Pattern matching en openSQL :
SELECT [...] WHERE field LIKE '_match%#%' ESCAPE '#'.
With '_' match any char, '%' match any string, even an empty one and ESCAPE to specify an escape char
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                http://help.sap.com/abapdocu_731/en/abenwhere_logexp_like.htm
  
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                http://help.sap.com/abapdocu_731/en/abenwhere_logexp_like.htm