如何从db2表中的列中删除零

Question

I have a column with data zeros after 6th column

i want to remove the leading zero after the 6th pipe in the data.

Please let me know if there is any way to do it. I tried to use substr with Trim but its not working.

Answer 1

假设您的列称为COL ，类似以下内容的代码应该起作用：

CONCAT(SUBSTR(1,INSTR(COL,'|', 1,5)), LTRIM(SUBSTR(INSTR(COL,'|', 1,5)+1)),'0'))

Answer 2

Assuming from your current data that you need to only replace every occurrence of |00 with | , You can achieve thing using REPLACE function.

    SELECT 'TMB|MLE020828585|74384911WA3S|="''07300058"|74384911|0013' AS Current_String,
           replace('TMB|MLE020828585|74384911WA3S|="''07300058"|74384911|0013', '|00', '|') AS result_String

You can replace hard-coded value in above with your column name.

The above query generate result as below.

Current_String                                               |                     result_String
------------------------------------------------------------------------------------------------------------------------
TMB|MLE020828585|74384911WA3S|="'07300058"|74384911|0013     |   TMB|MLE020828585|74384911WA3S|="'07300058"|74384911|13

Hope this will help.

Answer 3

Oleg was correct in utilizing INSTR(), that is how I would do it. He was missing some arguments, though. Also, I wasn't able to get ltrim to work, so I cast it to an int instead. I tested and updated my table with your data using:

UPDATE mytable SET mycolumn = Substr(mycolumn , 1, Instr(mycolumn , '|', 1, 5)) || CAST(Substr(mycolumn , Instr(mycolumn , '|', 1, 5) + 1) AS INT)