Create Functions

This part of the tutorial shows how to create functions that are used to develop the stored procedures. This tutorial uses user-defined functions (UDFs). For related information, refer to CREATE FUNCTION (UDF).

Note

The SQL Editor only runs the queries that you select, so ensure you have them all selected before selecting Run.

Run the following SQL commands to create the user-defined functions (UDFs):

SQL

USE trades;

DELIMITER //

CREATE OR REPLACE FUNCTION marketcap_to_DECIMAL(s varchar(15) CHARACTER SET utf8 COLLATE utf8_general_ci NULL) RETURNS decimal(18,2) NULL AS
   DECLARE
     m CHAR(1) = SUBSTR(s, LENGTH(s), 1);
     raw_v DECIMAL(18,2) = SUBSTR(s, 2, LENGTH(s) - 1);
     v DECIMAL(18,2) = NULL;
   BEGIN
       IF m = "B" THEN
         v = raw_v * 1000;
       ELSE
         v = raw_v;
       END IF;
     RETURN v;
   END //

DELIMITER ;

Last modified: October 10, 2024

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Verification instructions

Note: You must install cosign to verify the authenticity of the SingleStore file.

Use the following steps to verify the authenticity of singlestoredb-server, singlestoredb-toolbox, singlestoredb-studio, and singlestore-client SingleStore files that have been downloaded.

You may perform the following steps on any computer that can run cosign, such as the main deployment host of the cluster.

(Optional) Run the following command to view the associated signature files.
Shell
```
curl undefined
```
Download the signature file from the SingleStore release server.
- Option 1: Click the Download Signature button next to the SingleStore file.
- Option 2: Copy and paste the following URL into the address bar of your browser and save the signature file.
- Option 3: Run the following command to download the signature file.
  Shell
```
curl -O undefined
```

After the signature file has been downloaded, run the following command to verify the authenticity of the SingleStore file.

Shell

echo -n undefined |
    cosign verify-blob --certificate-oidc-issuer https://oidc.eks.us-east-1.amazonaws.com/id/CCDCDBA1379A5596AB5B2E46DCA385BC \
      --certificate-identity https://kubernetes.io/namespaces/freya-production/serviceaccounts/job-worker \
      --bundle undefined \
      --new-bundle-format -

Verified OK