| PostgreSQL 9.6.0 锟街诧拷
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| 锟斤拷一页 | 锟斤拷一锟斤拷 | 锟斤拷 11. 锟斤拷锟斤拷 | 锟斤拷一页 |
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟铰的憋拷锟斤拷
CREATE TABLE test1 (
id integer,
content varchar
);锟斤拷应锟矫凤拷锟斤拷锟杰讹拷锟斤拷锟斤拷锟斤拷式锟侥诧拷询锟斤拷
SELECT content FROM test1 WHERE id = constant;
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锟斤拷锟狡的凤拷锟斤拷也锟斤拷锟斤拷锟节大部分凤拷小说锟介籍锟叫ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟竭诧拷锟揭碉拷锟斤拷锟斤拷透锟斤拷畋伙拷占锟斤拷锟揭伙拷锟斤拷锟侥革拷锟斤拷锟斤拷锟斤拷蟹锟斤拷锟斤拷榧拷锟侥┪诧拷锟斤拷锟斤拷锟饺わ拷亩锟斤拷呖锟斤拷锟斤拷锟皆匡拷锟缴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷实锟揭筹拷锟斤拷锟斤拷锟揭拷亩锟斤拷锟斤拷锟斤拷锟斤拷锟窖帮拷腋锟斤拷锟饺わ拷牟锟斤拷稀锟斤拷锟斤拷锟斤拷锟斤拷叩锟斤拷锟斤拷锟斤拷锟阶硷拷锟斤拷枚锟斤拷呖锟斤拷芑锟斤拷锟揭碉拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷锟皆币诧拷锟揭わ拷锟斤拷锟叫╋拷锟斤拷锟斤拷锟斤拷锟斤拷谩锟�
锟斤拷锟斤拷前锟斤拷锟斤拷锟桔的ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�id锟斤拷锟较达拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷
CREATE INDEX test1_id_index ON test1 (id);
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为锟斤拷锟狡筹拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷DROP INDEX锟斤拷锟筋。锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷锟斤拷删锟斤拷锟斤拷
一锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵诧拷锟斤拷锟斤拷要锟斤拷一锟斤拷锟侥革拷预锟斤拷系统锟斤拷锟节憋拷锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷锟斤拷锟斤拷顺锟斤拷扫锟斤拷锟叫э拷矢锟斤拷锟绞笔癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷强锟斤拷锟斤拷锟揭拷锟斤拷诘锟斤拷锟斤拷锟�ANALYZE锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷统锟斤拷锟斤拷息锟皆憋拷锟窖拷婊拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺凤拷木锟斤拷锟斤拷锟酵拷锟�锟斤拷 14 锟斤拷锟斤拷锟斤拷息锟斤拷锟斤拷锟剿斤拷锟斤拷锟斤拷页锟揭伙拷锟斤拷锟斤拷锟斤拷欠锟绞癸拷锟斤拷约锟斤拷婊拷锟斤拷诤锟绞憋拷约锟轿裁达拷锟窖★拷锟�锟斤拷使锟斤拷锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷也锟斤拷使锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷UPDATE锟斤拷DELETE锟斤拷锟斤拷锟斤拷锟芥。锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷使锟矫★拷锟斤拷耍锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷系锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟接诧拷询锟斤拷锟劫度★拷
锟斤拷一锟斤拷锟斤拷锟斤拷洗锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟侥费很筹拷锟斤拷时锟戒。默锟斤拷锟斤拷锟斤拷拢锟�PostgreSQL锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷锟叫地斤拷锟叫讹拷锟斤拷SELECT锟斤拷锟筋）锟斤拷锟斤拷写锟斤拷INSERT锟斤拷UPDATE锟斤拷DELETE锟斤拷锟斤拷岜伙拷锟斤拷锟街憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟缴★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷锟角诧拷锟缴斤拷锟杰的★拷锟节达拷锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷锟叫碉拷写锟角匡拷锟杰的ｏ拷锟斤拷锟斤拷锟斤拷些锟斤拷锟斤拷锟斤拷要注锟解，锟斤拷锟斤拷锟斤拷息锟斤拷锟皆参匡拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷系统锟斤拷锟诫保锟斤拷锟斤拷锟斤拷锟酵拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷莶锟斤拷锟斤拷母锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷些锟斤拷锟劫伙拷硬锟斤拷诓锟窖拷锟绞癸拷玫锟斤拷锟斤拷锟接︼拷帽锟斤拷瞥锟斤拷锟