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Elements Used in SQL Statements

  • Άρθρο

The following elements are used in the SQL statements listed previously.

Element

base-table-identifier ::= user-defined-name

base-table-name ::= base-table-identifier

boolean-factor ::= [NOT] boolean-primary

boolean-primary ::= comparison-predicate | ( search-condition )

boolean-term ::= boolean-factor [AND boolean-term]

character-string-literal ::= ''{character}...'' (character is any character in the character set of the driver/data source. To include a single literal quote character ('') in a character-string-literal, use two literal quote characters [''''].)

column-identifier ::= user-defined-name

column-name ::= [table-name.]column-identifier

comparison-operator ::= < | > | <= | >= | = | <>

comparison-predicate ::= expression comparison-operator expression

data-type ::= character-string-type (character-string-type is any data type for which the ""DATA_TYPE"" column in the result set returned by SQLGetTypeInfo is either SQL_CHAR or SQL_VARCHAR.)

digit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

dynamic-parameter ::= ?

expression ::= term | expression {+|-} term

factor ::= [+|-]primary

insert-value ::=

dynamic-parameter

| literal

| NULL

| USER

letter ::= lower-case-letter | upper-case-letter

literal ::= character-string-literal

lower-case-letter ::= a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z

order-by-clause ::= ORDER BY sort-specification [, sort-specification]...

primary ::= column-name

| dynamic-parameter

| literal

| ( expression )

search-condition ::= boolean-term [OR search-condition]

select-list ::= * | select-sublist [, select-sublist]... (select-list cannot contain parameters.)

select-sublist ::= expression

sort-specification ::= {unsigned-integer | column-name} [ASC | DESC]

table-identifier ::= user-defined-name

table-name ::= table-identifier

table-reference ::= table-name

table-reference-list ::= table-reference [,table-reference]...

term ::= factor | term {*|/} factor

unsigned-integer ::= {digit}

upper-case-letter ::= A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

user-defined-name ::= letter[digit | letter | _]...