PL/SQL流程控制
1.条件判断方式一:
if ... then ... elsif ... then ... else ... end if;
方式二:
case ... when ... then ... end;
2.循环结构
方式一:
loop ... exit when ... end loop;
方式二:
while ... loop ... end loop;
方式三:
for i in ... loop ... end loop;
3.
goto、exit
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