. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 5. Data Definition (DDL) Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357 7.7.3. DECLARE VARIABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . characters (252 bytes). Two types of names are valid as identifiers: regular names, similar to variable names in regular programming languages, and delimited names that are specific to SQL. To be valid

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 5. Data Definition (DDL) Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 7.6.3. DECLARE VARIABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . important books from the InterBase 6 published set were the Data Definition Guide and the Language Reference. The former covered the data definition language (DDL) subset of the SQL language, while the latter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344 7.7.2. DECLARE VARIABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . oder deklariert wurden. Begrenzte Bezeichner werden immer nach der genauen Schreibweise ihrer Definition oder Deklaration gespeichert. Somit unterscheidet sich "FullName" (quoted) von FullName (unquoted 2 3 6. PSQL-Deklaration mit Startwert DECLARE VARIABLE VAR1 BOOLEAN = TRUE; 7. Gültige Syntax, aber wie bei einem Vergleich mit NULL, wird nie ein Datensatz

yet its workings shouldn’t be hard to understand as long as you stick to the following simple definition: NULL means unknown. Let me repeat that: NULL means UNKNOWN Keep this line in mind as you read unknown”, it is the logical default state for any field or variable that has been created but not provided with a value: • If you declare a variable in a stored procedure or trigger, its value is undefined 2.1. Disallowing NULL In a column or domain definition, you can specify that only non-NULL values may be entered by adding NOT NULL to the definition: create table MyTable ( i int not null ) create

Блок BEGIN ... END может быть пустым BREAK CLOSE CURSOR DECLARE DECLARE ... CURSOR DECLARE [VARIABLE] с инициализацией DECLARE с DOMAIN вместо типа данных TYPE OF COLUMN в объявлении переменных и следующие области: • Зарезервированные слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language - язык создания данных); • Операторы DML (Data Manipulation Language - язык обращения они не создают индексы. Синтаксис: [CONSTRAINT constraint-name] definition> [USING [ASC[ENDING] | DESC[ENDING]] INDEX index_name] Пример: В первом примере создаётся

in the ISC_USER and ISC_PASSWORD environment variables are used instead. There is no environment variable to preset the required role. It is possible to connect to a database using isql in two ways: locally Firebird client library in use (fbclient.dll /libfbclient.so). The service refers to a service definition in the services file of your operating system (Windows: %WINDIR%\System32\drivers\etc\services and maintained using data definition scripts. Chapter 9. Creating A Database 18 Chapter 10. Setting The ISC_USER And ISC_PASSWORD Environment Variables An environment variable is a named object that contains

.................................. 346 Руководство по языку SQL СУБД Firebird 3.0 13 DECLARE VARIABLE ............................................................................................ 346 положения; • Зарезервированные и ключевые слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language — язык создания данных); • Операторы DML (Data Manipulation Language — язык обращения использующего строковые литералы. EXECUTE BLOCK RETURNS ( RDB$TRIGGER_NAME CHAR(31) ) AS DECLARE VARIABLE S VARCHAR(8191); BEGIN S = 'SELECT RDB$TRIGGER_NAME FROM RDB$TRIGGERS WHERE RDB$RELATION_NAME

are made through a secure tunnel, a specific events port has to be as- signed to the RemoteAuxPort variable in firebird.conf, and the firewall or tun- nel configured accordingly. As you can see, neither /opt/firebird directory. If you place it somewhere else, create a system-wide permanent FIREBIRD environment variable pointing to the right directory, so that the API routines can locate the messages. 4. Optionally isql you can query data, get information about the metadata, create database objects, run data definition scripts and much more. To get back to the command prompt, type: SQL>QUIT;# You can also type

list does not match MATCHING clause -313 335544669 dsql_count_mismatch Count of column list and variable list do not match -314 335544565 transliteration_failed Cannot transliterate character between already in use -616 335544530 primary_key_ref Cannot delete PRIMARY KEY being used in FOREIGN KEY definition. -616 335544539 integ_index_del Cannot delete index used by an Integrity Constraint -616 335544540 Validation error for column @1, value "@2" -625 335544879 not_valid_for_var Validation error for variable @1, value "@2" -625 335544880 not_valid_for Validation error for @1, value "@2" -637 335544664

constraint %s on view or table %s -313 335544669 dsql_count_mismatch Count of column list and variable list do not match -314 335544565 transliteration_failed Cannot transliterate character between already in use -616 335544530 primary_key_ref Cannot delete PRIMARY KEY being used in FOREIGN KEY definition. -616 335544539 integ_index_del Cannot delete index used by an Integrity Constraint -616 335544540 dsql_domain_not_found Specified domain or source column %s does not exist -901 335544656 dsql_var_conflict Variable %s conflicts with parameter in same procedure -901 335544666 srvr_version_too_old Server version