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transform: coerce empty strings to NULL when converting TEXT columns to numeric types - #805
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simonw merged 3 commits intoAug 13, 2026
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…to numeric types When a TEXT column is transformed to INTEGER, FLOAT, or REAL and a row contains an empty string, the empty string is now converted to NULL during the INSERT...SELECT copy, matching the expected behavior described in simonw#488. Fixes simonw#488
This was referenced Aug 13, 2026
…tring-to-null # Conflicts: # tests/test_transform.py
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When
.transform()copies data from a TEXT column into a newly-typed INTEGER, FLOAT, or REAL column, empty string values ("") are now converted toNULLviaNULLIF(col, '')in theINSERT … SELECTstatement, instead of being stored as empty strings in the numeric column. Non-empty strings that represent valid numbers continue to be coerced by SQLite as before, andNULLvalues are preserved unchanged. Fixes:sqlite-utils transformshould set empty strings to null when converting text columns to integer/float #488Generated by Claude Code
📚 Documentation preview 📚: https://sqlite-utils--805.org.readthedocs.build/en/805/