Question

Is it possible to make the schema name dynamic in a BIRT query.

I tried this:

SELECT CURRENT DATE AS DATE,  (CASE WHEN DAYOFWEEK(CURRENT DATE) = 1 THEN 'SUNDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 2 THEN 'MONDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 3 THEN 'TUESDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 4 THEN 'WEDNESDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 5 THEN 'THURSDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 6 THEN 'FRIDAY'       WHEN DAYOFWEEK(CURRENT DATE) = 7 THEN 'SATURDAY'       END) AS DAYOFWEEK FROM **?**.COBOL_CALENDAR  WHERE SERVICE_DATE = CURRENT DATE' 

This generates the following error: The following items have errors:

ReportDesign (id = 1):  + Cannot get the result set metadata. SQL statement does not return a ResultSet object. SQL error #1: [IBM][CLI Driver][DB2] SQL0104N  An unexpected token '?' was found following ''.  Expected tokens may include:  '( TABLE FINAL <IDENTIFIER> XMLTABLE'.  SQLSTATE=42601 

But the ? only seems to work for the where clause.

I need to pass the schema as a param and use dynamically because it changes based on dev/cat/prod

is there not some way to genereate sql outsite of the birt xml and inject it somehow??

I did some more searching on the subject and found this solution

<method name='beforeOpen'><![CDATA[this.queryText = 'SELECT CURRENT DATE AS DATE, '+ '(CASE WHEN DAYOFWEEK(CURRENT DATE) = 1 THEN 'SUNDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 2 THEN 'MONDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 3 THEN 'TUESDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 4 THEN 'WEDNESDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 5 THEN 'THURSDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 6 THEN 'FRIDAY''+ '      WHEN DAYOFWEEK(CURRENT DATE) = 7 THEN 'SATURDAY''+ '      END) AS DAYOFWEEK'+ 'FROM '+params['SCHEMA']+'.COBOL_CALENDAR'+ ' WHERE SERVICE_DATE = CURRENT DATE';]]></method> 

However regardless of how many examples that are out there on this issue injecting sql in this manner only generates the following error.

ReportDesign (id = 1):  + Cannot get the result set metadata. SQL statement does not return a ResultSet object. SQL error #1: [IBM][CLI Driver][DB2] SQL0104N  An unexpected token 'SCHEMANAME' was found following ''.  Expected tokens may include:  ', FROM INTO'.  SQLSTATE=42601 

I even tried the reportContext.getParameterValue('SCHEMANAME') route with the same results.

Answer 1

ARRRGH it was a stupid problem with spaces!!

‘ END) AS DAYOFWEEK’+ ‘FROM ‘+params[‘SCHEMA’]+’.COBOL_CALENDAR’+

Adding a space in front of the FROM fixed it.

bangs head on lcd display.