從字符串中提取多個元素

Question

你好人們的Stackoverflow 我有一個由自動生成的字符串組成的sql列。我需要從這個字符串中提取數字值以插入新列以供參考。從來沒有必要像這樣操縱一個字符串，但我真的很感謝我能得到任何幫助。 我做了一個我想要的excel模型 - 最左邊的「文本」列是我想要縮小到後面的列的那一列。注意：我已經把SQL'字符串，它們不是字符串的一部分：

Text Column                                      ReserveFrom ReserveTo PaymentFrom paymentTo 
'Scheme ELS updated. Reserve Authority Level changed from: 11000000.00 to: 8000000.00.'                   11000000 8000000 
'Scheme CNST updated. Payment Authority Level changed from: 8000000.00 to: 10000000.00. Reserve Authority Level changed from: 8000000.00 to: 10000000.00.'  11000000 8000000  11000000  8000000 
'Scheme ELS updated. Payment Authority Level changed from: 350000.00 to: 100000.00. '                          350000  100000 

這些文本列的三個排列。

Answer 1

create table #text_table (text_field varchar(250)) 


insert into #text_table values 
('Scheme ELS updated. Reserve Authority Level changed from: 11000000.00 to: 8000000.00.'),  
('Scheme CNST updated. Payment Authority Level changed from: 8000000.00 to: 10000000.00. Reserve Authority Level changed from: 8000000.00 to: 10000000.00.'), 
('Scheme ELS updated. Payment Authority Level changed from: 350000.00 to: 100000.00.') 

drop table #text_table2 
select *, 
case when charindex('Reserve', text_field ,0) > 0 and charindex('Payment', text_field,0) = 0 then 'Reserve' 
    when charindex('Payment', text_field,0) > 0 and charindex('Reserve', text_field,0) = 0 then 'Payment' 
    when charindex('Payment', text_field,0) > 0 and charindex('Reserve', text_field,0) > 0 then 'Both' 
    else 'N/A' end as tag, 
charindex('from: ',text_field,0) as From_Index, 
charindex(' to: ',text_field, charindex('from: ',text_field,0)) as to_index, 
charindex('.',text_field, charindex(' to: ',text_field, charindex('from: ',text_field,0))) as dot_index 
into #text_table2 
from #text_table 

select * 
into #simple 
from #text_table2 where tag in ('Reserve','Payment') 

select 
substring(text_field, 0, charindex('.00. ',text_field,0)+3) as text_field 
into #parse 
from #text_table2 where tag = 'Both' 
union 
select 
substring(text_field, charindex('.00. ',text_field,0)+5, charindex('.00.',text_field,charindex('.00.',text_field,0)+3)) 
from #text_table2 where tag = 'Both' 

insert into #simple 
select *, 
case when charindex('Reserve', text_field ,0) > 0 and charindex('Payment', text_field,0) = 0 then 'Reserve' 
    when charindex('Payment', text_field,0) > 0 and charindex('Reserve', text_field,0) = 0 then 'Payment' 
    when charindex('Payment', text_field,0) > 0 and charindex('Reserve', text_field,0) > 0 then 'Both' 
    else 'N/A' end as tag, 
charindex('from: ',text_field,0) as From_Index, 
charindex(' to: ',text_field, charindex('from: ',text_field,0)) as to_index, 
charindex('.',text_field, charindex(' to: ',text_field, charindex('from: ',text_field,0))) as dot_index 
from #parse 




select *, 
substring(text_field, from_index+6, to_index - from_index - 6) as From_Value, 
substring(text_field, to_index+4, dot_index - to_index - 1) as To_Value 
from #simple