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How does the MAXERROR parameter affect data loading in Redshift?

SQLeasy0.3 min read

**MAXERROR**: COPY command parameter; max bad rows before abort. MAXERROR 0 (default) = fail on first error. MAXERROR 100 = load continues until 100 errors; then stops. **Failed rows**: Written to STL_LOAD_ERRORS or error table. **Use case**: Dirty source with known error rate;...

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Frequency
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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
Capco

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This easy-level SQL question appears frequently in data engineering interviews at companies like Capco. While less common, it tests deeper understanding that distinguishes strong candidates.

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Expert Answer
66 words

MAXERROR: COPY command parameter; max bad rows before abort. MAXERROR 0 (default) = fail on first error. MAXERROR 100 = load continues until 100 errors; then stops. Failed rows: Written to STL_LOAD_ERRORS or error table. Use case: Dirty source with known error rate; don't want one bad row to block load. Best practice: Set based on tolerance; always check error table; alert on high error count.

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