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WebSep 26, 2024 · The return value of the Oracle SUBSTR function is always the same data type as the one provided for string. So, if STRING is a VARCHAR2, the function returns VARCHAR2. Examples of the SUBSTR Function. Here are some examples of the Oracle SUBSTR function. I find that examples are the best way for me to learn about code, … Web2 days ago · Somewhere these translations must be defined. If no extensions have been added, and no functions have these names, then it's possible that the source from which the PostgreSQL executables were created was modified to perform these translations. COALESCE is the standard SQL equivalent to Oracle's NVL (Oracle supports both). check student loans balance
9.4. String Functions and Operators - PostgreSQL Documentation
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