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expressional
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The answer EXPRESSIONAL has 0 possible clue(s) in existing crosswords.
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| Possible Dictionary Clues |
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| Of or pertaining to expression, either in language, the face or the arts |
| Expressional might refer to |
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An expression index, also known as a function based index, is a database index that is built on a generic expression, rather than one or more columns. This allows indexes to be defined for common query conditions that depend on data in a table, but are not actually stored in that table. * A common use for an expression index is to support case-insensitive searching or constraints. For example, if a web site wants to make user names case-insensitive, but still preserve the case as originally entered by the user, an index can be created on the lower-case representation of the user name:* CREATE INDEX users__last_name_lower ON users( lower( last_name ) );That will create a unique index on "lower(last_name)". Any queries that search on "lower(last_name)" could then make use of that index: * * SELECT user_id FROM users WHERE lower( last_name ) = lower( 'Smith' ); |