func (u *updateNode) Next() (bool, error) {
next, err := u.run.rows.Next()
if !next {
if err == nil {
// We're done. Finish the batch.
err = u.tw.finalize()
}
return false, err
}
if u.run.explain == explainDebug {
return true, nil
}
tracing.AnnotateTrace()
oldValues := u.run.rows.Values()
// Our updated value expressions occur immediately after the plain
// columns in the output.
updateValues := oldValues[len(u.tw.ru.fetchCols):]
oldValues = oldValues[:len(u.tw.ru.fetchCols)]
u.checkHelper.loadRow(u.tw.ru.fetchColIDtoRowIndex, oldValues, false)
u.checkHelper.loadRow(u.updateColsIdx, updateValues, true)
if err := u.checkHelper.check(&u.p.evalCtx); err != nil {
return false, err
}
// Ensure that the values honor the specified column widths.
for i := range updateValues {
if err := sqlbase.CheckValueWidth(u.tw.ru.updateCols[i], updateValues[i]); err != nil {
return false, err
}
}
// Update the row values.
for i, col := range u.tw.ru.updateCols {
val := updateValues[i]
if !col.Nullable && val == parser.DNull {
return false, sqlbase.NewNonNullViolationError(col.Name)
}
}
newValues, err := u.tw.row(append(oldValues, updateValues...))
if err != nil {
return false, err
}
resultRow, err := u.rh.cookResultRow(newValues)
if err != nil {
return false, err
}
u.run.resultRow = resultRow
return true, nil
}
func (u *updateNode) Next() bool {
if u.run.done || u.run.err != nil {
return false
}
if !u.run.rows.Next() {
// We're done. Finish the batch.
err := u.tw.finalize()
u.run.err = err
u.run.done = true
return false
}
tracing.AnnotateTrace()
oldValues := u.run.rows.Values()
// Our updated value expressions occur immediately after the plain
// columns in the output.
updateValues := oldValues[len(u.tableDesc.Columns):]
oldValues = oldValues[:len(u.tableDesc.Columns)]
// Ensure that the values honor the specified column widths.
for i := range updateValues {
if err := sqlbase.CheckValueWidth(u.updateCols[i], updateValues[i]); err != nil {
u.run.err = err
return false
}
}
// Update the row values.
for i, col := range u.updateCols {
val := updateValues[i]
if !col.Nullable && val == parser.DNull {
u.run.err = fmt.Errorf("null value in column %q violates not-null constraint", col.Name)
return false
}
}
newValues, err := u.tw.row(append(oldValues, updateValues...))
if err != nil {
u.run.err = err
return false
}
resultRow, err := u.rh.cookResultRow(newValues)
if err != nil {
u.run.err = err
return false
}
u.run.resultRow = resultRow
return true
}
func (n *insertNode) Next() bool {
if n.run.done || n.run.err != nil {
return false
}
if !n.run.rows.Next() {
// We're done. Finish the batch.
n.run.err = n.tw.finalize()
n.run.done = true
return false
}
rowVals := n.run.rows.Values()
// The values for the row may be shorter than the number of columns being
// inserted into. Generate default values for those columns using the
// default expressions.
for i := len(rowVals); i < len(n.insertCols); i++ {
if n.defaultExprs == nil {
rowVals = append(rowVals, parser.DNull)
continue
}
d, err := n.defaultExprs[i].Eval(n.p.evalCtx)
if err != nil {
n.run.err = err
return false
}
rowVals = append(rowVals, d)
}
// Check to see if NULL is being inserted into any non-nullable column.
for _, col := range n.tableDesc.Columns {
if !col.Nullable {
if i, ok := n.insertColIDtoRowIndex[col.ID]; !ok || rowVals[i] == parser.DNull {
n.run.err = fmt.Errorf("null value in column %q violates not-null constraint", col.Name)
return false
}
}
}
// Ensure that the values honor the specified column widths.
for i := range rowVals {
if err := sqlbase.CheckValueWidth(n.insertCols[i], rowVals[i]); err != nil {
n.run.err = err
return false
}
}
if len(n.checkExprs) > 0 {
// Populate qvals.
for ref, qval := range n.qvals {
// The colIdx is 0-based, we need to change it to 1-based.
ri, has := n.insertColIDtoRowIndex[sqlbase.ColumnID(ref.colIdx+1)]
if !has {
n.run.err = fmt.Errorf("failed to to find column %d in row", sqlbase.ColumnID(ref.colIdx+1))
return false
}
qval.datum = rowVals[ri]
}
for _, expr := range n.checkExprs {
if d, err := expr.Eval(n.p.evalCtx); err != nil {
n.run.err = err
return false
} else if res, err := parser.GetBool(d); err != nil {
n.run.err = err
return false
} else if !res {
// Failed to satisfy CHECK constraint.
n.run.err = fmt.Errorf("failed to satisfy CHECK constraint (%s)", expr.String())
return false
}
}
}
_, err := n.tw.row(rowVals)
if err != nil {
n.run.err = err
return false
}
for i, val := range rowVals {
if n.run.rowTemplate != nil {
n.run.rowTemplate[n.run.rowIdxToRetIdx[i]] = val
}
}
resultRow, err := n.rh.cookResultRow(n.run.rowTemplate)
if err != nil {
n.run.err = err
return false
}
n.run.resultRow = resultRow
return true
}
func (n *insertNode) Next() (bool, error) {
ctx := context.TODO()
if next, err := n.run.rows.Next(); !next {
if err == nil {
// We're done. Finish the batch.
err = n.tw.finalize(ctx)
}
return false, err
}
if n.run.explain == explainDebug {
return true, nil
}
rowVals := n.run.rows.Values()
// The values for the row may be shorter than the number of columns being
// inserted into. Generate default values for those columns using the
// default expressions.
for i := len(rowVals); i < len(n.insertCols); i++ {
if n.defaultExprs == nil {
rowVals = append(rowVals, parser.DNull)
continue
}
d, err := n.defaultExprs[i].Eval(&n.p.evalCtx)
if err != nil {
return false, err
}
rowVals = append(rowVals, d)
}
// Check to see if NULL is being inserted into any non-nullable column.
for _, col := range n.tableDesc.Columns {
if !col.Nullable {
if i, ok := n.insertColIDtoRowIndex[col.ID]; !ok || rowVals[i] == parser.DNull {
return false, sqlbase.NewNonNullViolationError(col.Name)
}
}
}
// Ensure that the values honor the specified column widths.
for i := range rowVals {
if err := sqlbase.CheckValueWidth(n.insertCols[i], rowVals[i]); err != nil {
return false, err
}
}
n.checkHelper.loadRow(n.insertColIDtoRowIndex, rowVals, false)
if err := n.checkHelper.check(&n.p.evalCtx); err != nil {
return false, err
}
_, err := n.tw.row(ctx, rowVals)
if err != nil {
return false, err
}
for i, val := range rowVals {
if n.run.rowTemplate != nil {
n.run.rowTemplate[n.run.rowIdxToRetIdx[i]] = val
}
}
resultRow, err := n.rh.cookResultRow(n.run.rowTemplate)
if err != nil {
return false, err
}
n.run.resultRow = resultRow
return true, nil
}