The QSqlIndex class provides functions to manipulate and describe database indexes. More...
| Header: | #include <QSqlIndex> |
| CMake: | find_package(Qt6 REQUIRED COMPONENTS Sql)target_link_libraries(mytarget PRIVATE Qt6::Sql) |
| qmake: | QT += sql |
| Inherits: | QSqlRecord |
(since 6.8) cursorName : QString(since 6.8) name : QString| QSqlIndex(const QString &cursorname = QString(), const QString &name = QString()) | |
| QSqlIndex(const QSqlIndex &other) | |
(since 6.6) |
QSqlIndex(QSqlIndex &&other) |
| ~QSqlIndex() | |
| void | append(const QSqlField &field) |
| void | append(const QSqlField &field, bool desc) |
| QString | cursorName() const |
| bool | isDescending(int i) const |
| QString | name() const |
| void | setCursorName(const QString &cursorName) |
| void | setDescending(int i, bool desc) |
| void | setName(const QString &name) |
(since 6.6) QSqlIndex & |
operator=(QSqlIndex &&other) |
| QSqlIndex & | operator=(const QSqlIndex &other) |
An index refers to a single table or view in a database. Information about the fields that comprise the index can be used to generate SQL statements.
[since 6.8] cursorName : QStringThis property holds the name of the cursor which the index is associated with.
This property was introduced in Qt 6.8.
Access functions:
| QString | cursorName() const |
| void | setCursorName(const QString &cursorName) |
[since 6.8] name : QStringThis property holds the name of the index.
This property was introduced in Qt 6.8.
Access functions:
[explicit] QSqlIndex::QSqlIndex(const QString
&cursorname = QString(), const QString &name = QString())Constructs an empty index using the cursor name cursorname and index name name.
Constructs a copy of other.
[noexcept, since 6.6] QSqlIndex::QSqlIndex(QSqlIndex &&other)Move-constructs a new QSqlIndex from other.
Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.
This function was introduced in Qt 6.6.
[noexcept] QSqlIndex::~QSqlIndex()Destroys the object and frees any allocated resources.
Appends the field field to the list of indexed fields. The field is appended with an ascending sort order.
This is an overloaded function.
Appends the field field to the list of indexed fields. The field is appended with an ascending sort order, unless desc is true.
Returns the cursorName.
Note: Getter function for property cursorName.
See also setCursorName().
Returns true if field i in the index is sorted in descending order; otherwise returns false.
Returns the name.
Note: Getter function for property name.
See also setName().
Sets cursorName to cursorName.
Note: Setter function for property cursorName.
See also cursorName().
If desc is true, field i is sorted in descending order. Otherwise, field i is sorted in ascending order (the default). If the field does not exist, nothing happens.
See also isDescending().
Sets name to name.
Note: Setter function for property name.
See also name().
[noexcept, since 6.6] QSqlIndex &QSqlIndex::operator=(QSqlIndex &&other)Move-assigns other to this QSqlIndex instance.
Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.
This function was introduced in Qt 6.6.
Sets the index equal to other.
