Oracle APEX Cheat Sheet

Dimitri Gielis
Oracle APEX
Cheat Sheet
www.apexRnD.be
dgielis.blogspot.com
@dgielis
dgielis@apexRnD.be

Dimitri Gielis
❖ Founder & CEO of APEX R&D
❖ 20+ years of Oracle Experience  
(OCP & APEX Certiﬁed)
❖ Oracle ACE Director
❖ “APEX Developer of the year 2009” by Oracle Magazine
❖ “Oracle Developer Choice award (ORDS)” in 2015
❖ Author Expert Oracle APEX
❖ Presenter at Conferences

www.apexofﬁceprint.comwww.apexRnD.be

http://dgielis.blogspot.com @dgielis

Agenda
❖ Things I always have to look up in following domains:
❖ Database
❖ SQL
❖ PL/SQL
❖ APEX

Get (comma) delimited string
https://docs.oracle.com/cloud/latest/db112/SQLRF/functions089.htm#SQLRF30030

Oracle SQL Function Cheat Sheet
http://www.databasestar.com/oracle-sql-functions
Aggregate Functions
AVG ( [DISTINCT|ALL] expression ) [OVER (
analytic_clause )]
COUNT ( [ * | [ DISTINCT | ALL ] expression) [OVER
(analytic_clause)]
MAX ( [DISTINCT|ALL] expression ) [OVER
(analytic_clause)]
MIN ( [DISTINCT|ALL] expression ) [OVER (
analytic_clause )]
SUM ( [DISTINCT|ALL] expression ) [OVER
(analytic_clause)]
Conversion Functions
BIN_TO_NUM ( expression_list )
CAST ( expression AS type_name )
CAST ( MULTISET (subquery) AS type_name )
COALESCE ( expr1, expr2, [expr…] )
CHARTOROWID ( input_char )
FROM_TZ ( timestamp_value, timezone_value )
HEXTORAW ( charvalue )
NUMTODSINTERVAL ( number, interval_unit )
NUMTOYMINTERVAL ( number, interval_unit )
RAWTOHEX ( charvalue )
RAWTONHEX ( raw )
ROWIDTOCHAR ( rowid )
ROWIDTONCHAR ( rowid )
SCN_TO_TIMESTAMP ( number )
TIMESTAMP_TO_SCN ( timestamp )
TO_BINARY_DOUBLE ( expression [, format [,
nlsparam ] ] )
TO_CHAR( input_value, [format_mask],
[nls_parameter] )
TO_CLOB ( input_string )
TO_DATE( charvalue, [format_mask],
[nls_date_language] )
TO_DSINTERVAL ( input_string [, nlsparam] )
TO_LOB ( long_value )
TO_MULTI_BYTE ( string )
TO_NCHAR ( input_string )
TO_NCHAR ( input_datetime [, format [,nlsparam ] ] )
TO_NCHAR ( number [, format [, nlsparam ] ] )
TO_NCLOB ( lob_value )
TO_NUMBER ( input_value, [format_mask],
[nls_parameter] )
TO_SINGLE_BYTE ( input_string )
TO_TIMESTAMP ( input_string, [format_mask],
[‘nlsparam’] )
TO_TIMESTAMP_TZ ( input_string [, format_mask] [,
nls_param] )
TO_YMINTERVAL ( input_string )
UNISTR ( string )
Date and Time Functions
ADD_MONTHS ( input_date, number_months )
CURRENT_DATE
CURRENT_TIMESTAMP ( [precision] )
DBTIMEZONE
LAST_DAY ( input_date )
LOCALTIMESTAMP ( timestamp_precision )
MONTHS_BETWEEN ( date1, date2 )
NEW_TIME ( input_date, timezone1, timezone2 )
NEXT_DAY ( input_date, weekday )
SESSIONTIMEZONE
SYS_EXTRACT_UTC (
datetime_with_timezone_value )
SYSDATE
SYSTIMESTAMP
TZ_OFFSET ( timezone_name | time_value |
SESSIONTIMEZONE | DBTIMEZONE )
Environment Functions
CON_DBID_TO_ID ( container_dbid )
CON_GUID_TO_ID ( container_guid )
