/**
* Returns the SQL for a select statement
*
* @param SQLStatement $select
*
* @return string
*/
public function select(SQLStatement $select)
{
$limit = $select->getLimit();
if ($limit <= 0) {
return parent::select($select);
}
$order = trim($this->handleOrderings($select->getOrder()));
if (empty($order)) {
$order = 'ORDER BY (SELECT 0)';
}
$sql = $select->getDistinct() ? 'SELECT DISTINCT ' : 'SELECT ';
$sql .= $this->handleColumns($select->getColumns());
$sql .= ', ROW_NUMBER() OVER (' . $order . ') AS opis_rownum';
$sql .= ' FROM ';
$sql .= $this->handleTables($select->getTables());
$sql .= $this->handleJoins($select->getJoins());
$sql .= $this->handleWheres($select->getWheres());
$sql .= $this->handleGroupings($select->getGroupBy());
$sql .= $this->handleHavings($select->getHaving());
$offset = $select->getOffset();
if ($offset < 0) {
$offset = 0;
}
$limit += $offset;
$offset++;
return 'SELECT * FROM (' . $sql . ') AS m1 WHERE opis_rownum BETWEEN ' . $offset . ' AND ' . $limit;
}
/**
* @param string|Closure $column
* @param Closure $value
* @param string $separator
*
* @return $this
*/
protected function addCondition($column, Closure $value = null, $separator) : self
{
if ($column instanceof Closure) {
$this->sql->addHavingGroupCondition($column, $separator);
} else {
$value($this->expression->init($column, $separator));
}
return $this;
}
/**
* Add a column
*
* @param string|Closure $name Column's name
* @param string $alias (optional) Alias
*
* @return $this
*/
public function column($name, string $alias = null) : self
{
if ($name instanceof Closure) {
$expression = $this->expression();
$name($expression);
$name = $expression;
}
$this->sql->addColumn($name, $alias);
return $this;
}
/**
* @param SQLStatement $update
*
* @return string
*/
public function update(SQLStatement $update) : string
{
$joins = $this->handleJoins($update->getJoins());
$tables = $update->getTables();
if ($joins !== '') {
$joins = ' FROM ' . $this->handleTables($tables) . ' ' . $joins;
$tables = array_values($tables);
}
$sql = 'UPDATE ';
$sql .= $this->handleTables($tables);
$sql .= $this->handleSetColumns($update->getColumns());
$sql .= $joins;
$sql .= $this->handleWheres($update->getWheres());
return $sql;
}
/**
* Compiles a SELECT query.
*
* @param SQLStatement $select
*
* @return string
*/
public function select(SQLStatement $select) : string
{
$limit = $select->getLimit();
if ($limit <= 0) {
return parent::select($select);
}
$sql = $select->getDistinct() ? 'SELECT DISTINCT ' : 'SELECT ';
$sql .= $this->handleColumns($select->getColumns());
$sql .= ' FROM ';
$sql .= $this->handleTables($select->getTables());
$sql .= $this->handleJoins($select->getJoins());
$sql .= $this->handleWheres($select->getWheres());
$sql .= $this->handleGroupings($select->getGroupBy());
$sql .= $this->handleOrderings($select->getOrder());
$sql .= $this->handleHavings($select->getHaving());
$offset = $select->getOffset();
if ($offset < 0) {
return 'SELECT * FROM (' . $sql . ') M1 WHERE ROWNUM <= ' . $limit;
}
$limit += $offset;
$offset++;
return 'SELECT * FROM (SELECT M1.*, ROWNUM AS OPIS_ROWNUM FROM (' . $sql . ') M1 WHERE ROWNUM <= ' . $limit . ') WHERE OPIS_ROWNUM >= ' . $offset;
}
/**
* Returns the SQL for a delete statement
*
* @param SQLStatement $delete
* @return string
*/
public function delete(SQLStatement $delete) : string
{
$sql = 'DELETE ' . $this->handleTables($delete->getTables());
$sql .= $sql === 'DELETE ' ? 'FROM ' : ' FROM ';
$sql .= $this->handleTables($delete->getFrom());
$sql .= $this->handleJoins($delete->getJoins());
$sql .= $this->handleWheres($delete->getWheres());
return $sql;
}
/**
* @param bool $not
*
* @return WhereStatement
*/
protected function addNullCondition(bool $not) : WhereStatement
{
$this->sql->addWhereNullCondition($this->column, $this->separator, $not);
return $this->statement;
}
/**
* @param string|float|int $value1
* @param string|float|int $value2
*/
public function notBetween($value1, $value2)
{
$this->sql->addHavingBetweenCondition($this->aggregate, $value1, $value2, $this->separator, true);
}
/**
* Compiles a SELECT query.
*
* @access public
* @param SQLStatement $select
* @return array
*/
public function select(SQLStatement $select)
{
$sql = $select->getDistinct() ? 'SELECT DISTINCT ' : 'SELECT ';
$sql .= $this->handleColumns($select->getColumns());
$sql .= $this->handleInto($select->getIntoTable(), $select->getIntoDatabase());
$sql .= ' FROM ';
$sql .= $this->handleTables($select->getTables());
$sql .= $this->handleJoins($select->getJoins());
$sql .= $this->handleWheres($select->getWheres());
$sql .= $this->handleGroupings($select->getGroupBy());
$sql .= $this->handleOrderings($select->getOrder());
$sql .= $this->handleHavings($select->getHaving());
$sql .= $this->handleOffset($select->getOffset(), $select->getLimit());
$sql .= $this->handleLimit($select->getLimit(), $select->getOffset());
return $sql;
}
/**
* @param string $table
*/
public function into(string $table)
{
$this->sql->addTables([$table]);
}
/**
* @param Closure $select
* @param string $separator
* @param bool $not
* @return WhereStatement
*/
protected function addWhereExistCondition(Closure $select, string $separator = 'AND', bool $not = false) : self
{
$this->sql->addWhereExistsCondition($select, $separator, $not);
return $this;
}
