Системы обработки информации - язык баз данных SQL


Формат


<token> ::=

<nondelimiter token> | <delimiter token>

<nondelimiter token> ::=

<identifier>

| <key word>

| <numeric literal>

<identifier> ::=

<upper case letter>[{ [<underscore>]<letter or digit>}...]

<underscore> ::= _

<letter or digit> ::=

<upper case letter> | <digit>

<key word> ::=

ALL | AND | ANY | AS | ASC | AUTHORIZATION | AVG

| BEGIN | BETWEEN | BY

| CHAR | CHARACTER | CHECK | CLOSE | COBOL | COMMIT

| CONTINUE | COUNT | CREATE | CURRENT | CURSOR

| DEC | DECIMAL | DECLARE | DEFAULT | DELETE | DESC

| DISTINCT | DOUBLE

| END | ESCAPE | EXEC | EXISTS

| FETCH | FLOAT | FOR | FOREIGN | FORTRAN | FOUND

| FROM

| GO | GOTO | GRANT | GROUP | HAVING

| IN | INDICATOR | INSERT | INT | INTEGER | INTO | IS

| KEY | LANGUAGE | LIKE

| MAX | MIN | MODULE | NOT | NULL | NUMERIC

| OF | ON | OPEN | OPTION | OR | ORDER

| PASCAL | PL1 | PRECISION | PRIMARY | PRIVILEGES |

| PROCEDURE | PUBLIC

| REAL | REFERENCES | ROLLBACK

| SCHEMA | SECTION | SELECT | SET | SMALLINT | SOME

| SQL | SQLCODE | SQLERROR | SUM

| TABLE | TO | UNION | UNIQUE | UPDATE | USER

| VALUES | VIEW | WHENEVER | WHERE | WITH | WORK

<delimiter token> ::=

<character string literal>

|,|(|)|<|>|.|:|=|*|+|-|/|<>|>=|<=

<separator> ::=

{ <comment> | <space> | <newline> }...

<comment> ::=

<comment introduser> [<character>...] <newline>

<comment introduser> ::= См. Синтаксическое правило 5.

<newline> ::=

определенный в реализации индикатор конца строки

<space> ::=

символ пробела




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