.............................................................................. 680 RDB$SECURITY_CLASSES ................................................................................................ SIMILAR TO 'Grap[abc^xyz]fruit' -- FALSE 'Grapefruit' SIMILAR TO 'Grap[abc^de]fruit' -- FALSE 'Grapefruit' SIMILAR TO 'Grap[abe^de]fruit' -- FALSE '3' SIMILAR TO '[[:DIGIT:]^4-8]' -- TRUE '6' SIMILAR TO '[[:DIGIT:]^4-8]' Запрос с двумя подзапросами: SELECT p.fullname, (SELECT name FROM classes c WHERE c.id = p.class) AS class, (SELECT name FROM mentors m WHERE m.id = p.mentor) AS

@enduml 3.16 Remove classes You can also use the remove commands to remove classes. This may be useful if you define a large !included file, and if you want to remove some classes after file inclusion or Remove unlinked class By default, all classes are displayed: @startuml class C1 class C2 class C3 C1 -- C2 @enduml But you can: • hide @unlinked classes: @startuml class C1 class C2 class C3 C1 C1 -- C2 hide @unlinked @enduml • or remove @unlinked classes: @startuml class C1 class C2 class C3 C1 -- C2 remove @unlinked @enduml Справочное руководство по языку PlantUML (1.2021.2) 63 / 387 3

@enduml 3.16 Remove classes You can also use the remove commands to remove classes. This may be useful if you define a large !included file, and if you want to remove some classes after file inclusion or Remove unlinked class By default, all classes are displayed: @startuml class C1 class C2 class C3 C1 -- C2 @enduml But you can: • hide @unlinked classes: @startuml class C1 class C2 class C3 C1 C1 -- C2 hide @unlinked @enduml • or remove @unlinked classes: @startuml class C1 class C2 class C3 C1 -- C2 remove @unlinked @enduml Справочное руководство по языку PlantUML (1.2021.1) 63 / 382 3

@enduml 3.16 Remove classes You can also use the remove commands to remove classes. This may be useful if you define a large !included file, and if you want to remove some classes after file inclusion or Remove unlinked class By default, all classes are displayed: @startuml class C1 class C2 class C3 C1 -- C2 @enduml But you can: • hide @unlinked classes: @startuml class C1 class C2 class C3 C1 C1 -- C2 hide @unlinked @enduml • or remove @unlinked classes: @startuml class C1 class C2 class C3 C1 -- C2 remove @unlinked @enduml Справочное руководство по языку PlantUML (1.2021.2) 64 / 405 3

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can %strlen("foo") 3 in the example %substr Extract a substring. Takes 2 or 3 arguments| %substr("abcdef", 3, 2) "de" in the example %strpos Search a substring in a string %strpos("abcdef", "ef") 4 (position of ef) You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can %strlen("foo") 3 in the example %substr Extract a substring. Takes 2 or 3 arguments| %substr("abcdef", 3, 2) "de" in the example %strpos Search a substring in a string %strpos("abcdef", "ef") 4 (position of ef) You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can "ef") 4 (position of ef) %substr Extract a substring. Takes 2 or 3 arguments %substr("abcdef", 3, 2) "de" in the example %true Return always true %true() true %upper Return an uppercase string %upper("Hello") You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can "ef") 4 (position of ef) %substr Extract a substring. Takes 2 or 3 arguments %substr("abcdef", 3, 2) "de" in the example %true Return always true %true() true %upper Return an uppercase string %upper("Hello") You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example other elements you may get a syntax error if, for example, trying to add a rectangle along with classes. In those cases, add { and } after the macro to create the empty rectangle. Example of usage: @startuml

классов Sometimes, the default layout is not perfect... You can use together keyword to group some classes together : the layout engine will try to group them (as if they were in the same package). You can You may also include the common.puml file, eg: !include , which contains helper macros de- fined. With the common.puml imported, you can use the NAME_OF_SPRITE(parameters...) macro. Example other elements you may get a syntax error if, for example, trying to add a rectangle along with classes. In those cases, add { and } after the macro to create the empty rectangle. Example of usage: @startuml