CON_NAME_TO_ID ( container_name )
CON_UID_TO_ID ( container_uid )
ORA_INVOKING_USER
ORA_INVOKING_USERID ( )
SYS_CONTEXT (namespace, parameter [, length] )
SYS_GUID()
SYS_TYPEID ( object_type_value )
UID
USER
USERENV ( parameter )
SQLCODE
SQLERRM ( error_number )
NLS Functions
NLS_CHARSET_DECL_LEN ( byte_count,
char_set_id )
NLS_CHARSET_ID ( string_value )
NLS_CHARSET_NAME ( number )
Numeric and Maths Functions
ABS ( number )
ACOS ( number )
ASIN ( number )
ATAN2 ( number1 [/|,] number2 )
BITAND ( expr1, expr2 )
CEIL ( input_val )
CORR ( expression1, expression2 )
COS ( number )
COSH (number)
COVAR_POP ( expression1, expression2 ) [OVER
(analytic_clause)]
COVAR_SAMP ( expression1, expression2 ) [OVER
(analytic_clause)]
CUME_DIST (expression1, … expression_n) WITHIN
GROUP (ORDER BY expression_order1, …
expression_order_n)
CUME_DIST() OVER ( [query_partition_clause]
ORDER BY order_clause )
DENSE_RANK ( expr, [expr(n)] ) WITHIN GROUP (
ORDER BY (order_expr [ASC|DESC] [NULLS
FIRST|LAST] )
DENSE_RANK() OVER ( [query_partition_clause]
order_by_clause)
EXP ( number )
EXTRACT ( date_component FROM expression )
FLOOR ( input_number )
GREATEST ( expr1, [expr_n] )
LEAST ( expr1, [expr_n] )
LN ( number )
LOG ( [base, ] expression )
MEDIAN ( expr ) [OVER (query_partition_clause)]
MOD ( numerator, denominator )
ORA_HASH ( expression [, max_bucket [,
seed_value ] ] )
PERCENT_RANK ( expression ) WITHIN GROUP (
ORDER BY (expression_n [. DESC | ASC ] [NULLS
FIRST|LAST] )
PERCENT_RANK () OVER ( [query_partition_clause]
order_by_clause )
PERCENTILE_CONT ( expression) WITHIN GROUP
( ORDER BY expression [ ASC | DESC ] [OVER (
query_partition_clause )
PERCENTILE_DISC ( expression) WITHIN GROUP (
ORDER BY expression [ ASC | DESC ] [OVER (
POWER ( n2, n1 )
RANK ( expr ) WITHIN GROUP ( ORDER BY (
order_expr [NULLS FIRST/LAST] ) )
RANK () OVER ( [query_partition_clause]
order_by_clause )
REMAINDER ( n2, n1 )
ROUND ( input, roundto )
ROWNUM
ROW_NUMBER () OVER ( [ query_partition_clause]
order_by_clause )
SIGN ( number )
SIN ( number )
SINH ( number )
SQRT ( number )
STANDARD_HASH ( expression [, method ] )
STDDEV ( [DISTINCT | ALL] expression ) [OVER
(analytical_clause) ]
STDDEV_POP ( expression) [ OVER (
analytic_clause ) ]
STDDEV_SAMP ( expression) [ OVER (
analytic_clause ) ]
TAN ( number )
TANH ( number )
TRUNC ( date, fmt )
TRUNC ( number, decimals )
VAR_POP ( expression) [OVER ( analytic_clause )]
VAR_SAMP ( expression) [OVER ( analytic_clause )]
VARIANCE ( [ DISTINCT | ALL ] expression) [ OVER
( analytic_clause ) ]
WIDTH_BUCKET ( expression, min_value,
max_value, num_buckets )
String and Character Functions
ASCII ( charvalue )
ASCIISTR ( charvalue )
CHR ( number_code [USING NCHAR_CS] )
COMPOSE ( input_value )
CONCAT( string1, string2 )
CONVERT ( input_char, dest_char_set,
[source_char_set] )
