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authorAndrey Andreev <narf@bofh.bg>2012-07-19 12:06:02 +0200
committerAndrey Andreev <narf@bofh.bg>2012-07-19 12:06:02 +0200
commitc9b924c1498847d8f324d81c8994fff0b95f26dc (patch)
treec78ca7d7ad67df0cf69414180e36a037c8c45970 /system/database/drivers
parent94611df88cf99ae530258a25e2051e901b9ffcc7 (diff)
Remove _limit()'s extra parameters and qb_limit, qb_offset unneeded typecasts + add _compile_group_by() method
Diffstat (limited to 'system/database/drivers')
-rw-r--r--system/database/drivers/ibase/ibase_driver.php15
-rw-r--r--system/database/drivers/mssql/mssql_driver.php20
-rw-r--r--system/database/drivers/oci8/oci8_driver.php10
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_4d_driver.php6
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php16
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php10
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_informix_driver.php6
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_oci_driver.php10
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php6
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php6
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php18
-rw-r--r--system/database/drivers/postgre/postgre_driver.php6
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_driver.php16
13 files changed, 58 insertions, 87 deletions
diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php
index 86c1fee6d..7b37b9999 100644
--- a/system/database/drivers/ibase/ibase_driver.php
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -285,7 +285,10 @@ class CI_DB_ibase_driver extends CI_DB {
*/
protected function _field_data($table)
{
- return $this->_limit('SELECT * FROM '.$this->protect_identifiers($table), 1, NULL);
+ $this->qb_limit = 1;
+ $sql = $this->_limit('SELECT * FROM '.$this->protect_identifiers($table));
+ $this->qb_limit = 0;
+ return $sql;
}
// --------------------------------------------------------------------
@@ -378,22 +381,20 @@ class CI_DB_ibase_driver extends CI_DB {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
// Limit clause depends on if Interbase or Firebird
if (stripos($this->version(), 'firebird') !== FALSE)
{
- $select = 'FIRST '. (int) $limit
- .($offset ? ' SKIP '. (int) $offset : '');
+ $select = 'FIRST '.$this->qb_limit
+ .($this->qb_offset ? ' SKIP '.$this->qb_offset : '');
}
else
{
$select = 'ROWS '
- .($offset ? (int) $offset.' TO '.($limit + $offset) : (int) $limit);
+ .($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
}
return preg_replace('`SELECT`i', 'SELECT '.$select, $sql);
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index 35cd85702..bfc82a6c2 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -429,7 +429,7 @@ class CI_DB_mssql_driver extends CI_DB {
{
if ($this->qb_limit)
{
- return 'WITH ci_delete AS (SELECT TOP '.(int) $this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+ return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
}
return parent::_delete($table);
@@ -443,25 +443,17 @@ class CI_DB_mssql_driver extends CI_DB {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- // As of SQL Server 2012 (11.0.*) OFFSET is supported
- if (version_compare($this->version(), '11', '>='))
- {
- return $sql.' OFFSET '.(int) $offset.' ROWS FETCH NEXT '.(int) $limit.' ROWS ONLY';
- }
-
- $limit = $offset + $limit;
+ $limit = $this->qb_offset + $this->qb_limit;
// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
// however an ORDER BY clause is required for it to work
- if (version_compare($this->version(), '9', '>=') && $offset && ! empty($this->qb_orderby))
+ if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
{
- $orderby = 'ORDER BY '.implode(', ', $this->qb_orderby);
+ $orderby = trim($this->_compile_order_by());
// We have to strip the ORDER BY clause
$sql = trim(substr($sql, 0, strrpos($sql, 'ORDER BY '.$orderby)));
@@ -469,7 +461,7 @@ class CI_DB_mssql_driver extends CI_DB {
return 'SELECT '.(count($this->qb_select) === 0 ? '*' : implode(', ', $this->qb_select))." FROM (\n"
.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.$orderby.') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
."\n) ".$this->escape_identifiers('CI_subquery')
- ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.((int) $offset + 1).' AND '.$limit;
+ ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
}
return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index a0f26c257..dcc46527c 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -617,7 +617,7 @@ class CI_DB_oci8_driver extends CI_DB {
{
if ($this->qb_limit)
{
- $this->where('rownum <= ', (int) $this->qb_limit, FALSE);
+ $this->where('rownum <= ',$this->qb_limit, FALSE);
$this->qb_limit = FALSE;
}
@@ -632,15 +632,13 @@ class CI_DB_oci8_driver extends CI_DB {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
$this->limit_used = TRUE;
- return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($offset + $limit + 1).')'
