Capturing the o/p of "execute immediate" to a variable - snowflake-cloud-data-platform

Question

I have the need to capture the o/p of "execute immediate" statement and use that o/p variable in incremental steps execution of the proc.
Like the code is :
var_01 := 'SELECT COUNT(1) AS cnt FROM ALL_RESOURCE_MONITOR_MASTER WHERE' || ' '
|| 'account_name = ' ||''''|| lv_acct_name_new ||''''|| ' ' || 'AND' || ' '
|| 'rm_type= ' ||''''|| type || ''''||' ' || 'AND' || ' '
|| 'env= ' ||''''|| env || ''''||' ';
cnt := (execute immediate :var_01);
Now post I get the cnt as populated, then I need to run the below if~else statement:
if (cnt > 0) then
return 'execute the statement';
else
return 'Resource monitor already present hence insert skipped';
end if;
But the problem is when I try to execute this block I am always getting an error like :
SQL compilation error: Invalid expression value (?SqlExecuteImmediateDynamic?) for assignment.
Please do provide your inputs on resolving this. Thanks in advance!!

Answer 1

Unfortunately there is no syntax like EXECTUE <sql> INTO <output_variable_list> USING <input_variable_list> known from different dialects.
EXECUTE IMMEDIATE:
Executes a string that contains a SQL statement or a Snowflake Scripting statement.
EXECUTE IMMEDIATE '<string_literal>'
[ USING (bind_variable_1 [, bind_variable_2 ...] ) ] ;
In this scenario there is no need to use dynamic SQL for checking in metadata table as it could be rewritten to use parametrized if-statement:
CREATE OR REPLACE TABLE ALL_RESOURCE_MONITOR_MASTER
AS
SELECT 'acc1' AS account_name, 'TEST' AS env, 'WAREHOUSE' AS rm_type;
Code:
DECLARE
lv_acct_name_new TEXT := 'acc1';
type TEXT := 'WAREHOUSE';
env TEXT := 'TEST';
BEGIN
IF (EXISTS (SELECT 1
FROM ALL_RESOURCE_MONITOR_MASTER
WHERE account_name = :lv_acct_name_new
AND rm_type = :type
AND env = :env
)) THEN
RETURN 'Executing some code';
ELSE
RETURN 'Resource monitor already present hence insert skipped';
END IF;
END;