DECODE ( expression, search, result [, search,
result]… [,default] )
DECOMPOSE ( input_string
[CANONICAL|COMPATIBILITY] )
DUMP ( expression [, return_format] [, start_position]
[, length] )
INITCAP ( input_string )
INSTR ( string, substring, [start_position],
[occurrence] )
INSTR2 ( string, substring, [start_position],
[occurrence] )
[occurrence] )
INSTRB ( string, substring, [start_position],
[occurrence] )
INSTRC ( string, substring, [start_position],
[occurrence] )
LISTAGG ( measure_expr [, delimiter]) WITHIN
GROUP (order_by_clause) [OVER
query_partition_clause]
LENGTH ( string_value )
LENGTH2 ( string_value )
LENGTHB ( string_value )
LENGTHC ( string_value )
LOWER ( input_string )
LPAD( expr, length [, pad_expr] )
LTRIM( input_string, [trim_string] )
LNNVL ( condition )
NCHR ( number_code )
NLS_INITCAP ( input_char [, nlsparam ] )
NLS_LOWER ( input_char [, nlsparam ] )
NLS_UPPER ( input_char [, nlsparam ] )
NLSSORT ( input_char [, nlsparam ] )
NANVL ( check_value, replace_value )
NVL ( check_value, replace_value )
NVL2 ( value_to_check, value_if_not_null,
value_if_null )
NULLIF ( expr1, expr2 )
REGEXP_COUNT ( source_char, pattern [, position [,
match_pattern [, subexpression ] ] ] )
REGEXP_INSTR ( source_char, pattern [, position [,
occurrence [, return_option [, match_pattern [,
subexpression ] ] ] ] ] )
REGEXP_REPLACE ( source_char, pattern [,
replace_string [, position [, occurrence [,
match_parameter ] ] ] ] )
REGEXP_SUBSTR ( source_char, pattern [, position
[, occurrence [, match_parameter ] ] ] ] )
REPLACE ( whole_string, string_to_replace,
[replacement_string])
RPAD ( expr, length [, pad_expr] )
RTRIM ( input_string, [trim_character])
SOUNDEX ( string )
SUBSTR ( string, start_position, [length] )
TRANSLATE ( source, from_string, to_string )
TRANSLATE ( charvalue USING
{CHAR_CS|NCHAR_CS} )
TREAT ( expression AS [ REF ] [ schema. ] type )
TRIM ( [ [ LEADING | TRAILING | BOTH ]
trim_character FROM ] trim_source )
UPPER ( input_string )
VSIZE ( expression )
Analytic Functions
FIRST_VALUE ( expression [ IGNORE NULLS ] )
OVER ( analytic_clause )
LAST_VALUE ( expression [ IGNORE NULLS ] )
OVER ( analytic_clause )
LAG ( expression [, offset [, default] ] ) OVER ( [
query_partition_clause ] order_by_clause )
LEAD ( expression [, offset [, default] ] ) OVER ( [
query_partition_clause ] order_by_clause )
NTILE ( expression ) OVER (
[query_partition_clause] order_by_clause )
RATIO_TO_REPORT( expression ) OVER (
[query_partition_clause] )
Other Functions
CASE [expression]
WHEN condition_1 THEN result_1
WHEN condition_n THEN result_n
ELSE result
END case_name
SYS_CONNECT_BY_PATH ( column,
character_separator )
Grouping Functions
GROUP_ID ( )
GROUPING ( expression )
GROUPING_ID ( expression1 [, expression_n ] )
Large Object Functions
BFILENAME ( directory, filename )
EMPTY_BLOB ()
EMPTY_CLOB ()

