本文整理汇总了Golang中github.com/cockroachdb/cockroach/sql/sqlbase.TableDescriptor.VisibleColumns方法的典型用法代码示例。如果您正苦于以下问题：Golang TableDescriptor.VisibleColumns方法的具体用法？Golang TableDescriptor.VisibleColumns怎么用？Golang TableDescriptor.VisibleColumns使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/cockroachdb/cockroach/sql/sqlbase.TableDescriptor的用法示例。
在下文中一共展示了TableDescriptor.VisibleColumns方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: processColumns
func (p *planner) processColumns(tableDesc *sqlbase.TableDescriptor,
node parser.QualifiedNames) ([]sqlbase.ColumnDescriptor, error) {
if node == nil {
// VisibleColumns is used here to prevent INSERT INTO <table> VALUES (...)
// (as opposed to INSERT INTO <table> (...) VALUES (...)) from writing
// hidden columns. At present, the only hidden column is the implicit rowid
// primary key column.
return tableDesc.VisibleColumns(), nil
}
cols := make([]sqlbase.ColumnDescriptor, len(node))
colIDSet := make(map[sqlbase.ColumnID]struct{}, len(node))
for i, n := range node {
// TODO(pmattis): If the name is qualified, verify the table name matches
// tableDesc.Name.
if err := n.NormalizeColumnName(); err != nil {
return nil, err
}
col, err := tableDesc.FindActiveColumnByName(n.Column())
if err != nil {
return nil, err
}
if _, ok := colIDSet[col.ID]; ok {
return nil, fmt.Errorf("multiple assignments to same column \"%s\"", n.Column())
}
colIDSet[col.ID] = struct{}{}
cols[i] = col
}
return cols, nil
}示例2: processColumns
func (p *planner) processColumns(tableDesc *sqlbase.TableDescriptor,
node parser.UnresolvedNames) ([]sqlbase.ColumnDescriptor, error) {
if node == nil {
// VisibleColumns is used here to prevent INSERT INTO <table> VALUES (...)
// (as opposed to INSERT INTO <table> (...) VALUES (...)) from writing
// hidden columns. At present, the only hidden column is the implicit rowid
// primary key column.
return tableDesc.VisibleColumns(), nil
}
cols := make([]sqlbase.ColumnDescriptor, len(node))
colIDSet := make(map[sqlbase.ColumnID]struct{}, len(node))
for i, n := range node {
c, err := n.NormalizeUnqualifiedColumnItem()
if err != nil {
return nil, err
}
if len(c.Selector) > 0 {
return nil, util.UnimplementedWithIssueErrorf(8318, "compound types not supported yet: %q", n)
}
col, err := tableDesc.FindActiveColumnByName(c.ColumnName)
if err != nil {
return nil, err
}
if _, ok := colIDSet[col.ID]; ok {
return nil, fmt.Errorf("multiple assignments to the same column %q", n)
}
colIDSet[col.ID] = struct{}{}
cols[i] = col
}
return cols, nil
}