Firebird Generator Guide A guide on how and when to use generators in Firebird Frank Ingermann Version 0.3, 27 June 2020 Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2. Use of generator statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.3. Can you re-use generator values?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

became clear that the open source, non-commercial Firebird community would never be granted right of use. The two important books from the InterBase 6 published set were the Data Definition Guide and the floating point value. ◦ The BIGINT (64-bit integer) data type is not supported. ◦ Identifiers are case-insensitive and must always comply with the rules for regular identifiers — see the section Identifiers Double quotes are reserved for delimiting non-regular identifiers, enabling object names that are case-sensitive or that do not meet the requirements for regular identifiers in other ways. ◦ All strings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493 8.12.4. RDB$ROLE_IN_USE() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . floating point value. ◦ The BIGINT (64-bit integer) data type is not supported. ◦ Identifiers are case-insensitive and must always comply with the rules for regular identifiers — see the section Identifiers Double quotes are reserved for delimiting non-regular identifiers, enabling object names that are case-sensitive or that do not meet the requirements for regular identifiers in other ways. ◦ All strings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9.2. CASE expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2. Testing for NULL If you want to know whether a variable, field or other expression is NULL, use the following syntax: IS [NOT] NULL Examples: if ( MyField is null ) then YourString Total = A + B + C where A + B + C is not null delete from Phonebook where PhoneNum is null Do not use “… = NULL” to test for nullness. This syntax is illegal in Firebird versions up to 1.5.n, and gives

org/en/documentation/. Some warnings before you start • Firebird 2.0.2 was recalled due to a regression; if you use it, upgrade to 2.0.3 or higher ASAP and make sure to read your new version's Release Notes. • If you open-source database management system, but “free” does not mean that everything is per- mitted. The use of Firebird is governed by two licenses: the IPL (InterBase Public License) and the IDPL (Initial Developer's improvements made by the Firebird Project. Both licenses offer similar rights and restrictions. In short: • Use of the software is free, even for commercial purposes. You may also redistribute the software, separately

open-source database management system, but “free” does not mean that everything is permitted. The use of Firebird is governed by two licenses: the IPL (InterBase Public License) and the IDPL (Initial improvements made by the Firebird Project. Both licenses offer similar rights and restrictions. In short: • Use of the software is free, even for commercial purposes. You may also redistribute the software, separately Firebird 4 security database, it is also possible to copy the security4.fdb to security5.fdb and use gfix -upgrade to upgrade from ODS 13.0 to ODS 13.1, but we recommend using the backup and restore

.............................................................................................. 66 CASE ................................................................................................. например DATE '25.12.2016' Условные выражения Выражение CASE и встроенные функции COALESCE, NULLIF. Круглые скобки Пара скобок ( ... ) используются для группировки условное выражение CASE. Остальные условные выражения являются производными встроенными функциями и описаны в разделе Скалярные функции. CASE Доступно в: DSQL, ESQL. Оператор CASE возвращает только

and Linux. Creates a process for each client connec- tion, each with its own cache. Less re- source use if the number of connections is low. Single server process with a separate thread for each connection severe bug. (Note: in Firebird 1.5 this is no longer the case.) Server can run as non-root user, e.g. firebird. This limits the damage in case of malfunctioning (by hack or otherwise). No Services Manager perform these tasks remotely. SMP (symmetrical multi-processor) sup- port. Better performance in case of a small number of multiple connections that do not influence each other. No SMP support. On multi-processor

provides reference material for the Firebird Interactive SQL Utility (isql), and instructions on how to use it to perform tasks within the database.  This manual is a work in progress. It is subject to change database functions.  Because other applications in the Linux environment, for example, MySQL, also use isql as a utility name, you are advised to run the Firebird utility from its own directory, or provide isql Use CONNECT or CREATE DATABASE to specify a database SQL> CONNECT "C:\DATABASES\FIREBIRD\MY_EMPLOYEE.FDB" CON> user 'SYSDBA' password 'secret';  Here and elsewhere in this document, we use the ‘$’

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.5. Use of 'stdin' or 'stdout' File Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . practical use and is not normally used in practice. -U[SER] Allows the username of the SYSDBA or database owner user to be specified if the database is to be backed up, or, in the case of a restore from the above that a valid username and password must be defined on the command line, or by the use of environment variables ISC_USER and ISC_PASSWORD. This version of the command will exit with a error