Oracle SQL Function Cheat Sheet
http://www.databasestar.com/oracle-sql-functions
Aggregate Functions
AVG ( [DISTINCT|ALL] expression ) [OVER (
analytic_clause )]
COUNT ( [ * | [ DISTINCT | ALL ] expression) [OVER
(analytic_clause)]
MAX ( [DISTINCT|ALL] expression ) [OVER
(analytic_clause)]
MIN ( [DISTINCT|ALL] expression ) [OVER (
analytic_clause )]
SUM ( [DISTINCT|ALL] expression ) [OVER
(analytic_clause)]
Conversion Functions
BIN_TO_NUM ( expression_list )
CAST ( expression AS type_name )
CAST ( MULTISET (subquery) AS type_name )
COALESCE ( expr1, expr2, [expr…] )
CHARTOROWID ( input_char )
FROM_TZ ( timestamp_value, timezone_value )
HEXTORAW ( charvalue )
NUMTODSINTERVAL ( number, interval_unit )
NUMTOYMINTERVAL ( number, interval_unit )
RAWTOHEX ( charvalue )
RAWTONHEX ( raw )
ROWIDTOCHAR ( rowid )
ROWIDTONCHAR ( rowid )
SCN_TO_TIMESTAMP ( number )
TIMESTAMP_TO_SCN ( timestamp )
TO_BINARY_DOUBLE ( expression [, format [,
nlsparam ] ] )
TO_CHAR( input_value, [format_mask],
[nls_parameter] )
TO_CLOB ( input_string )
TO_DATE( charvalue, [format_mask],
[nls_date_language] )
TO_DSINTERVAL ( input_string [, nlsparam] )
TO_LOB ( long_value )
TO_MULTI_BYTE ( string )
TO_NCHAR ( input_string )
TO_NCHAR ( input_datetime [, format [,nlsparam ] ] )
TO_NCHAR ( number [, format [, nlsparam ] ] )
TO_NCLOB ( lob_value )
TO_NUMBER ( input_value, [format_mask],
[nls_parameter] )
Numeric and Maths Functions
ABS ( number )
ACOS ( number )
ASIN ( number )
ATAN2 ( number1 [/|,] number2 )
BITAND ( expr1, expr2 )
CEIL ( input_val )
CORR ( expression1, expression2 )
COS ( number )
COSH (number)
COVAR_POP ( expression1, expression2 ) [OVER
(analytic_clause)]
COVAR_SAMP ( expression1, expression2 ) [OVER
(analytic_clause)]
CUME_DIST (expression1, … expression_n) WITHIN
GROUP (ORDER BY expression_order1, …
expression_order_n)
CUME_DIST() OVER ( [query_partition_clause]
ORDER BY order_clause )
DENSE_RANK ( expr, [expr(n)] ) WITHIN GROUP (
ORDER BY (order_expr [ASC|DESC] [NULLS
FIRST|LAST] )
DENSE_RANK() OVER ( [query_partition_clause]
order_by_clause)
EXP ( number )
EXTRACT ( date_component FROM expression )
FLOOR ( input_number )
GREATEST ( expr1, [expr_n] )
LEAST ( expr1, [expr_n] )
LN ( number )
LOG ( [base, ] expression )
MEDIAN ( expr ) [OVER (query_partition_clause)]
MOD ( numerator, denominator )
ORA_HASH ( expression [, max_bucket [,
seed_value ] ] )
PERCENT_RANK ( expression ) WITHIN GROUP (
ORDER BY (expression_n [. DESC | ASC ] [NULLS
FIRST|LAST] )
PERCENT_RANK () OVER ( [query_partition_clause]
order_by_clause )
PERCENTILE_CONT ( expression) WITHIN GROUP
( ORDER BY expression [ ASC | DESC ] [OVER (
PERCENTILE_DISC ( expression) WITHIN GROUP (
INITCAP ( input_string )
INSTR ( string, substring, [start_position],
[occurrence] )
[occurrence] )
[occurrence] )
INSTRB ( string, substring, [start_position],
[occurrence] )
INSTRC ( string, substring, [start_position],
[occurrence] )
LISTAGG ( measure_expr [, delimiter]) WITHIN
GROUP (order_by_clause) [OVER
query_partition_clause]
LENGTH ( string_value )
LENGTHB ( string_value )
LENGTHC ( string_value )
LOWER ( input_string )
LPAD( expr, length [, pad_expr] )
LTRIM( input_string, [trim_string] )
LNNVL ( condition )
NCHR ( number_code )
NLS_INITCAP ( input_char [, nlsparam ] )
NLS_LOWER ( input_char [, nlsparam ] )
NLS_UPPER ( input_char [, nlsparam ] )
NLSSORT ( input_char [, nlsparam ] )
NANVL ( check_value, replace_value )
NVL ( check_value, replace_value )
NVL2 ( value_to_check, value_if_not_null,
value_if_null )
NULLIF ( expr1, expr2 )
REGEXP_COUNT ( source_char, pattern [, position [,
match_pattern [, subexpression ] ] ] )
REGEXP_INSTR ( source_char, pattern [, position [,
occurrence [, return_option [, match_pattern [,
subexpression ] ] ] ] ] )
REGEXP_REPLACE ( source_char, pattern [,
replace_string [, position [, occurrence [,
match_parameter ] ] ] ] )
REGEXP_SUBSTR ( source_char, pattern [, position
[, occurrence [, match_parameter ] ] ] ] )
REPLACE ( whole_string, string_to_replace,
[replacement_string])

