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The string from which to return the head portion. Its syntax can be C (fixed-length character string), UN (Unicode), V (variable-length character string), or W (double-byte character). An integer specifying the number of leading characters to return. Its data type is B (binary) with length 4.
• string is not modified.
• If length is less than or equal to 0, an empty string is returned.
• The following rule determines the first character of a string and prints both the character and the string to the message log:
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Copyright © TIBCO Software Inc. All Rights Reserved |