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17 lines
745 B
HTML
17 lines
745 B
HTML
<header>Add or Rename Column</header>
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This page adds or renames a column without rebuilding the table.
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<p>An added column has a name, type and optional default. Existing rows
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receive the default, so a column that does not allow NULL must have one.
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SQLite does not allow an added column to be a primary key, to be unique, or
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to default to the current time or date. Rebuild the table with SQL to make
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those changes.</p>
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<p>Renaming changes only the name. SQLite also updates dependent indexes,
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triggers and views. It rejects the rename if the updated schema would be
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ambiguous or invalid.</p>
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<p>Changing a column's type, NULL rule, default or key requires rebuilding
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the table. Use <b>Execute SQL</b> if your module permissions allow it.</p>
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