CONNECT BY PRIOR statement issue

Hi,

I'm using the below select query to build a relationship b/w ID & parent_id, but HANA studio is throwing a syntax error. I don't see a problem around the syntax. Please throw some light's here.

SELECT * FROM "SIVA_TEST"."Core_Competency" START with  "Competency_ID"=1

CONNECT BY PRIOR "Competency_ID" = "Parent_Competency_ID"   ;

Error:

Could not execute 'SELECT * FROM "SIVA_TEST"."Core_Competency" START WITH "Competency_ID"='1' CONNECT BY PRIOR ...' in 170 ms 563 µs .

SAP DBTech JDBC: [257] (at 46): sql syntax error: incorrect syntax near "START": line 2 col 1 (at pos 46)

Table struct:

create column table "SIVA_TEST"."Core_Competency"("Competency_ID" integer,

"Competency_Name" varchar(200),

"Competency_description" varchar(1000),

"Parent_Competency_ID" integer,

"start_date" date,

primary key("Competency_ID"));

Thanks,

Siva.