Fix bug #78192 PDO SQLite reset columns on schema changed #4313
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…has changed Reset stmt->columns when column count changed on new execution of prepared statement
cmb69
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Jun 28, 2019
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Thanks for the PR!
Note: If a column name change, but without count change, the columns descriptions is not reloaded.
I think we should adress this as well (as of SQLite 3.25.0 RENAME COLUMN is supported), but this may affect ext/sqlite3, too, and since there appears to occur no segfault (only out-dated column names), this PR is good to be merged.
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Applied as 05c00a8. Also filed https://bugs.php.net/78227 regarding |
php-pulls
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Dec 8, 2020
This has been fixed for PDO SQlite by GH-4313, however the same issue also applied to PDO MySQL. Move the column count setting function into the main PDO layer (and export it) and then use it in both PDO SQLite and PDO MySQL.
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Reset stmt->columns when column count changed on new execution of prepared statement.
Since PHP 7.2, sqlite3_prepare_v2 is used, which recompile statement on schema changed (and not raise schema changed exception). This behavior will change the result set columns, which can cause a segmentation fault when column count changed.
This fix will reset the loaded columns when the count changed to ensure that there were reloaded.
New columns are now returned on fetch.
Note: If a column name change, but without count change, the columns descriptions is not reloaded.