接下来看 我们再深入一些,看一下元组 t_data 内部的 attrs 信息:shell testdb=# SELECT lp,lp_off, t_xmin, t_ctid, t_attrs FROM heap_page_item_attrs(get_raw_page('d', 0), 'd') where lp < 5; lp | lp_off | t_xmin | t_ctid | t_attrs ---+---+---+---+--- 1 | 8...
test=# select * from heap_page_item_attrs(get_raw_page('t',0),'t'); lp | lp_off | lp_flags | lp_len | t_xmin | t_xmax | t_field3 | t_ctid | t_infomask2 | t_infomask | t_hoff | t_bits | t_oid | t_attrs ---+---+---+---+---+---+---+---+---+-...
null); } public Button(Context context, AttributeSet attrs) { this(context, attrs, com.android.internal.R.attr.buttonStyle); } public Button(Context context, AttributeSet attrs, int defStyleAttr) { this(context, attrs