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01-documentation
01-01-developer-studio
01-02-server-tools
01-03-faqs
01-04-firebird4
01-05-database-technology
01-06-white-papers
01-07-lazarus-documentation
01-08-firebird-documentation
01-09-sql-language-references
firebird2.0-language-reference
context-variables
ddl-statement
dml-statements
external-functions
internal-functions
big_length
cast
char_length-character_length
coalesce
extract
gen_id
iif
lower
nullif
octet_length
rdb_get_context
rdb_set_context
substring
trim
upper
operators-and-predicates
psql-statements
transaction-control-statements
appendix-a-notes
appendix-b-document-history
appendix-c-license-notice
data-types-and-subtypes
introduction
miscellaneous-language-elements
reserved-words-and-keywords
firebird2.1-language-reference
firebird2.5-language-reference-update
language-reference
interbase6.0-dsql-syntax
01-10-firebird-command-line-utilities
01-12-firebird_interbase-character-sets
01-13-miscellaneous
01-11-interbase-documentation
01-firebird
02-ibexpert
03-ibexpert-ibeblock
04-ibexpert-udf-functions
05-ibexpert-ibeblock-functions
06-ibexpert-ibeblock-examples
07-procedural-extensions-of-ibeblock
1.1
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Internal Functions
BIT_LENGTH()
CAST()
CHAR_LENGTH(), CHARACTER_LENGTH()
COALESCE()
EXTRACT()
GEN_ID()
IIF()
LOWER()
NULLIF()
OCTET_LENGTH()
RDB$GET_CONTEXT()
RDB$SET_CONTEXT()
SUBSTRING()
TRIM()
UPPER()