Escape ' ' while creating a collection in Oracle APEX

Question

Hi all
I am creating a collection where I am using substr and instr functions and it does give an error message as below
• ORA-06550: line 14, column 79: PLS-00103: Encountered the symbol ", -1)) OWSR, null PRIM_ADD , null PRIMA" when expecting one of the following: ) , * & = - + < / > at in is mod remainder not rem <an exponent (**)> <> or != or ~= >= <= <> and or like like2 like4 likec between || multiset member submultiset
Relevant Portion where the error pops up:
APEX_COLLECTION.CREATE_COLLECTION_FROM_QUERY(
p_collection_name => 'RANGE_COLLECTION',
p_query => 'SELECT
          :P999_LOC_TYPE ADD_TYPE_ID
          , TRIM(:P999_OWSR) PRIM_ST
          , SUBSTR(TRIM(:P999_OWSR),1,1) PRIM_DIR
          , SUBSTR(TRIM(:P999_OWSR),INSTR(TRIM(:P999_OWSR), ' ', -1)) PRIM_SUF
......... on the line below
SUBSTR(TRIM(:P999_OWSR),INSTR(TRIM(:P999_OWSR), ' ', -1)) PRIM_SUF
Does anyone have any solution how to escape the single quotes in Oracle APEX 4.2. - like \' or something? I already tried using backslash but had no luck.
Would really appreciate your help ASAP.
Thanks,
Rads

Answer 1

Rads wrote:
Does anyone have any solution how to escape the single quotes in Oracle APEX 4.2. - like \' or something? I already tried using backslash but had no luck.Quotes in string liberals in Oracle are escaped by doubling them up:
execute immediate 'update emp set sal = sal * 1.2 where ename = ''SCOTT''';However a better approach when dealing with SQL strings is to use the alternative quoting mechanism:
execute immediate q'{update emp set sal = sal * 1.2 where ename = 'SCOTT'}';as this allows the original string to be left unaltered.