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<?php |
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namespace Lagdo\DbAdmin\Db\Facades\Traits; |
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use Lagdo\DbAdmin\Driver\Db\StatementInterface; |
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use Lagdo\DbAdmin\Driver\Entity\TableFieldEntity; |
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use function count; |
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use function strlen; |
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use function preg_match; |
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use function str_replace; |
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use function implode; |
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use function is_numeric; |
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use function array_map; |
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trait TableDataDumpTrait |
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{ |
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/** |
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* The queries generated by the dump |
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* |
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* @var array |
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*/ |
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private $queries = []; |
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/** |
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* The dump options |
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* |
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* @var array |
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*/ |
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private $options; |
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// Temp vars for data dumps |
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private $insert = ''; |
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private $buffer = ''; |
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private $suffix = ''; |
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/** |
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* Print CSV row |
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* |
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* @param array $row |
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* |
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* @return void |
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*/ |
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private function dumpCsv(array $row) |
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{ |
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// From functions.inc.php |
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foreach ($row as $key => $val) { |
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if (preg_match('~["\n,;\t]|^0|\.\d*0$~', $val) || $val === '') { |
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$row[$key] = '"' . str_replace('"', '""', $val) . '"'; |
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} |
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} |
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$separator = $this->options['format'] === 'csv' ? ',' : |
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($this->options['format'] === 'tsv' ? "\t" : ';'); |
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$this->queries[] = implode($separator, $row); |
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} |
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/** |
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* Convert a value to string |
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* |
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* @param mixed $value |
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* @param TableFieldEntity $field |
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* |
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* @return string |
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*/ |
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private function convertToString($value, TableFieldEntity $field): string |
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{ |
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// From functions.inc.php |
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if ($value === null) { |
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return 'NULL'; |
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} |
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if (!preg_match($this->driver->numberRegex(), $field->type) || |
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preg_match('~\[~', $field->fullType) && is_numeric($value)) { |
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$value = $this->driver->quote(($value === false ? 0 : $value)); |
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} |
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return $this->driver->unconvertField($field, $value); |
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} |
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/** |
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* @param array $row |
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* @param StatementInterface $statement |
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* |
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* @return array |
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*/ |
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private function getDataRowKeys(array $row, StatementInterface $statement): array |
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{ |
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$values = []; |
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$keys = []; |
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// For is preferred to foreach because the values are not used. |
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// foreach ($row as $val) { |
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// } |
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$rowCount = count($row); |
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for ($i = 0; $i < $rowCount; $i++) { |
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$field = $statement->fetchField(); |
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$keys[] = $field->name(); |
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$key = $this->driver->escapeId($field->name()); |
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$values[] = "$key = VALUES($key)"; |
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} |
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$this->suffix = ";\n"; |
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if ($this->options['data_style'] === 'INSERT+UPDATE') { |
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$this->suffix = "\nON DUPLICATE KEY UPDATE " . implode(', ', $values) . ";\n"; |
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} |
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return $keys; |
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} |
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/** |
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* @param array $row |
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* |
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* @return void |
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*/ |
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private function saveRowInBuffer(array $row) |
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{ |
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$max_packet = ($this->driver->jush() === 'sqlite' ? 0 : 1048576); // default, minimum is 1024 |
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$s = ($max_packet ? "\n" : ' ') . '(' . implode(",\t", $row) . ')'; |
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if (!$this->buffer) { |
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$this->buffer = $this->insert . $s; |
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return; |
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} |
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if (strlen($this->buffer) + 4 + strlen($s) + strlen($this->suffix) < $max_packet) { // 4 - length specification |
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$this->buffer .= ",$s"; |
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return; |
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} |
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$this->queries[] = $this->buffer . $this->suffix; |
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$this->buffer = $this->insert . $s; |
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} |
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/** |
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* @param string $table |
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* @param array $fields |
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* @param array $row |
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* @param array $keys |
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* |
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* @return void |
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*/ |
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private function dumpRow(string $table, array $fields, array $row, array $keys) |
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{ |
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if ($this->options['format'] !== 'sql') { |
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if ($this->options['data_style'] === 'table') { |
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$this->dumpCsv($keys); |
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$this->options['data_style'] = 'INSERT'; |
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} |
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$this->dumpCsv($row); |
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return; |
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} |
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if (!$this->insert) { |
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$this->insert = 'INSERT INTO ' . $this->driver->escapeTableName($table) . ' (' . |
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implode(', ', array_map(function ($key) { |
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return $this->driver->escapeId($key); |
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}, $keys)) . ') VALUES'; |
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} |
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foreach ($row as $key => $val) { |
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$field = $fields[$key]; |
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$row[$key] = $this->convertToString($val, $field); |
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} |
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$this->saveRowInBuffer($row); |
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} |
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/** |
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* @param string $table |
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* |
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* @return void |
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*/ |
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private function dumpTruncateQuery(string $table) |
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{ |
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if ($this->options['format'] === 'sql' && |
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$this->options['data_style'] === 'TRUNCATE+INSERT') { |
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$this->queries[] = $this->driver->getTruncateTableQuery($table) . ";\n"; |
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} |
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} |
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/** |
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* @param string $table |
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* @param StatementInterface $statement |
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* |
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* @return void |
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*/ |
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private function dumpRows(string $table, StatementInterface $statement) |
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{ |
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$fields = $this->options['format'] !== 'sql' ? [] : $this->driver->fields($table); |
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$keys = []; |
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$fetch_function = ($table !== '' ? 'fetchAssoc' : 'fetchRow'); |
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while ($row = $statement->$fetch_function()) { |
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if (empty($keys)) { |
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$keys = $this->getDataRowKeys($row, $statement); |
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} |
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$this->dumpRow($table, $fields, $row, $keys); |
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} |
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} |
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/** Export table data |
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* |
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* @param string $table |
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* |
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* @return void |
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*/ |
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private function dumpTableData(string $table) |
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{ |
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if (!$this->options['data_style']) { |
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return; |
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} |
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$fields = $this->driver->fields($table); |
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$query = 'SELECT *' . $this->driver->convertFields($fields, $fields) . ' FROM ' . $this->driver->escapeTableName($table); |
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$statement = $this->driver->query($query); // 1 - MYSQLI_USE_RESULT //! enum and set as numbers |
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if (!$statement) { |
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if ($this->options['format'] === 'sql') { |
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$this->queries[] = '-- ' . str_replace("\n", ' ', $this->driver->error()) . "\n"; |
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} |
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return; |
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} |
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$this->insert = ''; |
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$this->buffer = ''; |
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$this->suffix = ''; |
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$this->dumpTruncateQuery($table); |
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$this->dumpRows($table, $statement); |
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if (!empty($this->buffer)) { |
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$this->queries[] = $this->buffer . $this->suffix; |
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} |
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} |
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} |
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lagdo /
jaxon-dbadmin
