Zeta Components Manual :: Docs For Class ezcQuerySelectMssql
Database::ezcQuerySelectMssql
Class ezcQuerySelectMssql
SQL Server specific implementation of ezcQuery.
This class reimplements the LIMIT method in which the SQL Server differs from the standard implementation in ezcQuery.
Source for this file: /Database/src/sqlabstraction/implementations/query_select_mssql.php
ezcQuery | --ezcQuerySelect | --ezcQuerySelectMssql
Version: | //autogentag// |
Inherited Constants
From ezcQuerySelect: | |
---|---|
ezcQuerySelect::ASC
|
Sort the result ascending. |
ezcQuerySelect::DESC
|
Sort the result descending. |
Inherited Member Variables
From ezcQuerySelect | |
---|---|
protected |
ezcQuerySelect::$fromString
|
protected |
ezcQuerySelect::$groupString
|
protected |
ezcQuerySelect::$havingString
|
protected |
ezcQuerySelect::$lastInvokedMethod
|
protected |
ezcQuerySelect::$limitString
|
protected |
ezcQuerySelect::$orderString
|
protected |
ezcQuerySelect::$selectString
|
protected |
ezcQuerySelect::$whereString
|
From ezcQuery | |
protected |
ezcQuery::$db
|
public |
ezcQuery::$expr
|
Method Summary
public string |
getQuery(
)
Transforms the query from the parent to provide LIMIT functionality. |
public void |
limit(
$limit
, [ $offset
= 0] )
Returns SQL that limits the result set. |
public ezcQuery |
orderBy(
$column
, [ $type
= self::ASC] )
Saves the ordered columns in an internal array so we can invert that order if we need to in the limit() workaround |
public void |
reset(
)
Resets the query object for reuse. |
Inherited Methods
From ezcQuerySelect | |
---|---|
public ezcQuerySelect |
ezcQuerySelect::__construct()
Constructs a new ezcQuery object. |
public string |
ezcQuerySelect::alias()
Returns SQL to create an alias |
protected ezcQuery |
ezcQuerySelect::doJoin()
Returns the SQL for a join or prepares $fromString for a join. |
public ezcQuery |
ezcQuerySelect::from()
Select which tables you want to select from. |
public static bool|string |
ezcQuerySelect::getDummyTableName()
Returns dummy table name. |
public string |
ezcQuerySelect::getQuery()
Returns the complete select query string. |
public ezcQuery |
ezcQuerySelect::groupBy()
Returns SQL that groups the result set by a given column. |
public ezcQuery |
ezcQuerySelect::having()
Returns SQL that set having by a given expression. |
public ezcQuery |
ezcQuerySelect::innerJoin()
Returns the SQL for an inner join or prepares $fromString for an inner join. |
public ezcQuery |
ezcQuerySelect::leftJoin()
Returns the SQL for a left join or prepares $fromString for a left join. |
public ezcQuerySelect |
ezcQuerySelect::limit()
Returns SQL that limits the result set. |
public ezcQuery |
ezcQuerySelect::orderBy()
Returns SQL that orders the result set by a given column. |
public void |
ezcQuerySelect::reset()
Resets the query object for reuse. |
public ezcQuery |
ezcQuerySelect::rightJoin()
Returns the SQL for a right join or prepares $fromString for a right join. |
public ezcQuery |
ezcQuerySelect::select()
Opens the query and selects which columns you want to return with the query. |
public ezcQuery |
ezcQuerySelect::selectDistinct()
Opens the query and uses a distinct select on the columns you want to return with the query. |
public ezcQuerySelect |
ezcQuerySelect::where()
Adds a where clause with logical expressions to the query. |
From ezcQuery | |
public ezcQuery |
ezcQuery::__construct()
Constructs a new ezcQuery that works on the database $db and with the aliases $aliases. |
public static array |
ezcQuery::arrayFlatten()
Returns all the elements in $array as one large single dimensional array. |
public string |
ezcQuery::bindParam()
Binds the parameter $param to the specified variable name $placeHolder.. |
public string |
ezcQuery::bindValue()
Binds the value $value to the specified variable name $placeHolder. |
public void |
ezcQuery::doBind()
Performs binding of variables bound with bindValue and bindParam on the statement $stmt. |
protected string |
ezcQuery::getIdentifier()
Returns the correct identifier for the alias $alias. |
protected array(string) |
ezcQuery::getIdentifiers()
Returns the correct identifiers for the aliases found in $aliases. |
public abstract string |
ezcQuery::getQuery()
Returns the query string for this query object. |
public bool |
ezcQuery::hasAliases()
Returns true if this object has aliases. |
public PDOStatement |
ezcQuery::prepare()
Returns a prepared statement from this query which can be used for execution. |
protected void |
ezcQuery::resetBinds()
Resets the bound values and parameters to empty. |
public void |
ezcQuery::setAliases()
Sets the aliases $aliases for this object. |
public ezcQuerySubSelect |
ezcQuery::subSelect()
Returns the ezcQuerySubSelect query object. |
public string |
ezcQuery::__toString()
Return SQL string for query. |
Methods
getQuery
Transforms the query from the parent to provide LIMIT functionality.
Note: doesn't work exactly like the MySQL equivalent; it will always return $limit rows even if $offset + $limit exceeds the total number of rows.
Exceptions:
Type | Description |
---|---|
ezcQueryInvalidException |
if offset is used and orderBy is not. |
Redefinition of:
Method | Description |
---|---|
ezcQuerySelect::getQuery() |
Returns the complete select query string. |
limit
Returns SQL that limits the result set.
$limit controls the maximum number of rows that will be returned. $offset controls which row that will be the first in the result set from the total amount of matching rows.
Parameters:
Name | Type | Description |
---|---|---|
$limit |
int | integer expression |
$offset |
int | integer expression |
Redefinition of:
Method | Description |
---|---|
ezcQuerySelect::limit() |
Returns SQL that limits the result set. |
orderBy
Saves the ordered columns in an internal array so we can invert that order if we need to in the limit() workaround
Parameters:
Name | Type | Description |
---|---|---|
$column |
string | a column name in the result set |
$type |
string | if the column should be sorted ascending or descending. you can specify this using ezcQuerySelect::ASC or ezcQuerySelect::DESC |
Redefinition of:
Method | Description |
---|---|
ezcQuerySelect::orderBy() |
Returns SQL that orders the result set by a given column. |
reset
Resets the query object for reuse.
Redefinition of:
Method | Description |
---|---|
ezcQuerySelect::reset() |
Resets the query object for reuse. |