ROLLUP
https://oracle-base.com/articles/misc/rollup-cube-grouping-functions-and-grouping-sets

Regular Expressions
select regexp_replace(column_name, '[^[:digit:]]', '')
from mytable;
Get number out of string - replace non numeric by nothing

Lookahead assertion +
Negative lookahead +
Lookbehind assertion +
Negative lookbehind +
Once-only Subexpression
Condition [if then]
Condition [if then else]
Comment
Assertions
?=
?!
?<=
?!= or ?<!
?>
?()
?()|
?#
Letters, numbers and hyphens
Date (e.g. 21/3/2006)
jpg, gif or png image
Any number from 1 to 50 inclusive
Valid hexadecimal colour code
8 to 15 character string with at least one
upper case letter, one lower case letter,
and one digit (useful for passwords).
Email addresses
HTML Tags
0 or more +
0 or more, ungreedy +
1 or more +
1 or more, ungreedy +
0 or 1 +
0 or 1, ungreedy +
Exactly 3 +
3 or more +
3, 4 or 5 +
3, 4 or 5, ungreedy +
Quantifiers
*
*?
+
+?
?
??
{3}
{3,}
{3,5}
{3,5}?
Any character except
new line (n) +
a or b +
Group +
Passive Group +
Range (a or b or c) +
Not a or b or c +
Letter between a and q +
Upper case letter +
between A and Q +
Digit between 0 and 7 +
nth group/subpattern +
Ranges
.
(a|b)
(...)
(?:...)
[abc]
[^abc]
[a-q]
[A-Q]
[0-7]
n
Global match
Case-insensitive
Multiple lines
Treat string as single line
Allow comments and
white space in pattern
Evaluate replacement
Ungreedy pattern
Pattern Modifiers
g
i
m
s
x
e
U
nth non-passive group
"xyz" in /^(abc(xyz))$/
"xyz" in /^(?:abc)(xyz)$/
Before matched string
After matched string
Last matched string
Entire matched string
Entire input string
Literal "$"
String Replacement (Backreferences)
$n
$2
$1
$`
$'
$+
$&
$_
$$
Escape Character +
New line +
Carriage return +
Tab +
Vertical tab +
Form feed +
Alarm
Backspace
Escape
Named Character
Special Characters

n
r
t
v
f
a
[b]
e
N{name}
Metacharacters (must be escaped)
[
{

|
>
^
$
(
)
<
.
*
+
?
Items marked + should work in most
regular expression implementations.Note
Ranges are inclusive.Note
These patterns are intended for reference purposes and have not been extensively tested.
Please use with caution and test thoroughly before use.Note
Control character
White space
Not white space
Digit
Not digit
Word
Not word
Hexadecimal character hh
Octal character xxx
Character Classes
c
s
S
d
D
w
W
xhh
Oxxx
Upper case letters
Lower case letters
All letters
Digits and letters
Digits
Hexadecimal digits
Punctuation
Space and tab
Blank characters
Control characters
Printed characters
Printed characters and
spaces
Digits, letters and
underscore
POSIX Character Classes
[:upper:]
[:lower:]
[:alpha:]
[:alnum:]
[:digit:]
[:xdigit:]
[:punct:]
[:blank:]
[:space:]
[:cntrl:]
[:graph:]
[:print:]
[:word:]
Start of line +
Start of string +
End of line +
End of string +
Word boundary +
Not word boundary +
Start of word
End of word
Anchors
^
A
$
Z
b
B
<
>
Sample Patterns
([A-Za-z0-9-]+)
(d{1,2}/d{1,2}/d{4})
([^s]+(?=.(jpg|gif|png)).2)
(^[1-9]{1}$|^[1-4]{1}[0-9]{1}$|^50$)
(#?([A-Fa-f0-9]){3}(([A-Fa-f0-9]){3})?)
((?=.*d)(?=.*[a-z])(?=.*[A-Z]).{8,15})
(w+@[a-zA-Z_]+?.[a-zA-Z]{2,6})
(<(/?[^>]+)>)
Available free from
AddedBytes.com
http://www.cbs.dtu.dk/courses/27610/regular-expressions-cheat-sheet-v2.pdf

Want to learn more about Regular Expressions?

Documentation
https://github.com/OraOpenSource/plsql-md-doc/blob/master/docs/demo.md

Documentation generation
❖ Use snippets
❖ Use extension e.g. PL/SQL in Visual Studio Code

Error Package
Create reusable components !!

