PLS-00618: type mismatch found at 'string' between operands in a NULLIF expression

PLS-00618: type mismatch found at 'string' between operands in a NULLIF expression
Cause: In a NULLIF expression, the two operands do not match in datatype, and it is unclear which implicit conversion is required to correct the mismatch.
Action: Change the operands so that their datatypes match. Consider using datatype conversion functions in the operands.

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小智 2018-08-30 19:02

PLS-00618：在NULLIF表达式的操作数之间的' string '处找到类型不匹配,
.原因：在NULLIF表达式中，两个操作数在数据类型中不匹配，并且不清楚需要哪个隐式转换来纠正不匹配。,
.操作：更改操作数，使其数据类型匹配。考虑在操作数中使用数据类型转换函数。,
.

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PLS-00618: type mismatch found at 'string' between operands in a NULLIF expression

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