使用SQL計算寶寶每次吃奶的時間間隔(續)
阿新 • • 發佈：2019-12-16
本文是《使用SQL計算寶寶每次吃奶的時間間隔》的續篇，因為我工作繁忙，時常不能及時幫助媳婦兒記錄，為了讓不懂資料庫的媳婦兒也可以自己用手機熟練操作。我繼續做了一些修正和封裝：
- 1.給媳婦兒的手機下載一個terminal終端軟體terminus，實現只需開啟app就可以連線到環境；
- 2.跟媳婦兒進一步溝通需求，按她能夠接受的使用習慣來修正並封裝程式，原則是儘可能的簡化操作。
先來看下改進後最終的使用效果：
--1.手機上開啟terminus軟體，點選進入到終端，輸入 h 可以看到所有命令的說明： [oracle@jystdrac1 ~]$ h **Command for Baby's feed_time:** Usage: v - View Today's Result. vv <'mmdd'> - View one day's Result. i - Insert a row using current time. ii <'mmdd hh24:mi'> - Insert a row using input time. d <id> - Delete a mistake row by id. u <label> <id> - Update a mistake row by id. h - Help --2.輸入 v 可以看到今天的餵奶時間和間隔： [oracle@jystdrac1 ~]$ v View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 8 rows selected. --3.輸入 i 可以直接以當前系統時間插入一條資料，並顯示插入後的結果： [oracle@jystdrac1 ~]$ i Insert a row using current time: 1 row created. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 94 12-15 23:02 N 227 3.78 9 rows selected. --4.輸入 d <id> 可以刪除id對應的那行記錄，並顯示刪除後的結果： [oracle@jystdrac1 ~]$ d 94 Delete a mistake row by id: Enter value for id: old 1: delete from t_baby where id = &id new 1: delete from t_baby where id = 94 1 row deleted. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 8 rows selected. --5.輸入 u <label> <id> 可以更新指定id的label值，比如將id=55的記錄label值修改為'L'，代表這次餵奶量很少，不參與計算 [oracle@jystdrac1 ~]$ u l 55 Update a mistake row by id: Enter value for label: Enter value for id: old 1: update t_baby set label = upper('&label') where id = &id new 1: update t_baby set label = upper('l') where id = 55 1 row updated. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 56 12-15 10:40 N 392 6.53 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 7 rows selected. --6.輸入 u <label> <id> 可以更新指定id的label值，比如將id=55的記錄label值修改回'N',代表這次餵奶量正常，參與計算 [oracle@jystdrac1 ~]$ u n 55 Update a mistake row by id: Enter value for label: Enter value for id: old 1: update t_baby set label = upper('&label') where id = &id new 1: update t_baby set label = upper('n') where id = 55 1 row updated. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 8 rows selected. --7.輸入 ii <'mmdd hh24:mi'> 可以插入指定日期和時間 [oracle@jystdrac1 ~]$ ii '1215 23:00' Insert a row using input time(mmdd mi:ss) eg: 1215 10:00 Enter value for feed_time: old 1: insert into t_baby(id,feed_time) values(s1.nextval,to_date('&feed_time','mmdd hh24:mi')) new 1: insert into t_baby(id,feed_time) values(s1.nextval,to_date('1215 23:00','mmdd hh24:mi')) 1 row created. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 95 12-15 23:00 N 225 3.74 9 rows selected. --8.刪除id=95的這條測試記錄 [oracle@jystdrac1 ~]$ d 95 Delete a mistake row by id: Enter value for id: old 1: delete from t_baby where id = &id new 1: delete from t_baby where id = 95 1 row deleted. Commit complete. View Today's Result: ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 53 12-15 01:00 N 140 2.33 54 12-15 04:08 N 188 3.13 55 12-15 07:35 N 207 3.45 56 12-15 10:40 N 185 3.08 69 12-15 13:16 N 156 2.6 70 12-15 14:32 N 76 1.27 82 12-15 17:14 N 163 2.71 83 12-15 19:15 N 121 2.01 8 rows selected. --9.使用 vv 'mmdd' 可以顯示指定日期的餵奶間隔情況： [oracle@jystdrac1 ~]$ vv 1214 View Today's Result: Enter value for feed_time: Enter value for feed_time: old 2: from (select t.*, lag(feed_time) over(order by id) l_time from t_baby t where label <> 'L') where feed_time >= to_date('&feed_time','mmdd') and feed_time < to_date('&feed_time','mmdd') + 1 new 2: from (select t.*, lag(feed_time) over(order by id) l_time from t_baby t where label <> 'L') where feed_time >= to_date('1214','mmdd') and feed_time < to_date('1214','mmdd') + 1 ID FEED_TIME L LAG(min) LAG(h) ---------- ----------- - ---------- ---------- 41 12-14 01:55 N 265 4.42 42 12-14 04:58 N 183 3.05 43 12-14 08:25 N 207 3.45 44 12-14 11:23 N 178 2.97 45 12-14 12:23 N 60 1 46 12-14 15:00 N 157 2.62 47 12-14 17:22 N 142 2.37 48 12-14 18:45 N 83 1.38 49 12-14 22:40 N 235 3.92 9 rows selected.
