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Error Handling in T-SQL - TRY...CATCH, THROW, RAISEERROR

SQLeasy0.4 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Kaseya
Key Concepts Tested
sql
Expert AnswerPremium
83 wordsInterview-ready
**Architectural Logic**: Error handling affects debuggability and caller experience. **TRY-CATCH**: Captures errors in block; enables cleanup or logging. **THROW** (SQL 2012+): Raises error; preserves call stack; use in CATCH to rethrow. **RAISERROR**: Legacy; custom messages; doesn't preserve stack. **Example**: `BEGIN TRY; INSERT ...; END TRY BEGIN CATCH; THROW; END CATCH`. **Why THROW**: Better diagnostics; RAISERROR is deprecated for new code....
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