How to write user-defined functions in snowflake? - snowflake-cloud-data-platform

Question

I am very new to Snowflake. Till now I had used Teradata for writing complex SQL queries.
In snowflake, I need to create and call macros (similar to Teradata), where I have to pass date as parameters, and within the function I have to append records in a table. Something along these lines:
CREATE TABLE SFAAP.WS_DIRBNK_DPST.PV_HIGH_RISK_FI_LIST
(
APP_DT DATE
,FI_NAME VARCHAR(50)
);
CREATE OR REPLACE FUNCTION SFAAP.INSERT_FI (DT DATE, CRED CHAR(5))
--RETURNS NULL
--COMMENT='Create list of high risk FI by date'
AS
'
INSERT INTO SFAAP.WS_DIRBNK_DPST.PV_HIGH_RISK_FI_LIST
TO_DATE(DD) --------------Passed Parameter
,FI_NAME
FROM
(
SELECT
FINANCIAL_INSTITUTION AS FI_NAME
,COUNT(DISTINCT CASE WHEN IND_FPFA_FRAUD = 1 THEN APP_ID ELSE NULL END) AS TOT_FPFA_APPS
,COUNT(DISTINCT APP_ID) AS TOT_APPS
,CAST(TOT_FPFA_APPS AS DECIMAL(38,2))/TOT_APPS AS FRAUD_RATE
FROM
(
SELECT
A.*
,C.FINANCIAL_INSTITUTION
FROM BASE_05 A
LEFT JOIN
(
SELECT
BNK_ACCT_NBR_TOK
,BNK_TRAN_TYP_CDE
,ALT_DR_CR_CDE
,TRAN_1_DSC_TOK
,TRAN_DT
,TRAN_AMT
FROM "SFAAP"."V_SOT_DIRBNK_CLB_FRD_CRD"."BNK_DPS_TRAN_RLT_INFO"
WHERE TRAN_DT BETWEEN DATEADD(Day,-90,TO_DATE(DD)) AND TO_DATE(DD) --------------Passed Parameter, does calculation in the 90 days window from the passed date
AND ALT_DR_CR_CDE = TO_CHAR(CRED) --------------Passed Parameter
AND BNK_TRAN_TYP_CDE IN (22901,56003,56002,56302,56303,56102,70302)
AND TRAN_AMT>=5
QUALIFY ROW_NUMBER() OVER(PARTITION BY BNK_ACCT_NBR_TOK, TRAN_DT, TRAN_AMT, BNK_TRAN_TYP_CDE ORDER BY TRAN_DT ASC, TRAN_AMT DESC)=1
) B
ON A.BNK_ACCT_NBR = B.BNK_ACCT_NBR_TOK
LEFT JOIN SFAAP.WS_DIRBNK_DPST.PV_FRAUD_METRICS_03 C
ON B.TRAN_1_DSC_TOK = C.TOKEN_NAME
)SUB_A
GROUP BY 1
)SUB_B
WHERE FINANCIAL_INSTITUTION IS NOT NULL
AND TOT_APPS>=3
AND FRAUD_RATE>=0.20
'
;
I took some guidance from this answer here, but I am still not there yet. Here's the error which I am getting:
Due to lack of experience writing snowflake user-defined functions, I think I am messing up syntax somewhere (could be the way I am passing those two parameters). Comments/suggestions are most welcome.
Thanks in advance.

Answer 1

It looks like SFAAP is your database name, please include your schema name if you are going to use "Fully Qualified Names", or change your session context to use a database and schema and then create the function without the database and schema name.
example:
CREATE OR REPLACE FUNCTION SFAAP.WS_DIRBNK_DPST.INSERT_FI (