class QSqlIndex¶

The QSqlIndex class provides functions to manipulate and describe database indexes. More…

Synopsis¶

Methods¶

def __init__()
def append()
def cursorName()
def isDescending()
def name()
def setCursorName()
def setDescending()
def setName()
def swap()

Note

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Detailed Description¶

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.

__init__(other)¶

Parameters:: other – QSqlIndex

Constructs a copy of other.

__init__([cursorName=""[, name=""]])

Parameters:

cursorName – str
name – str

Constructs an empty index using the cursor name cursorname and index name name.

append(field, desc)¶

Parameters:

field – QSqlField
desc – bool

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.

cursorName()¶

Return type:: str

Returns the name of the cursor which the index is associated with.

See also

setCursorName()

isDescending(i)¶

Parameters:: i – int
Return type:: bool

Returns true if field i in the index is sorted in descending order; otherwise returns false.

name()¶

Return type:: str

Returns the name of the index.

See also

setName()

setCursorName(cursorName)¶

Parameters:: cursorName – str

Sets the name of the cursor that the index is associated with to cursorName.

See also

cursorName()

setDescending(i, desc)¶

Parameters:

i – int
desc – bool

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()

setName(name)¶

Parameters:: name – str

Sets the name of the index to name.

See also

name()

swap(other)¶

Parameters:: other – QSqlIndex