Method isExistColumn

internal/sql/catalog/table.go:31–42

(cmd *ast.AlterTableCmd)

}

func (table *Table) isExistColumn(cmd *ast.AlterTableCmd) (int, error) {
	for i, c := range table.Columns {
		if c.Name == *cmd.Name {
			return i, nil
		}
	}
	if !cmd.MissingOk {
		return -1, sqlerr.ColumnNotFound(table.Rel.Name, *cmd.Name)
	}
	// Missing column is allowed
	return -1, nil
}

func (c *Catalog) addColumn(table *Table, cmd *ast.AlterTableCmd) error {
	for _, c := range table.Columns {