/**
* Gets the alter table column SQL queries.
* @param \UniversalDb\Common\Schema\Diff\ColumnDiff $columnDiff The column diff.
* @param string $table The table name.
* @return array The alter table column SQL queries.
*/
public function getAlterColumnSQLQueries(ColumnDiff $columnDiff, $table) : array
{
return [$this->getAlterTableSQLQuery($table, 'CHANGE COLUMN', $columnDiff->getOldAsset()->getName() . ' ' . $this->getColumnSQLDeclaration($columnDiff->getNewAsset()))];
}
/**
* Gets the alter table column SQL queries.
* @param \UniversalDb\Common\Schema\Diff\ColumnDiff $columnDiff The column diff.
* @param string $table The table name.
* @return array The alter table column SQL queries.
*/
public function getAlterColumnSQLQueries(ColumnDiff $columnDiff, $table) : array
{
$queries = [];
if ($columnDiff->getOldAsset()->getName() !== $columnDiff->getNewAsset()->getName()) {
$queries[] = $this->getAlterTableSQLQuery($table, 'RENAME COLUMN', $columnDiff->getOldAsset()->getName() . ' TO ' . $columnDiff->getNewAsset()->getName());
}
$alterColumnSQLQuerySnippet = $this->getAlterTableSQLQuery($table, 'ALTER COLUMN', $columnDiff->getNewAsset()->getName());
if (in_array('type', $columnDiff->getDifferences()) || in_array('length', $columnDiff->getDifferences()) || in_array('precision', $columnDiff->getDifferences()) || in_array('scale', $columnDiff->getDifferences())) {
$typeDeclaration = $columnDiff->getNewAsset()->getType()->getSQLDeclaration($this, $columnDiff->getNewAsset()->toArray());
$queries[] = $alterColumnSQLQuerySnippet . ' TYPE ' . $typeDeclaration;
}
if (in_array('not_null', $columnDiff->getDifferences())) {
if ($columnDiff->getNewAsset()->isNotNull()) {
$notNullDeclaration = ' SET NOT NULL';
} else {
$notNullDeclaration = ' DROP NOT NULL';
}
$queries[] = $alterColumnSQLQuerySnippet . $notNullDeclaration;
}
if (in_array('default', $columnDiff->getDifferences())) {
if ($columnDiff->getNewAsset()->getDefault() !== null) {
$defaultDeclaration = ' SET DEFAULT ' . $this->quote($columnDiff->getNewAsset()->getDefault());
} else {
$defaultDeclaration = ' DROP DEFAULT';
}
$queries[] = $alterColumnSQLQuerySnippet . $defaultDeclaration;
}
if (in_array('comment', $columnDiff->getDifferences()) || in_array('type', $columnDiff->getDifferences()) && $this->hasCustomType($columnDiff->getNewAsset()->getType()->getName())) {
$queries[] = $this->getCreateColumnCommentSQLQuery($columnDiff->getNewAsset(), $table);
}
return $queries;
}