APEX Dictionary
❖ SELECT * FROM APEX_DICTIONARY

Substitution Strings
❖ Bind variable: :ITEM
❖ Substitution String: &ITEM.
❖ PL/SQL: v(‘ITEM’)
❖ Template: #ITEM#

❖ HTML escapes reserved HTML characters
❖ &ITEM!HTML.
❖ #REPORT_COLUMN!HTML#
❖ ATTR escapes reserved characters in a HTML attribute
❖ #REPORT_COLUMN!ATTR#
❖ removes HTML tags from the output and escapes reserved
HTML characters
❖ &ITEM!STRIPHTML.
❖ #REPORT_COLUMN!STRIPHTML#
APEX_ESCAPE.HTML
APEX_ESCAPE.HTML_ATTRIBUTE
wwv_ﬂow_utilities.striphtml

❖ JS escapes reserved characters in a JavaScript
❖ &ITEM!JS.
❖ #REPORT_COLUMN!JS#
APEX_ESCAPE.JS_LITERAL

Built-in Substitution Strings
❖ APEX$ROW_NUM
❖ APEX$ROW_SELECTOR
❖ APEX$ROW_STATUS
❖ APP_ID
❖ APP_ALIAS
❖ APP_AJAX_X01, ... APP_AJAX_X10
❖ APP_DATE_TIME_FORMAT
❖ APP_IMAGES
❖ APP_NLS_DATE_FORMAT
❖ APP_NLS_TIMESTAMP_FORMAT
❖ APP_NLS_TIMESTAMP_TZ_FORMAT
❖ APP_PAGE_ALIAS
❖ APP_PAGE_ID
❖ APP_REQUEST_DATA_HASH
❖ APP_SESSION
❖ APP_SESSION_VISIBLE
❖ APP_TITLE
❖ APP_UNIQUE_PAGE_ID
❖ APP_USER
❖ AUTHENTICATED_URL_PREFIX
❖ BROWSER_LANGUAGE
❖ CURRENT_PARENT_TAB_TEXT
❖ DEBUG
❖ HOME_LINK
❖ IMAGE_PREFIX
❖ JET_BASE_DIRECTORY
❖ JET_CSS_DIRECTORY
❖ JET_JS_DIRECTORY
❖ LOGIN_URL
❖ LOGOUT_URL
❖ PRINTER_FRIENDLY
❖ PROXY_SERVER
❖ PUBLIC_URL_PREFIX
❖ REQUEST
❖ Using REQUEST
❖ SCHEMA OWNER
❖ SQLERRM
❖ SYSDATE_YYYYMMDD
❖ THEME_DB_IMAGES
❖ THEME_IMAGES
❖ WORKSPACE_IMAGES
❖ WORKSPACE_ID

Environment variables
owa_util.print_cgi_env
owa_util.get_cgi_env(‘VARIABLE_NAME’)

APEX URL
f?p=App:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly

APEX URL
f?p=APP:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly
- Application Id: 1 
- Application Id: &APP_ID.
- Application Alias: MY_APP 
- Application Alias: &APP_ALIAS.
- Application in a speciﬁc Workspace: &c=WORKSPACE

APEX URL
f?p=App:PAGE:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly
- Page Id: 1 
- Page Id: &APP_PAGE_ID.
- Unique Page View Id: &APP_UNIQUE_PAGE_ID. 
(use in request or debug - you can not use it to navigate as it’s unique for the view)
- Page Alias: MY_PAGE 
- Page Alias: &APP_PAGE_ALIAS.

APEX URL
f?p=App:Page:SESSION:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly
- Session Id: &SESSION. 
- Session Id: &APP_SESSION_ID.
- Session 0: 0 
- Session 0: &APP_SESSION_VISIBLE.

APEX URL
f?p=App:Page:Session:REQUEST:Debug:ClearCache:itemNames:itemValues:PrinterFriendly
- Application Button
- Request: APPLICATION_PROCESS=XYZ
- Interactive Report: IR[static id]_SAVED_REPORT
- Clone an APEX session: APEX_CLONE_SESSION

APEX URL
f?p=App:Page:Session:Request:DEBUG:ClearCache:itemNames:itemValues:PrinterFriendly
- YES
- NO
- Leveln (n between 1 and 9)
- &DEBUG.

