Question: What can
I do to check the datatype of a input variable on a column
name. I want to read a varchar2 column and see if the
datatype of the column value is numeric, character, or hex.
How do I check the datatype of a value in SQL?
Answer: To check the value of a
datatype in a column, you can use regular expression syntax:
when regexp_like(col1, '^[^a-zA-Z]*$') then 'number'
regexp_like(col1, '^[^g-zG-Z]*$') then 'hex'
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