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Stop Overlapping Ranges in a Table

Range-based definition of values is a common business scenario, as in the case of mortgage pre-payment penalty charges depending on "pre-payment amount" slabs, or incentives for a dealer depending on "business generated" slabs. A necessary validation is such cases is that the slabs should have no overlaps: each discrete value should match no more than […]

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Auto-Increment Columns: FAQ

What is an auto-increment column? A table column of which the value increments automatically each time a row is inserted into the table. What is the use of auto-increment columns? This column usually serves as the primary key or unique identifier for each row of the table. Since the value automatically increments with each insert, […]

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