- .($offset ? ' WHERE rnum >= '.($offset + 1): '');
+ return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+ .($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): '');
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
index 014112401..0e6877c28 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_4d_driver.php
@@ -185,13 +185,11 @@ class CI_DB_pdo_4d_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- return $sql.' LIMIT '.$limit.($offset ? ' OFFSET '.$offset : '');
+ return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
}
}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
index 20d510ff6..ad699ce23 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
@@ -198,7 +198,7 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
{
if ($this->qb_limit)
{
- return 'WITH ci_delete AS (SELECT TOP '.(int) $this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+ return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
}
return parent::_delete($table);
@@ -212,19 +212,17 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- $limit = $offset + $limit;
+ $limit = $this->qb_offset + $this->qb_limit;
// As of SQL Server 2005 (9.0.*) ROW_NUMBER() is supported,
// however an ORDER BY clause is required for it to work
- if (version_compare($this->version(), '9', '>=') && $offset && ! empty($this->qb_orderby))
+ if (version_compare($this->version(), '9', '>=') && $this->qb_offset && ! empty($this->qb_orderby))
{
- $orderby = 'ORDER BY '.implode(', ', $this->qb_orderby);
+ $orderby = trim($this->_compile_order_by());
// We have to strip the ORDER BY clause
$sql = trim(substr($sql, 0, strrpos($sql, 'ORDER BY '.$orderby)));
@@ -232,7 +230,7 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
return 'SELECT '.(count($this->qb_select) === 0 ? '*' : implode(', ', $this->qb_select))." FROM (\n"
.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.$orderby.') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
."\n) ".$this->escape_identifiers('CI_subquery')
- ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.((int) $offset + 1).' AND '.$limit;
+ ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
}
return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
@@ -241,4 +239,4 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
}
/* End of file pdo_dblib_driver.php */
-/* Location: ./system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php */
+/* Location: ./system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php */ \ No newline at end of file
diff --git a/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
index ee21ed22f..5b36342d2 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_firebird_driver.php
@@ -211,22 +211,20 @@ class CI_DB_pdo_firebird_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
// Limit clause depends on if Interbase or Firebird
if (stripos($this->version(), 'firebird') !== FALSE)
{
- $select = 'FIRST '. (int) $limit
- .($offset > 0 ? ' SKIP '. (int) $offset : '');
+ $select = 'FIRST '.$this->qb_limit
+ .($this->qb_offset > 0 ? ' SKIP '.$this->qb_offset : '');
}
else
{
$select = 'ROWS '
- .($offset > 0 ? (int) $offset.' TO '.($limit + $offset) : (int) $limit);
+ .($this->qb_offset > 0 ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
}
return preg_replace('`SELECT`i', 'SELECT '.$select, $sql);
diff --git a/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
index a6869a7d2..82480498a 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_informix_driver.php
@@ -232,13 +232,11 @@ class CI_DB_pdo_informix_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- $select = 'SELECT '.($offset ? 'SKIP '.$offset : '').'FIRST '.$limit.' ';
+ $select = 'SELECT '.($this->qb_offset ? 'SKIP '.$this->qb_offset : '').'FIRST '.$this->qb_limit.' ';
return preg_replace('/^(SELECT\s)/i', $select, $sql, 1);
}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
index 494d82c3f..cfbb639a8 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
@@ -196,7 +196,7 @@ class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver {
{
if ($this->qb_limit)
{
- $this->where('rownum <= ', (int) $this->qb_limit, FALSE);
+ $this->where('rownum <= ',$this->qb_limit, FALSE);
$this->qb_limit = FALSE;
}
@@ -211,14 +211,12 @@ class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($offset + $limit + 1).')'
