Features
SQL BETWEEN selects values within an inclusive range. Write BETWEEN lower_bound AND upper_bound in a WHERE clause to filter rows whose column values fall between the two limits, including the limits themselves. Works with numbers, dates, and text when collation is ordered. Use with NOT to exclude a range.
SQL BETWEEN filters rows whose column values fall inside an inclusive range. Syntax: WHERE column BETWEEN lower AND upper. Works on numbers, dates, and ordered text.
SQL BETWEEN selects rows where a columnbetween two boundary values, inclusive. The operator simplifies range checks that would otherwise need multiple 3C= and 3E= comparisons.
Write BETWEEN in a WHERE clause: WHERE column BETWEEN lower_bound AND upper_bound. Place the lower value first, the upper second. Both bounds may be literals, expressions, or parameters.
BETWEEN is inclusive. Rows matching either boundary value are returned. Use greater-than or less-than operators if you need exclusive ranges.
BETWEEN works with numeric, date, time, and text data types that have an ordering. For text, database collation determines the sort order.
NOT BETWEEN excludes rows that fall inside a range. Combine with other predicates to keep queries clear: WHERE sale_date NOT BETWEEN '2023-01-01' AND '2023-01-31'.
Yes. You can use expressions: WHERE price BETWEEN discount_price() AND full_price * 1.1. The database evaluates each expression once per row during filtering.
SQL keywords are case-insensitive, so BETWEEN, between, and Between behave identically. Column and alias case sensitivity depends on the database.
BETWEEN is syntactic sugar for column 3E= lower AND column 3C= upper. Databases convert it internally, so performance is the same, but BETWEEN improves readability.
Common uses include date filtering for reports, price ranges in e-commerce, age bands in demographics, and text ranges for alphabetical pagination.
Yes. If the column is indexed, BETWEEN predicates can use range scans. Ensure the index covers the column to avoid full table scans.
Use parentheses for clarity: WHERE order_date BETWEEN '2023-01-01' AND '2023-03-31' OR amount BETWEEN 100 AND 200. Parentheses prevent logical errors.
BETWEEN returns UNKNOWN when the column value is NULL, so the row is excluded unless you explicitly add OR column IS NULL.
Yes. Example: WHERE salary BETWEEN (SELECT MIN(salary) FROM staff) AND (SELECT MAX(salary) FROM staff). Ensure subqueries return single values.
Use two bind parameters for the lower and upper bounds. Example in Python: cursor.execute("SELECT * FROM sales WHERE total BETWEEN %s AND %s", (min_total, max_total)).
Always order bounds correctly, use indexes, avoid string dates, and document inclusive behavior. Use explicit casts if comparing mixed types.
Run small sample queries first: SELECT COUNT(*) FROM orders WHERE order_date BETWEEN '2023-01-01' AND '2023-12-31'. Check counts against expectations before pushing to production.
Review database docs, practice in Galaxy27s free SQL editor, and experiment with the AI copilot to generate and explain BETWEEN queries.
BETWEEN offers concise, inclusive range filtering for numbers, dates, and ordered text. Use NOT BETWEEN to exclude ranges, remember NULLs are skipped, and leverage indexes for speed.
Yes. Ensure both bounds share the same time zone for consistent results, or cast them to a common zone.
Use expressions: WHERE order_date BETWEEN CURRENT_DATE - INTERVAL '7 days' AND CURRENT_DATE. Most databases accept interval arithmetic.
Yes. Example: WHERE last_name BETWEEN 'A' AND 'M' returns names starting with A through M, depending on collation.
No. Databases convert BETWEEN to >= AND <= internally, so execution plans are identical. The benefit is readability.
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