Firebird 2.1 Language Reference Update

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Notes Maximum number of indices in different Firebird versions Between Firebird 1.0 and 2.0 there have been quite a few changes to the maximum number of indices per database table. The table below sums them all up. Table A.2. Max. indices per table in Firebird 1.0 – 2.0 Page size Firebird version(s) 1.0, 1.0.2 1.0.3 1.5.x 2.0.x 1 col 2 cols 3 cols 1 col 2 cols 3 cols 1 col 2 cols 3 cols 1 col 2 cols 3 cols 1024 62 50 41 62 50 41 62 50 41 50 35 27 2048 65 65 65 126 101 84 126 101 84 101 72 56 4096 65 65 65 254 203 169 254 203 169 203 145 113 8192 65 65 65 510 408 340 257 257 257 408 291 227 16384 65 65 65 1022 818 681 257 257 257 818 584 454 203
Appendix B: Document History The exact file history is recorded in the manual module in our CVS tree; see http://sourceforge.net/cvs/?group_ id=9028 Revision History 0.9 10 Jul 2009 PV First publication, based on the Firebird 2.0 Language Reference Update with almost all the changes for 2.1 added (roughly adding 50% to the size). 1.0 9 Dec 2010 PV GLOBAL: Renamed all “Deprecated in” section headers to “Better alternative”. This also required editing the text immediately following the header and in some cases additional text in the section (if the “deprecation” was discussed in the section body). Bookinfo: Added 2.1.4 to covered versions. Introduction :: Subject matter: Added “Aggregate functions” to first list. Introduction :: Versions covered: Added 2.1.4. Introduction :: Authorship: Edited first paragraph. Added Frank Ingermann and Vlad Khorsun to contributor list. Introduction: Removed sections Completeness and Miscellaneous notes. Data types and subtypes :: BLOB data type :: Text BLOB compatibility with VARCHAR: Replaced this subsection, which was incorrect, with Text BLOB support in functions and operators. Data types and subtypes :: BLOB data type :: Various enhancements: Added information on binary mnemonic (new in 2.0) + extra example. Data types and subtypes :: New collations :: A note on the UTF8 collations: Added information on UNICODE_CI. DDL statements :: COLLATION :: DROP COLLATION: Edited Description. DDL statements :: DATABASE :: CREATE DATABASE: Moved Syntax one level up and added DIFFERENCE FILE clause. Added new subsection DIFFERENCE FILE parameter. DDL statements :: DATABASE :: ALTER DATABASE: Merged difference file clauses onto one line in Syntax. DDL statements :: DOMAIN :: ALTER DOMAIN: Added Warning about changing domains referred in PSQL code. DDL statements :: FILTER :: DECLARE FILTER: Edited Description. Added user_defined to Syntax. Added more info under Syntax block and made it an itemizedlist. Converted Tip to formalpara User-defined mnemonics. DDL statements :: PROCEDURE :: CREATE PROCEDURE: Added NOT NULL to syntax block; added comment about character sets to syntax block. 204
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Firebird 2.1 Language Reference Upd
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Table of Contents 1. Introduction .
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Firebird 2.1 Language Ref. Update F
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Firebird 2.1 Language Ref. Update A
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Firebird 2.1 Language Ref. Update s
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Chapter 1 Introduction Subject matt
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Chapter 2 Reserved words and keywor
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LOCK LOG LOG10 LPAD MATCHED MATCHIN
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Chapter 3 Available in: DSQL, PSQL
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Example: select name, age, case upp
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Data types and subtypes • Partial
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Added in: 1.0, 1.5, 1.5.1, 2.0, 2.1
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Chapter 5 DDL statements The statem
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With a special attribute (case-sens
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DIFFERENCE FILE parameter Added in:
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CREATE DOMAIN Available in: DSQL, E
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Example: DDL statements create exce
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Syntax: Example: ALTER EXTERNAL FUN
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DDL statements -- the following que
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DDL statements PROCEDURE A stored p
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DDL statements Description: Firebir
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DDL statements NOT NULL in variable
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CREATE GENERATOR Available in: DSQL
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Better alternative: DROP SEQUENCE D
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) DDL statements lastname varchar(2
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USING INDEX subclause Available in:
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ALTER COLUMN: SET DEFAULT Available
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UNIQUE constraints now allow NULLs
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Example: DDL statements create trig
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Multi-action triggers Added in: 1.5
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NOT NULL in variable declarations C
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DDL statements Restriction on recre
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DDL statements got a chance to put
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ORDER BY Available in: DSQL, PSQL A
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DML statements ROWS can also be use
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DML statements COLLATE in variable
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The same call in ESQL (with obligat
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DML statements Description: A SELEC
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DML statements Aggregate functions
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Syntax: Example: Notes: ::= DML
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DML statements select d.dept_no, d.
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DML statements FIRST and SKIP are b
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DML statements select strlen(lastna
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DML statements Description: A natur
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DML statements • Only non-negativ
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Example: DML statements plan (MyTab
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UNIONs in subqueries Changed in: 2.
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Restrictions DML statements • The
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DML statements Description: Limits
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Chapter 7 Available in: DSQL Added
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Transaction control statements If t
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Transaction control statements •
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Chapter 8 PSQL statements PSQL - Pr
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PSQL statements • If sql_datatype
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Warning PSQL statements If you chan
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PSQL statements exception ex_bad_ty
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PSQL statements as declare variable
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Examples: PSQL statements thoroughl
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leave; end end c = 0; PSQL statemen
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Changed in: 2.0 Context variables D
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Context variables its execution was
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Context variables Description: OLD
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Chapter 10 Changed in: 2.0 Operator
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UNION as subselect Changed in: 2.0
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Chapter 11 Aggregate functions Aggr
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• If the argument is NULL, NULL i
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Result type: INTEGER or BIGINT Synt
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Result type: INTEGER Syntax: BIT_LE
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Internal functions This gives you c
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Available in: DSQL, PSQL Added in:
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Example: The equivalent CASE constr
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WEEK Bug alert Internal functions M
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Added in: 2.1 Internal functions De
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Internal functions • If x is nega
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Examples: Internal functions lpad (
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Internal functions This will return
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Internal functions overlay ('Goodby
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Page 188 and 189: Declaration: External functions (UD
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Page 212 and 213: Notes A note on CSTRING parameters
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Page 218 and 219: Document History Internal functions
Page 220: Appendix C: License notice The cont
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Firebird 2.1 Language Reference Update

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