- .($offset ? ' WHERE rnum >= '.($offset + 1): '');
+ return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
+ .($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): '');
}
}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
index 722acad89..0c3467484 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
@@ -230,13 +230,11 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+ return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$this->qb_limit.' ', $sql);
}
}
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
index 510a2a38f..07cf8f56b 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
@@ -238,13 +238,11 @@ class CI_DB_pdo_pgsql_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- return $sql.' LIMIT '.$limit.($offset ? ' OFFSET '.$offset : '');
+ return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
index 39cb5f9ef..399d134af 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
@@ -227,7 +227,7 @@ class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
{
if ($this->qb_limit)
{
- return 'WITH ci_delete AS (SELECT TOP '.(int) $this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+ return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
}
return parent::_delete($table);
@@ -241,24 +241,22 @@ class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
// As of SQL Server 2012 (11.0.*) OFFSET is supported
if (version_compare($this->version(), '11', '>='))
{
- return $sql.' OFFSET '.(int) $offset.' ROWS FETCH NEXT '.(int) $limit.' ROWS ONLY';
+ return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
}
- $limit = $offset + $limit;
+ $limit = $this->qb_offset + $this->qb_limit;
// An ORDER BY clause is required for ROW_NUMBER() to work
- if ($offset && ! empty($this->qb_orderby))
+ if ($this->qb_offset && ! empty($this->qb_orderby))
{
- $orderby = 'ORDER BY '.implode(', ', $this->qb_orderby);
+ $orderby = trim($this->_compile_order_by());
// We have to strip the ORDER BY clause
$sql = trim(substr($sql, 0, strrpos($sql, 'ORDER BY '.$orderby)));
@@ -266,7 +264,7 @@ class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
return 'SELECT '.(count($this->qb_select) === 0 ? '*' : implode(', ', $this->qb_select))." FROM (\n"
.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.$orderby.') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
."\n) ".$this->escape_identifiers('CI_subquery')
- ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.((int) $offset + 1).' AND '.$limit;
+ ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
}
return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
@@ -275,4 +273,4 @@ class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
}
/* End of file pdo_sqlsrv_driver.php */
-/* Location: ./system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php */
+/* Location: ./system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php */ \ No newline at end of file
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 1c03f6831..ddcf3f7c3 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -549,13 +549,11 @@ class CI_DB_postgre_driver extends CI_DB {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
- return $sql.' LIMIT '.$limit.($offset ? ' OFFSET '.$offset : '');
+ return $sql.' LIMIT '.$this->qb_limit.($this->qb_offset ? ' OFFSET '.$this->qb_offset : '');
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
index 9ea6facb3..4eb12f910 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_driver.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -425,7 +425,7 @@ class CI_DB_sqlsrv_driver extends CI_DB {
{
if ($this->qb_limit)
{
- return 'WITH ci_delete AS (SELECT TOP '.(int) $this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
+ return 'WITH ci_delete AS (SELECT TOP '.$this->qb_limit.' * FROM '.$table.$this->_compile_wh('qb_where').') DELETE FROM ci_delete';
}
return parent::_delete($table);
@@ -439,24 +439,22 @@ class CI_DB_sqlsrv_driver extends CI_DB {
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param int the number of rows to limit the query to
- * @param int the offset value
* @return string
*/
- protected function _limit($sql, $limit, $offset)
+ protected function _limit($sql)
{
// As of SQL Server 2012 (11.0.*) OFFSET is supported
if (version_compare($this->version(), '11', '>='))
{
- return $sql.' OFFSET '.(int) $offset.' ROWS FETCH NEXT '.(int) $limit.' ROWS ONLY';
+ return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
}
- $limit = $offset + $limit;
+ $limit = $this->qb_offset + $this->qb_limit;
// An ORDER BY clause is required for ROW_NUMBER() to work
- if ($offset && ! empty($this->qb_orderby))
+ if ($this->qb_offset && ! empty($this->qb_orderby))
{
- $orderby = 'ORDER BY '.implode(', ', $this->qb_orderby);
+ $orderby = trim($this->_compile_order_by());
// We have to strip the ORDER BY clause
$sql = trim(substr($sql, 0, strrpos($sql, 'ORDER BY '.$orderby)));
@@ -464,7 +462,7 @@ class CI_DB_sqlsrv_driver extends CI_DB {
return 'SELECT '.(count($this->qb_select) === 0 ? '*' : implode(', ', $this->qb_select))." FROM (\n"
.preg_replace('/^(SELECT( DISTINCT)?)/i', '\\1 ROW_NUMBER() OVER('.$orderby.') AS '.$this->escape_identifiers('CI_rownum').', ', $sql)
."\n) ".$this->escape_identifiers('CI_subquery')
- ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.((int) $offset + 1).' AND '.$limit;
+ ."\nWHERE ".$this->escape_identifiers('CI_rownum').' BETWEEN '.($this->qb_offset + 1).' AND '.$limit;
}
return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);