QSqlRecord

The QSqlRecord class encapsulates a database record. More…

Inherited by: QSqlIndex

Synopsis

Functions

• def __eq__ (other)

• def __ne__ (other)

• def append (field)

• def clear ()

• def clearValues ()

• def contains (name)

• def count ()

• def field (i)

• def field (name)

• def fieldName (i)

• def indexOf (name)

• def insert (pos, field)

• def isEmpty ()

• def isGenerated (i)

• def isGenerated (name)

• def isNull (i)

• def isNull (name)

• def keyValues (keyFields)

• def remove (pos)

• def replace (pos, field)

• def setGenerated (i, generated)

• def setGenerated (name, generated)

• def setNull (i)

• def setNull (name)

• def setValue (i, val)

• def setValue (name, val)

• def value (i)

• def value (name)

Detailed Description

The QSqlRecord class encapsulates the functionality and characteristics of a database record (usually a row in a table or view within the database). QSqlRecord supports adding and removing fields as well as setting and retrieving field values.

The values of a record’s fields can be set by name or position with setValue() ; if you want to set a field to null use setNull() . To find the position of a field by name use indexOf() , and to find the name of a field at a particular position use fieldName() . Use field() to retrieve a QSqlField object for a given field. Use contains() to see if the record contains a particular field name.

When queries are generated to be executed on the database only those fields for which isGenerated() is true are included in the generated SQL.

A record can have fields added with append() or insert() , replaced with replace() , and removed with remove() . All the fields can be removed with clear() . The number of fields is given by count() ; all their values can be cleared (to null) using clearValues() .

See also

QSqlField record()

class PySide2.QtSql.QSqlRecord

PySide2.QtSql.QSqlRecord(other)

param other

PySide2.QtSql.QSqlRecord

Constructs an empty record.

See also

isEmpty() append() insert()

Constructs a copy of other .

QSqlRecord is implicitly shared . This means you can make copies of a record in constant time .

PySide2.QtSql.QSqlRecord.append(field)

Parameters

field – PySide2.QtSql.QSqlField

Append a copy of field field to the end of the record.

See also

insert() replace() remove()

PySide2.QtSql.QSqlRecord.clear()

Removes all the record’s fields.

See also

clearValues() isEmpty()

PySide2.QtSql.QSqlRecord.clearValues()

Clears the value of all fields in the record and sets each field to null.

See also

setValue()

PySide2.QtSql.QSqlRecord.contains(name)

Parameters

name – str

Return type

bool

Returns true if there is a field in the record called name ; otherwise returns false .

PySide2.QtSql.QSqlRecord.count()

Return type

int

Returns the number of fields in the record.

See also

isEmpty()

PySide2.QtSql.QSqlRecord.field(name)

Parameters

name – str

Return type

PySide2.QtSql.QSqlField

PySide2.QtSql.QSqlRecord.field(i)

Parameters

i – int

Return type

PySide2.QtSql.QSqlField

Returns the field at position index . If the index is out of range, function returns a default-constructed value .

PySide2.QtSql.QSqlRecord.fieldName(i)

Parameters

i – int

Return type

str

Returns the name of the field at position index . If the field does not exist, an empty string is returned.

See also

indexOf()

PySide2.QtSql.QSqlRecord.indexOf(name)

Parameters

name – str

Return type

int

Returns the position of the field called name within the record, or -1 if it cannot be found. Field names are not case-sensitive. If more than one field matches, the first one is returned.

See also

fieldName()

PySide2.QtSql.QSqlRecord.insert(pos, field)

Parameters

• pos – int

• field – PySide2.QtSql.QSqlField

Inserts the field field at position pos in the record.

See also

append() replace() remove()

PySide2.QtSql.QSqlRecord.isEmpty()

Return type

bool

Returns true if there are no fields in the record; otherwise returns false .

See also

append() insert() clear()

PySide2.QtSql.QSqlRecord.isGenerated(name)

Parameters

name – str

Return type

bool

PySide2.QtSql.QSqlRecord.isGenerated(i)

Parameters

i – int

Return type

bool

This is an overloaded function.

Returns true if the record has a field at position index and this field is to be generated (the default); otherwise returns false .

See also

setGenerated()

PySide2.QtSql.QSqlRecord.isNull(name)

Parameters

name – str

Return type

bool

PySide2.QtSql.QSqlRecord.isNull(i)

Parameters

i – int

Return type

bool

This is an overloaded function.

Returns true if the field index is null or if there is no field at position index ; otherwise returns false .

PySide2.QtSql.QSqlRecord.keyValues(keyFields)

Parameters

keyFields – PySide2.QtSql.QSqlRecord

Return type

PySide2.QtSql.QSqlRecord

Returns a record containing the fields represented in keyFields set to values that match by field name.

PySide2.QtSql.QSqlRecord.__ne__(other)

Parameters

other – PySide2.QtSql.QSqlRecord

Return type

bool

Returns true if this object is not identical to other ; otherwise returns false .

See also

operator==()

PySide2.QtSql.QSqlRecord.__eq__(other)

Parameters

other – PySide2.QtSql.QSqlRecord

Return type

bool

Returns true if this object is identical to other (i.e., has the same fields in the same order); otherwise returns false .

See also

operator!=()

PySide2.QtSql.QSqlRecord.remove(pos)

Parameters

pos – int

Removes the field at position pos . If pos is out of range, nothing happens.

See also

append() insert() replace()

PySide2.QtSql.QSqlRecord.replace(pos, field)

Parameters

• pos – int

• field – PySide2.QtSql.QSqlField

Replaces the field at position pos with the given field . If pos is out of range, nothing happens.

See also

append() insert() remove()

PySide2.QtSql.QSqlRecord.setGenerated(name, generated)

Parameters

• name – str

• generated – bool

PySide2.QtSql.QSqlRecord.setGenerated(i, generated)

Parameters

• i – int

• generated – bool

This is an overloaded function.

Sets the generated flag for the field index to generated .

See also

isGenerated()

PySide2.QtSql.QSqlRecord.setNull(name)

Parameters

name – str

PySide2.QtSql.QSqlRecord.setNull(i)

Parameters

i – int

Sets the value of field index to null. If the field does not exist, nothing happens.

See also

isNull() setValue()

PySide2.QtSql.QSqlRecord.setValue(name, val)

Parameters

• name – str

• val – object

PySide2.QtSql.QSqlRecord.setValue(i, val)

Parameters

• i – int

• val – object

PySide2.QtSql.QSqlRecord.value(name)

Parameters

name – str

Return type

object

PySide2.QtSql.QSqlRecord.value(i)

Parameters

i – int

Return type

object

Returns the value of the field located at position index in the record. If index is out of bounds, an invalid QVariant is returned.

See also

setValue() fieldName() isNull()