Pipeline expression operators perform the various operations needed at any given pipeline stage you have defined. The two most widely used operators fall into the date and string categories. Let's start with the string expression operators.
![country flag](/images/countries/us.png)
![country flag](/images/countries/gb.png)
![country flag](/images/countries/india.png)
![country flag](/images/countries/germany.png)
![country flag](/images/countries/france.png)
![country flag](/images/countries/canada.png)
![country flag](/images/countries/russia.png)
![country flag](/images/countries/spain.png)
![country flag](/images/countries/brazil.png)
![country flag](/images/countries/australia.png)
![country flag](/images/countries/singapore.png)
![country flag](/images/countries/hungary.png)
![country flag](/images/countries/ukraine.png)
![country flag](/images/countries/lux.png)
![country flag](/images/countries/estonia.png)
![country flag](/images/countries/lithuania.png)
![country flag](/images/countries/southkorea.png)
![country flag](/images/countries/turkey.png)
![country flag](/images/countries/switzerland.png)
![country flag](/images/countries/colombia.png)
![country flag](/images/countries/taiwan.png)
![country flag](/images/countries/chile.png)
![country flag](/images/countries/norway.png)
![country flag](/images/countries/ecuador.png)
![country flag](/images/countries/indonesia.png)
![country flag](/images/countries/newzealand.png)
![country flag](/images/countries/cyprus.png)
![country flag](/images/countries/denmark.png)
![country flag](/images/countries/finland.png)
![country flag](/images/countries/poland.png)
![country flag](/images/countries/malta.png)
![country flag](/images/countries/czech.png)
![country flag](/images/countries/austria.png)
![country flag](/images/countries/sweden.png)
![country flag](/images/countries/italy.png)
![country flag](/images/countries/egypt.png)
![country flag](/images/countries/belgium.png)
![country flag](/images/countries/portugal.png)
![country flag](/images/countries/slovenia.png)
![country flag](/images/countries/ireland.png)
![country flag](/images/countries/romania.png)
![country flag](/images/countries/greece.png)
![country flag](/images/countries/argentina.png)
![country flag](/images/countries/netherlands.png)
![country flag](https://cdn.packtpub.com/flag/004da5c4-583f-4e69-a0a8-0e999f350f90_128px-Flag_of_Bulgaria.png)
![country flag](/images/countries/latvia.png)
![country flag](/images/countries/southafrica.png)
![country flag](/images/countries/malaysia.png)
![country flag](/images/countries/japan.png)
![country flag](/images/countries/slovakia.png)
![country flag](/images/countries/philippines.png)
![country flag](/images/countries/mexico.png)
![country flag](/images/countries/thailand.png)
Pipeline expression operators perform the various operations needed at any given pipeline stage you have defined. The two most widely used operators fall into the date and string categories. Let's start with the string expression operators.