SUBSTRING_INDEX

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Extracts the portion of a string up to the given number of occurrences of a delimiter.

This is mainly useful for delimited strings, such as a CSV or ASCII table. If the count argument is negative, the delimiters will be counted starting from the right, and the portion of the string to the right of the final delimiter will be returned.

Syntax

SQL

SUBSTRING_INDEX(str, delimiter, count)

Arguments

str: any string or binary object
delimiter: the field delimiter
count: the number of fields to extract

Return Type

String

Examples

SQL

SELECT SUBSTRING_INDEX('a b c d', ' ', 3);

+------------------------------------+
| SUBSTRING_INDEX('a b c d', ' ', 3) |
+------------------------------------+
| a b c                              |
+------------------------------------+

SQL

SELECT SUBSTRING_INDEX('de305d54-75b4-431b-adb2-eb613', '-', 2) as uuid;

+---------------+
| uuid          |
+---------------+
| de305d54-75b4 |
+---------------+

SQL

SELECT SUBSTRING_INDEX('01-23-45-67-89', '-', -2);

+--------------------------------------------+
| SUBSTRING_INDEX('01-23-45-67-89', '-', -2) |
+--------------------------------------------+
| 67-89                                      |
+--------------------------------------------+

SUBSTRING

Last modified: February 27, 2023

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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