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Hitachi Advanced Database SQL Reference


7.6.1 Specification format for WHERE clauses

The WHERE clause specifies search conditions.

Organization of this subsection

(1) Specification format

WHERE-clause ::= WHERE search-condition

(2) Explanation of specification format

search-condition:

For details about search conditions, see 7.18 Search conditions.

(3) Example

The following example illustrates the WHERE clause.

Example

From the sales history table (SALESLIST), this example retrieves the customer ID (USERID), product code (PUR-CODE), and date of purchase (PUR-DATE) for customers who purchased product code P002 on or after September 6, 2011.

SELECT "USERID","PUR-CODE","PUR-DATE"
    FROM "SALESLIST"
        WHERE "PUR-DATE">=DATE'2011-09-06'
        AND "PUR-CODE"='P002'

The underlined portion indicates the WHERE clause.