Add position() string function to PPL

[margarit-h]

• Add position() string function to PPL

Signed-off-by: Margarit Hakobyan [email protected]

Description

Usage: The syntax POSITION(substr IN str) returns the position of the first occurrence of substring substr in string str. Returns 0 if substr is not in str. Returns NULL if any argument is NULL.

Argument type: STRING, STRING

Return type INTEGER:

(STRING IN STRING) -> INTEGER

Example::

os> source=people | eval `POSITION('world' IN 'helloworld')` = POSITION('world' IN 'helloworld'), `POSITION('invalid' IN 'helloworld')`= POSITION('invalid' IN 'helloworld')  | fields `POSITION('world' IN 'helloworld')`, `POSITION('invalid' IN 'helloworld')`
fetched rows / total rows = 1/1
+-------------------------------------+---------------------------------------+
| POSITION('world' IN 'helloworld')   | POSITION('invalid' IN 'helloworld')   |
|-------------------------------------+---------------------------------------|
| 6                                   | 0                                     |
+-------------------------------------+---------------------------------------+

Issues Resolved

#1106

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov-commenter]

Codecov Report

Merging #1147 (72b75aa) into 2.x (354e843) will decrease coverage by 2.49%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                2.x    #1147      +/-   ##
============================================
- Coverage     98.31%   95.81%   -2.50%     
- Complexity     3485     3486       +1     
============================================
  Files           348      358      +10     
  Lines          8707     9369     +662     
  Branches        555      674     +119     
============================================
+ Hits           8560     8977     +417     
- Misses          142      334     +192     
- Partials          5       58      +53     

Flag	Coverage Δ
query-workbench	62.76% <ø> (?)
sql-engine	98.31% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...pensearch/sql/ppl/parser/AstExpressionBuilder.java	100.00% <100.00%> (ø)
workbench/public/components/Header/Header.tsx	100.00% <0.00%> (ø)
workbench/public/application.tsx	0.00% <0.00%> (ø)
...ublic/components/QueryResults/QueryResultsBody.tsx	68.32% <0.00%> (ø)
...h/public/components/QueryLanguageSwitch/Switch.tsx	85.71% <0.00%> (ø)
workbench/public/components/Main/main.tsx	53.00% <0.00%> (ø)
...ch/public/components/QueryResults/QueryResults.tsx	61.60% <0.00%> (ø)
workbench/public/components/SQLPage/SQLPage.tsx	100.00% <0.00%> (ø)
workbench/public/components/app.tsx	0.00% <0.00%> (ø)
workbench/public/components/PPLPage/PPLPage.tsx	56.52% <0.00%> (ø)
... and 1 more

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[dai-chen]

Thanks for the changes!