SQL-SAP HANA-列表中的REPLACE_REGEXPR

Question

I have some tables on SAP HANA and „create column table“ to combine multiple „raw tables“ and need to replace strings from one column in the newly created table. Tablename “Testsubject_status” Column name “STATUS”. The reason why I need to replace the strings, is to get a harmonized wording on specific entries. With the following example, it is hopefully more clear what I mean:

Table name: Testsubject_status --- Column: Status

• Test me
• Test him
• Test with the ID 1237 is done
• Test her
• Test with the ID 928162 is done
• Test with the ID 991 is done

The result should be

Table name: Testsubject_status --- Column: Status

• Test me
• Test him
• Test is done
• Test her
• Test is done
• Test is done

I tried the following:

CREATE COLUMN TABLE SCHEMATTT.Testsubject_status AS (
    Select
        Table1.Person AS “Person”,
        Table1.Vers AS “Vers”,
        Table2.Flnr AS “Flnr”,
        Table3.Status AS “Status”
FROM 
    SCHEMATTT.Table1, SCHEMATTT.Table2, SCHEMATTT.Table3 
WHERE SCHEMATTT.Table1.Person = SCHEMATTT.Table2.Person
AND SCHEMATTT.Table2.Flnr = SCHEMATTT.Table3.Flnr


SELECT
REPLACE_REGEXPR (‘with the id \d{1,}’ IN ‘TEST with %’ WITH ‘’) “replace_regexpr”
FROM SCHEMATTT.Testsubject_status
);

Creating the table is working. The Replace_Regexpr statement is only working if I do not run it together with the create column table statement and then only creates a table with one column and the entries 'TEST with %' in every row.

Additional info:

• There is not only the “Test is done” string that needs to be harmonized, but a few others as well. So I need to use the replace statement more than once in this specific column “Status”
• The "Test is done" Statement is not 1:1 with another Statement in the table, so the other statements can't be used in any way to do this :-)

Not sure if creating the table in this way is the best one, but I guess that's another story 

Thank you in advance for your input!

This Picture is for clarification in the comments:

Answer 1

@Mike, could you please try following SQLScript command

CREATE COLUMN TABLE Testsubject_status2 AS (
Select
    Table1.Person AS "Person",
    Table1.Vers AS "Vers",
    Table2.Flnr AS "Flnr",
    Table3.Status AS "Status",
    REPLACE_REGEXPR ('test with the id [[:digit:]]* is done' FLAG 'i' IN Table3.STATUS WITH 'Test is done') "replace_regexpr"
FROM 
   Table1, Table2, Table3 
WHERE Table1.Person = Table2.Person
AND Table2.Flnr = Table3.Flnr
);

This will produce a table with following sample data

Note that the STATUS column is replaced with a static text if there is a match for the given condition. Else the STATUS text is kept as it is

For the additional info, I added following expressions but I did not like it much Maybe there are better solutions

REPLACE_REGEXPR (
    '(test with the id|Deployment for the ID) [[:digit:]]* is (done|completed)' 
    FLAG 'i' 
    IN Table3.STATUS 
    WITH 
        case 
            when Table3.STATUS LIKE_REGEXPR('test') Flag 'i' then 'test is done' 
            when Table3.STATUS LIKE_REGEXPR('deploy') Flag 'i' then 'deployment is done' 
            else Table3.STATUS
        end 
)  as "replace_regexpr_ext"

You can add this add a new calculated column in your table definitions script

I assume you have following status text in your table data:

• Deployment for the ID 234 is completed
• Deploy development