You have attempted to use the ALTER TABLE command where the result would render an existing index or filter expression invalid, even if it not explicitly modified by the ALTER TABLE command.
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| Visual FoxPro 9.0 |
| The table changes cannot be performed as the index or filter expression for index name would be invalid (Error 1531) |
You have attempted to use the ALTER TABLE command where the result would render an existing index or filter expression invalid, even if it not explicitly modified by the ALTER TABLE command.
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Web development