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Background documentation LIKE Condition Locate the document in the library structure

LIKE conditions are search conditions with a LIKE predicate, for which the following applies:

·        The operator is the operator LIKE.

·        LIKE conditions have the following format:
<column_spec> LIKE <extended_value_spec>

·        The value specification used (extended_value_spec) must not begin with the match_string or match_set SQL syntax elements of a LIKE predicate.

To determine an optimal search strategy, Optimizer can only use LIKE conditions that satisfy these prerequisites.

Conditions with a format ...NOT (<column_spec> NOT LIKE <extended_value_spec>) are, where possible, converted into an <column_spec> LIKE <extended_value_spec> expression. Optimizer then continues to process this modified condition.

 

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