Update CQL to SQL translation details in documentation #2350
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Clarified CQL behavior regarding != operator and its translation in SQL databases. Updated note on database-specific behavior for portable functions.
Added section on data loading order and handling large datasets.
renejeglinsky
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Jan 29, 2026
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| ## Data Loading Order | ||
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| CAP loads CSV files in **alphabetical order by filename**. When tables have foreign key relationships, ensure parent tables load before child tables to avoid constraint violations. | ||
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| **Example:** | ||
| ``` | ||
| db/data/ | ||
| ├── sap.capire.bookshop-Authors.csv # Loads first (parent) | ||
| └── sap.capire.bookshop-Books.csv # Loads second (references Authors) | ||
| ``` | ||
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| The filename prefix ensures correct order: `Authors` loads before `Books` alphabetically. If you encounter foreign key violations, verify your file naming follows dependency order. | ||
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| > [!tip] Large Datasets | ||
| > For datasets with thousands of rows, consider using database-specific bulk loading tools instead of CSV files. The CSV mechanism loads all data in a single transaction, which can cause memory issues and long startup times. |
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Another proposal by AI. I don't think that this is true, but how is the actual behavior?
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@danjoa Some edits by AI that I wanted to get a review on.
Clarified CQL behavior regarding != operator and its translation in SQL databases. Updated note on database-specific behavior for portable functions.