"."...CONTENTS"[VARCHAR2,4000]
3 - "A"."ID"[NUMBER,22], "A"."N"[NUMBER,22], "A"."...CONTENTS"[VARCHAR2,4000]
可见,没有使用动态采样,而且生成的执行计划是错误的,因为大表(10W条记录)竟然做了驱动表。...CONTENTS"[VARCHAR2,4000], "A"."N"[NUMBER,22], "B"."ID"[NUMBER,22],
"B"."