使用哪些函数可以执行显式数据类型转换？（）
A: ROUN
B: TRUN
C: ADD_MONTHS
D: LENGT
E: SUBST
F: LPA
G: TRIM
H: TO_CHA
I: TO_DAT
J: TO_NUMBER
K: NV
L: NVL2、NULLIF
A: ROUN
B: TRUN
C: ADD_MONTHS
D: LENGT
E: SUBST
F: LPA
G: TRIM
H: TO_CHA
I: TO_DAT
J: TO_NUMBER
K: NV
L: NVL2、NULLIF
C
举一反三
- 常见的转换函数是？（） A: nvl B: nvl2 C: nullif D: coalesce
- 使用下列哪个不能将Null值转换为实际值（）。 A: NVL B: NVL2 C: NULLIF D: To_number
- 已知一棵二叉树的前序序列为：A，B，D，G，J，E，H，C，F，I，K，L；中序序列为：D，J，G，B，E，H，A，C，K，I，L，F。该二叉树的后序序列为（）。 A: J，H，F，B，G，D，K，L，I，F，C，A B: J，G，E，B，K，L，D，H，I，F，C，A C: J，G，D，H，E，B，K，L，I，F，C，A D: J，G，D，H，E，B，K，L，I，F，A，C
- applying to work in a restaurant A: a B: b C: c D: d E: e F: f G: g H: h I: i J: j K: k L: l
- Excessive sugar intake worldwide has everything to do with the great number of noninfectious disease-related deaths a year. A: A B: B C: C D: D E: E F: F G: G H: H I: I J: J K: K L: L M: M
内容
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