Firebird 2.1 Language Reference Update

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Firebird 2.1 Language Ref. Update sign .......................................................................................................................................... 188 sin ............................................................................................................................................ 189 sinh .......................................................................................................................................... 189 sqrt .......................................................................................................................................... 190 srand ........................................................................................................................................ 190 sright ...................................................................................................................................... 191 string2blob ............................................................................................................................ 191 strlen ...................................................................................................................................... 192 substr ...................................................................................................................................... 192 substrlen ................................................................................................................................ 193 tan ............................................................................................................................................ 194 tanh .......................................................................................................................................... 194 truncate, i64truncate ......................................................................................................... 195 Appendix A: Notes ............................................................................................................................. 197 Character set NONE data accepted “as is” .................................................................................... 197 Understanding the WITH LOCK clause ......................................................................................... 198 Syntax and behaviour ......................................................................................................... 198 How the engine deals with WITH LOCK .............................................................................. 199 The optional “OF ” sub-clause ................................................................. 200 Caveats using WITH LOCK ................................................................................................. 200 Examples using explicit locking .......................................................................................... 200 A note on CSTRING parameters .................................................................................................. 201 Passing NULL to UDFs in Firebird 2 ........................................................................................... 202 “Upgrading” ib_udf functions in an existing database ........................................................ 202 Maximum number of indices in different Firebird versions ........................................................... 203 Appendix B: Document History .......................................................................................................... 204 Appendix C: License notice ................................................................................................................ 209 x
List of Tables 4.1. Character sets new in Firebird ........................................................................................................ 11 4.2. Collations new in Firebird ............................................................................................................. 13 5.1. Specific collation attributes ............................................................................................................ 16 5.2. Maximum indexable (VAR)CHAR length ......................................................................................... 27 5.3. Max. indices per table, Firebird 2.0 ................................................................................................ 28 6.1. NULLs placement in ordered columns ............................................................................................. 79 10.1. Comparison of [NOT] DISTINCT to “=” and “” ........................................................................ 120 12.1. Possible CASTs .......................................................................................................................... 130 12.2. Types and ranges of EXTRACT results ........................................................................................ 138 12.3. Context variables in the SYSTEM namespace ............................................................................. 152 A.1. How TPB settings affect explicit locking ..................................................................................... 199 A.2. Max. indices per table in Firebird 1.0 – 2.0 .................................................................................. 203 xi
Page 1 and 2: Firebird 2.1 Language Reference Upd
Page 4 and 5: Table of Contents 1. Introduction .
Page 6 and 7: Firebird 2.1 Language Ref. Update F
Page 8 and 9: Firebird 2.1 Language Ref. Update A
Page 12 and 13: Chapter 1 Introduction Subject matt
Page 14 and 15: Chapter 2 Reserved words and keywor
Page 16 and 17: LOCK LOG LOG10 LPAD MATCHED MATCHIN
Page 18 and 19: Chapter 3 Available in: DSQL, PSQL
Page 20 and 21: Example: select name, age, case upp
Page 22 and 23: Data types and subtypes • Partial
Page 24 and 25: Added in: 1.0, 1.5, 1.5.1, 2.0, 2.1
Page 26 and 27: Chapter 5 DDL statements The statem
Page 28 and 29: With a special attribute (case-sens
Page 30 and 31: DIFFERENCE FILE parameter Added in:
Page 32 and 33: CREATE DOMAIN Available in: DSQL, E
Page 34 and 35: Example: DDL statements create exce
Page 36 and 37: Syntax: Example: ALTER EXTERNAL FUN
Page 38 and 39: DDL statements -- the following que
Page 40 and 41: DDL statements PROCEDURE A stored p
Page 42 and 43: DDL statements Description: Firebir
Page 44 and 45: DDL statements NOT NULL in variable
Page 46 and 47: CREATE GENERATOR Available in: DSQL
Page 48 and 49: Better alternative: DROP SEQUENCE D
Page 50 and 51: ) DDL statements lastname varchar(2
Page 52 and 53: USING INDEX subclause Available in:
Page 54 and 55: ALTER COLUMN: SET DEFAULT Available
Page 56 and 57: UNIQUE constraints now allow NULLs
Page 58 and 59: Example: DDL statements create trig
Page 60 and 61:
Multi-action triggers Added in: 1.5
Page 62 and 63:
NOT NULL in variable declarations C
Page 64 and 65:
DDL statements Restriction on recre
Page 66 and 67:
DDL statements got a chance to put
Page 68 and 69:
ORDER BY Available in: DSQL, PSQL A
Page 70 and 71:
DML statements ROWS can also be use
Page 72 and 73:
DML statements COLLATE in variable
Page 74 and 75:
The same call in ESQL (with obligat
Page 76 and 77:
DML statements Description: A SELEC
Page 78 and 79:
DML statements Aggregate functions
Page 80 and 81:
Syntax: Example: Notes: ::= DML
Page 82 and 83:
DML statements select d.dept_no, d.
