Where clause in Dynamic sql - oracle

Question

I am trying to get all the tables where bank_id is 01.
I have written the following block
DECLARE
cursor cBankId is
select owner||'.'||table_name from all_tab_columns where column_name = 'BANK_ID';
v_table all_tab_columns.table_name%TYPE;
vcount varchar2(50);
BEGIN
open cBankId;
loop
fetch cBankId into v_table;
exit when cBankId%notfound;
execute immediate 'select count(*) from ' || v_table into vcount || ' where bank_id = 01';
IF vcount > 0 THEN
DBMS_OUTPUT.PUT_LINE (v_table);
END IF;
end loop;
close cBankId;
END;
I want to know how to put where clause in the execute immediate statement .
I am getting the error
ORA-06550: line 15, column 67:
PLS-00103: Encountered the symbol "|" when expecting one of the following:
. ( , % ; return returning using

Answer 1

You only need to change the order you're writing the parts of your query.
When using dynamic SQL, you need something like this:
SQL> declare
2 v_table varchar2(30);
3 vCount number;
4 begin
5 v_table := 'dual';
6 execute immediate 'select count(*) from ' || v_table || ' where 1=1' into vcount;
7 --
8 dbms_output.put_line('vCount: ' || vCount);
9 end;
10
11 /
vCount: 1
PL/SQL procedure successfully completed.
That is: execute immediate 'select ... from ... where ...' INTO ...;

Answer 2

You can't dynamically use a variable for the table name, instead use:
DECLARE
cursor cBankId is
select owner||'.'||table_name from all_tab_columns where column_name = 'BANK_ID';
v_table all_tab_columns.table_name%TYPE;
vcount varchar2(50);
v_sql varchar2(1000);
BEGIN
open cBankId;
loop
fetch cBankId into v_table;
exit when cBankId%notfound;
v_sql := 'select count(*) from ' || v_table || ' into vcount where bank_id = 01';
execute immediate v_sql;
IF vcount > 0 THEN
DBMS_OUTPUT.PUT_LINE (v_table);
END IF;
end loop;
close cBankId;
END;