Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)

2017-07-07 02:10:07

OLE DB Programmer's Reference

<value_expression> ::= <numeric_value_expression> | <string_value_expression> <numeric_value_expression> ::= <term> | <numeric_value_expression> {<plus> | <minus>} <term> <term> ::= <factor> | <term> {<asterisk> | <solidus>} <factor> <factor> ::= [<sign>] <numeric_primary> <sign> ::= + | - <plus> ::= + <minus> ::= - <asterisk>::= * <solidus> ::= / <numeric_primary> ::= <value_expression_primary> | <numeric_value_function> Note The data type of <value_expression_primary> in the above production must be numeric.

<value_expression_primary> ::= <unsigned_numeric_literal> | (<value_expression>) | <character_string_literal> | [<cube_name>.]<tuple>[.VALUE] | <property>[.VALUE] | <conditional_expression> <conditional_expression> ::= <if_expression> | <case_expression> <if_expression> ::= IIF(<search_condition>, <true_part>, <false_part>) <true_part> ::= <value_expression> <false_part> ::= <value_expression> <case_expression> ::= <simple_case> | <searched_case> | <coalesce_empty> <simple_case> ::= CASE <case_operand> <simple_when_clause>... [<else_clause>] END <searched_case> ::= CASE <searched_when_clause>... [<else_clause>] END <simple_when_clause> ::= WHEN <when_operand> THEN <result> <searched_when_clause> ::= WHEN <search_condition> THEN <result> <else_clause> ::= ELSE <value_expression> <case_operand> ::= <value_expression> <when_operand> ::= <value_expression> <result> ::= <value_expression> <coalesce_empty> ::= COALESCEEMPTY (<value_expression> , <value_expression> [, <value_expression> ]...) <unsigned_numeric_literal> ::= <exact_numeric_literal> | <approximate_numeric_literal> <exact_numeric_literal> ::= <unsigned_integer>[.<unsigned_integer>] | <unsigned_integer>. | .<unsigned_integer> <unsigned_integer> ::= {<digit>}... <approximate_numeric_literal> ::= <mantissa>E<exponent> <mantissa> ::= < exact_numeric_literal> <exponent> ::= [<sign>]<unsigned_integer> <string_value_expression> ::= <value_expression_primary> | <string_value_expression> <concatenation_operator> <value_expression_primary> Note The data type of <value_expression_primary> in the above production shall be a character string.

<character_string_literal>::= <quote>[<character_representation>...] <quote> <character_representation> ::= <nonquote_character> | <quote_symbol> <nonquote_character> ::= !! Any character in the character set other than <quote> <quote_symbol> ::= <quote> <quote> <quote> ::= ' <concatenation_operator> ::= ||

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