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The LEFT() function extracts a sub-string of a specified length from the beginning of a string.

LEFT(expression, length)


  • expression evaluates to the string from which the sub string is extracted.
  • length is the number of extracted characters if length is less than 1, LEFT() returns null.


The LEFT function is equivalent to sub-string extraction starting from the first character position, i.e. expression[1,length]

An example of use is as:

      STR_VAL =" Today's Brush is Tomorrows Forest.- Bemba Proverb"
      CRT LEFT(STR_VAL, 14)

to display:

Today's Brush
" Today's Brush is Tomorrows Forest.- Bemba Proverb"

to the screen. 

See also: RIGHT

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