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 LIKE Condition 

LIKE conditions are search conditions with a LIKE predicate, to 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) may not begin with the SQL syntax elements match_string or match_set.

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

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

 

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