經過一番演示，媳婦兒的反饋是非常滿意的，實際她最常用的還是v和i，非常方便，其他命令偶爾使用，其實只需記住h可以獲取到幫助即可。下面將本次的修正和封裝過程記錄一下：
- 1.環境變數配置別名
- 2.系統shell指令碼
- 3.底層SQL文字
1.環境變數配置別名
為了簡化操作，我將環境變數設定一些別名。
[oracle@jystdrac1 ~]$ cat ~/.bash_profile # 這裡省略原有環境變數內容,下面為在原始檔基礎上追加的內容： # Alias for baby's feed_time: alias h=/home/oracle/baby_readme.sh alias v=/home/oracle/baby_view.sh alias i=/home/oracle/baby_insert.sh alias d=/home/oracle/baby_delete.sh alias u=/home/oracle/baby_update.sh alias ii=/home/oracle/baby_insert_diy.sh alias vv=/home/oracle/baby_view_diy.sh
2.系統shell指令碼
baby_readme.sh
vi baby_readme.sh
#!/bin/bash # script:baby_readme.sh # version:1.01 #------------------------------------------------------------- echo "**Command for Baby's feed_time:**" echo "Usage:" echo " v - View Today's Result." echo " vv <'mmdd'> - View one day's Result." echo " i - Insert a row using current time." echo " ii <'mmdd hh24:mi'> - Insert a row using input time." echo " d <id> - Delete a mistake row by id." echo " u <label> <id> - Update a mistake row by id." echo " h - Help" #-------------------------------------------------------------
baby_view.sh
vi baby_view.sh
#!/bin/bash
# script:baby_view.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT View Today's Result:
@v3
EOF
#-------------------------------------------------------------baby_insert.sh
vi baby_insert.sh
#!/bin/bash
# script:baby_insert.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT Insert a row using current time:
@i1
PROMPT View Today's Result:
@v3
EOF
#-------------------------------------------------------------baby_delete.sh
vi baby_delete.sh
#!/bin/bash
# script:baby_delete.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT Delete a mistake row by id:
@d1
$1
commit;
PROMPT View Today's Result:
@v3
EOF
#-------------------------------------------------------------baby_insert_diy.sh
vi baby_insert_diy.sh
#!/bin/bash
# script:baby_insert_diy.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT Insert a row using input time(mmdd mi:ss) eg: 1215 10:00
@i2
$1
commit;
PROMPT View Today's Result:
@v3
EOF
#-------------------------------------------------------------baby_update.sh
vi baby_update.sh
#!/bin/bash
# script:baby_update.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT Update a mistake row by id:
@u1
$1
$2
commit;
PROMPT View Today's Result:
@v3
EOF
#-------------------------------------------------------------baby_view_diy.sh
vi baby_view_diy.sh
#!/bin/bash
# script:baby_view.sh
# version:1.01
#-------------------------------------------------------------
sqlplus -S test/test <<EOF
PROMPT View one day's Result:
@v4
$1
$1
EOF
#-------------------------------------------------------------3.底層SQL文字
--echo "v - View Today's Result."
[oracle@jystdrac1 ~]$ cat v3.sql
select id, to_char(feed_time,'mm-dd hh24:mi') "FEED_TIME", label, round((feed_time - l_time) * 24 * 60) "LAG(min)", round((feed_time - l_time) * 24, 2) "LAG(h)"
from (select t.*, lag(feed_time) over(order by id) l_time from t_baby t where label <> 'L') where feed_time >= trunc(sysdate)
/
-- echo " vv <'mmdd'> - View one day's Result."
[oracle@jystdrac1 ~]$ cat v4.sql
select id, to_char(feed_time,'mm-dd hh24:mi') "FEED_TIME", label, round((feed_time - l_time) * 24 * 60) "LAG(min)", round((feed_time - l_time) * 24, 2) "LAG(h)"
from (select t.*, lag(feed_time) over(order by id) l_time from t_baby t where label <> 'L') where feed_time >= to_date('&feed_time','mmdd') and feed_time < to_date('&feed_time','mmdd') + 1
/
--echo "i - Insert a row using current time."
[oracle@jystdrac1 ~]$ cat i1.sql
insert into t_baby(id,feed_time) values(s1.nextval,sysdate)
/
commit
/
--echo "ii - Insert a row using input time."
[oracle@jystdrac1 ~]$ cat i2.sql
insert into t_baby(id,feed_time) values(s1.nextval,to_date('&feed_time','mmdd hh24:mi'))
/
--echo "d - Delete a mistake row by id. "
[oracle@jystdrac1 ~]$ cat d1.sql
delete from t_baby where id = &id
/
--echo "u - Update a mistake row by id."
[oracle@jystdrac1 ~]$ cat u1.sql
update t_baby set label = upper('&label') where id = &id
/SQL文字獨立出來也方便後續需求有變化時快速更改