Page 84 and 85:
DML statements FIRST and SKIP are b
Page 86 and 87:
DML statements select strlen(lastna
Page 88 and 89:
DML statements Description: A natur
Page 90 and 91:
DML statements • Only non-negativ
Page 92 and 93:
Example: DML statements plan (MyTab
Page 94 and 95:
UNIONs in subqueries Changed in: 2.
Page 96 and 97:
Restrictions DML statements • The
Page 98 and 99:
DML statements Description: Limits
Page 100 and 101:
Chapter 7 Available in: DSQL Added
Page 102 and 103:
Transaction control statements If t
Page 104 and 105:
Transaction control statements •
Page 106 and 107:
Chapter 8 PSQL statements PSQL - Pr
Page 108 and 109:
PSQL statements • If sql_datatype
Page 110 and 111:
Warning PSQL statements If you chan
Page 112 and 113:
PSQL statements exception ex_bad_ty
Page 114 and 115:
PSQL statements as declare variable
Page 116 and 117:
Examples: PSQL statements thoroughl
Page 118 and 119:
leave; end end c = 0; PSQL statemen
Page 120 and 121:
Chapter 9 Available in: DSQL, PSQL
Page 122 and 123:
Changed in: 2.0 Context variables D
Page 124 and 125:
Context variables its execution was
Page 126 and 127:
Context variables Description: OLD
Page 128 and 129:
Chapter 10 Changed in: 2.0 Operator
Page 130 and 131:
UNION as subselect Changed in: 2.0
Page 132 and 133:
Chapter 11 Aggregate functions Aggr
Page 134 and 135:
Chapter 12 Available in: DSQL, PSQL
Page 136 and 137:
• If the argument is NULL, NULL i
Page 138 and 139:
Result type: INTEGER or BIGINT Synt
Page 140 and 141:
Result type: INTEGER Syntax: BIT_LE
Page 142 and 143:
Internal functions This gives you c
Page 144 and 145:
Available in: DSQL, PSQL Added in:
Page 146 and 147:
Page 148 and 149:
Example: The equivalent CASE constr
Page 150 and 151:
WEEK Bug alert Internal functions M
Page 152 and 153:
Added in: 2.1 Internal functions De
Page 154 and 155:
Internal functions • If x is nega
Page 156 and 157:
Examples: Internal functions lpad (
Page 158 and 159:
Internal functions This will return
Page 160 and 161:
Internal functions overlay ('Goodby
Page 162 and 163:
Page 164 and 165:
Internal functions Description: Cre
Page 166 and 167:
Internal functions reverse ('Was it
Page 168 and 169:
Added in: 2.1 Internal functions De
Page 170 and 171:
Syntax: SINH (number) Important Int
Page 172 and 173:
Page 174 and 175:
Notes: Internal functions • If th
Page 176 and 177:
Description: Returns the arc cosine
Page 178 and 179:
Declaration: External functions (UD
Page 180 and 181:
Library: ib_udf Changed in: 1.0, 2.
Page 182 and 183:
Better alternative: Internal functi
Page 184 and 185:
External functions (UDFs) Descripti
Page 186 and 187:
Syntax: cot (angle) Declaration: Ex
Page 188 and 189:
Declaration: External functions (UD
Page 190 and 191:
Library: ib_udf Added in: IB Change
Page 192 and 193:
Changed in: 1.5, 1.5.2, 2.0 Better
Page 194 and 195:
External functions (UDFs) DECLARE E
Page 196 and 197:
See sright. Library: fbudf Added in
Page 198 and 199:
Notes: External functions (UDFs) Fo
Page 200 and 201:
Syntax: sign (number) Declaration:
Page 202 and 203:
Library: fbudf Added in: 1.0 (Win),
Page 204 and 205:
Notes: External functions (UDFs) th
Page 206 and 207:
Better alternative: Internal functi
Page 208 and 209:
Appendix A: Notes Character set NON
Page 210 and 211:
Table A.1. How TPB settings affect
Page 212 and 213:
Notes A note on CSTRING parameters
Page 214 and 215:
Notes Maximum number of indices in
Page 216 and 217:
Document History DDL statements ::
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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