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SUBSTRING in Oracle - Examples & AI Generator
SUBSTRING in Oracle - Examples & AI Generator
The SUBSTRING function in Oracle is a powerful way to extract parts of a string, but the exact syntax often trips up even seasoned SQL developers. Oracle uses SUBSTR
(not SUBSTRING) and its parameter order and indexing differ from other databases. Rather than memorizing Oracle-specific rules, AI2sql lets you generate correct SUBSTRING queries in 10 seconds—no coding required. Whether you work in data analysis or migrate between databases, AI2sql solves the syntax puzzle instantly, letting you focus on results.
SUBSTRING Syntax in Oracle
Oracle SUBSTRING (SUBSTR) Function
Unlike SQL Server or MySQL, Oracle uses SUBSTR
:
string: The input text or column name.
start_position: Where to begin extracting (1-based index).
length (optional): How many characters to return.
Note: Omitting length
returns the substring to the end of the string.
SUBSTRING Examples You Can Generate Instantly
Example 1 — Extract first 3 letters of customer name:
Example 2 — Get area code from phone numbers in orders:
Example 3 — Last 4 digits of product codes:
Copy, edit, or use these SUBSTRING Oracle examples as-is, or:
Generate SUBSTRING queries in 10 seconds with AI2sql
Why Use AI2sql Instead of Manual SUBSTRING Coding
Never memorize Oracle SUBSTR syntax again—focus on logic, not rules
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Adapt code for 10+ SQL dialects in a click
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Save hours and avoid subtle off-by-one errors. Try our AI2sql Generator or Learn SUBSTRING in more detail.
FAQ: SUBSTRING in Oracle
Q: Is SUBSTRING the same as SUBSTR in Oracle?
A: Yes, Oracle uses the function name SUBSTR instead of SUBSTRING, with similar functionality.Q: What is the starting index for SUBSTR in Oracle?
A: Oracle uses 1-based indexing (the first character is at position 1).Q: Can I use negative numbers in SUBSTR?
A: Yes. A negativestart_position
counts from the end of the string.
Ready to skip the syntax headaches? Generate Your First Query Now with AI2sql and experience instant, error-free results.
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