// writeColumnMutation adds column as a mutation and writes the
// descriptor to the DB.
func (mt mutationTest) writeColumnMutation(column string, m sqlbase.DescriptorMutation) {
_, i, err := mt.tableDesc.FindColumnByName(column)
if err != nil {
mt.Fatal(err)
}
col := mt.tableDesc.Columns[i]
mt.tableDesc.Columns = append(mt.tableDesc.Columns[:i], mt.tableDesc.Columns[i+1:]...)
m.Descriptor_ = &sqlbase.DescriptorMutation_Column{Column: &col}
mt.writeMutation(m)
}
// writeIndexMutation adds index as a mutation and writes the
// descriptor to the DB.
func (mt mutationTest) writeIndexMutation(index string, m sqlbase.DescriptorMutation) {
tableDesc := mt.tableDesc
_, i, err := tableDesc.FindIndexByName(index)
if err != nil {
mt.Fatal(err)
}
idx := tableDesc.Indexes[i]
tableDesc.Indexes = append(tableDesc.Indexes[:i], tableDesc.Indexes[i+1:]...)
m.Descriptor_ = &sqlbase.DescriptorMutation_Index{Index: &idx}
mt.writeMutation(m)
}