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<div class="kicker">CSV import/export • Encoding • Data types</div>
<h1 id="title" class="title">Import and Export CSV in DB Browser (SQLCipher)</h1>
<p class="lead">Import CSV into an encrypted database or export tables and query results to CSV with predictable encoding and delimiters. This guide covers common pitfalls, data type mapping and large file strategies on Windows.</p>
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<strong>Quick tips</strong>
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<li>Use UTF‑8 encoding unless legacy systems require otherwise.</li>
<li>Keep headers consistent; verify column order and names.</li>
<li>Decide on delimiters and quoting; default to comma + quotes.</li>
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<h2 style="margin:0 0 6px 0">Import CSV into an encrypted database</h2>
<ol class="list" style="list-style:decimal">
<li>Open your encrypted database (<a href="/open-encrypted-db.html">how to open</a>) and choose <em>Import → Table from CSV</em>.</li>
<li>Pick the CSV file and set <strong>delimiter</strong> (comma, semicolon, tab), <strong>quote</strong> and <strong>encoding</strong> (UTF‑8 recommended).</li>
<li>Review detected headers and <strong>map columns</strong> to target names and <strong>types</strong> (INTEGER, REAL, TEXT, BLOB). Add constraints if needed.</li>
<li>Run the import and verify row counts. Spot‑check a few records and special characters.</li>
</ol>
<div class="tip">Large files? Split into chunks, or import into a staging table and then transform with SQL for better control.</div>
<p class="muted">Trouble importing? See <a href="/troubleshooting.html">Troubleshooting</a> for encoding and delimiter issues.</p>
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<h2 style="margin:0 0 6px 0">Export a table or query to CSV</h2>
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<li>Select the table you want to export, or run a SELECT query to produce the desired result set.</li>
<li>Choose <em>Export → Table (or Query) to CSV</em>, set delimiter and quoting, and pick <strong>UTF‑8</strong> unless a consumer requires another encoding.</li>
<li>Save the file and validate it in a text editor (headers, separators, sample rows).</li>
</ol>
<div class="tip">Dates and times: prefer ISO‑8601 (YYYY‑MM‑DD, HH:MM:SS) for predictable parsing in other tools.</div>
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<h2 style="margin:0 0 6px 0">Data types, NULLs and cleaning</h2>
<ul class="list">
<li><strong>Types</strong>: SQLite is flexible; choose practical affinities. Validate numeric and date fields after import.</li>
<li><strong>NULLs</strong>: Decide how to represent empty values (empty string vs literal NULL) and configure the importer accordingly.</li>
<li><strong>Whitespace</strong>: Trim fields if the source adds trailing spaces; standardize line endings (Windows CRLF).</li>
</ul>
<p class="muted">Need structured examples? See <a href="/cli-commands.html">Useful SQL/PRAGMA commands</a> for post‑import checks.</p>
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<h2 style="margin:0 0 6px 0">Performance and large files</h2>
<ul class="list">
<li>Import in batches; wrap large operations in transactions where possible.</li>
<li>Consider temporary indexes for faster dedup/joins, then drop them.</li>
<li>Disable non‑critical triggers during bulk load, re‑enable afterwards.</li>
</ul>
<p class="muted">More guidance: <a href="/performance-tips.html">Performance tips</a>.</p>
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<h2 style="margin:0 0 6px 0">Next steps</h2>
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<li><a href="/open-encrypted-db.html">Open an encrypted database</a></li>
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