APEX URL
f?p=App:Page:Session:Request:Debug:CLEARCACHE:itemNames:itemValues:PrinterFriendly
- Page Number(s): comma separated
- Collection Names
- RP: Reset Region Pagination
- APP: All Pages, All Application Items, Remove User Sort
- SESSION: All used apps in that session

APEX URL
f?p=App:Page:Session:Request:Debug:Clearcache:ITEMNAMES:ITEMVALUES:PrinterFriendly
- Items comma separated
- Values comma separated; not allowed to have “:” 
when using comma use backslash /12,34/
- IR columns: IREQ_CUST_FIRST_NAME

APEX URL
f?p=App:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly
- YES
- NO

APEX URL
f?p=App:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly 
&p_lang=en
- Choose language

APEX URL
f?p=App:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly 
&p_trace=YES
- Enable tracing: generates a trace ﬁle
- YES
- NO

Generate an APEX URL
❖ apex_util.prepare_url( 
‘f?p=&APP_ID.:HOME:&APP_SESSION.::::P1_X:’ || :P1_X 
);

Generate an APEX URL
❖ apex_page.get_url( 
p_page => 1, 
p_items => 'P1_X,P1_Y', 
p_values => 'somevalue,othervalue'  
);

PL/SQL APIs for URLs
❖ APEX_UTIL.URL_ENCODE
❖ APEX_UTIL.HOST_URL
❖ APEX_UTIL.REDIRECT_URL
❖ APEX_MAIL.GET_INSTANCE_URL
❖ APEX_MAIL.GET_IMAGES_URL
❖ API to generate URLs for use in APEX:  
https://livesql.oracle.com/apex/livesql/ﬁle/content_CPSSPPZRWVADCX4KAMR6ZZB62.html

JavaScript and URLs
❖ apex.navigation.dialog
❖ apex.navigation.openInNewWindow
❖ apex.navigation.popup
❖ apex.navigation.redirect
❖ show inline dialog -> openModal(‘dialog_auto')
https://docs.oracle.com/database/apex-5.1/AEAPI/apex-navigation-namespace.htm#AEAPI29504

JavaScript and URLs
❖ apex.server.url ({ 
p_request: "DELETE", 
x01: "test", 
pageItems: "#P1_DEPTNO,#P1_EMPNO" }); 
❖ apex.server.process ( "MY_PROCESS", { 
x01: "test", 
pageItems: "#P1_DEPTNO,#P1_EMPNO" 
},{ 
success: function( pData ) 
// do something here 
} 
} );
=> APEX_APPLICATION.G_X01

Referencing Custom Items
❖ If you need to create your own items, you can access
them after a page is submitted by referencing
APEX_APPLICATION.G_FXX (01-50)

Download document
sys.htp.flush;
sys.htp.init;
owa_util.mime_header(‘application/octet-stream',false);
sys.htp.p(‘Content-length:'||dbms_lob.getlength(l_blob));
sys.htp.p(‘Content-Disposition:attachment;filename=“output.pdf”’);
owa_util.http_header_close;
wpg_docload.download_file(l_blob);
apex_application.stop_apex_engine;

Universal Theme  
Cheat Sheet

https://apex.oracle.com/ut

APEX Builder Keyboard
Cheat Sheet

Oracle APEX 5 Keyboard Shortcuts Keyboard Shortcuts
by Scott (sspendol) via cheatography.com/24422/cs/6036/
Actions
Function Mac PC
Save Ctrl+Option+S Ctrl+Alt+S
Save and Run Page Ctrl+Option+R Ctrl+Alt+R
Undo Ctrl+Z Ctrl+Z
Redo Ctrl+Y Ctrl+Y
Region Actions
Display From Here Ctrl+Option+D Ctrl+Alt+D
Display From Page Ctrl+Option+T Ctrl+Alt+T
Restore/Expand Option+F11 Alt+F11
Toggle Empty Region Positions Ctrl+Option+E Ctrl+Alt+E
Miscellaneous
Help Option+F1 Alt+F1
Messages Ctrl+F1 Ctrl+F1
Page Search Ctrl+Option+F Ctrl+Alt+F
Keyboard Shortcuts Option+Shift+F Alt+Shift+F1
Regions
Function Mac PC
Rendering Option+1 Alt+1
Dynamic Actions Option+2 Alt+2
Processing Option+3 Alt+3
Page Shared Components Option+4 Alt+4
Grid Layout Option+5 Alt+5
Property Editor Option+6 Alt+6
Gallery Regions Option+7 Alt+7
Gallery Items Option+8 Alt+8
Gallery Buttons Option+9 Alt+9
By Scott (sspendol)
cheatography.com/sspendol/
spendolini.blogspot.com
Published 10th November, 2015.
Last updated 10th November, 2015.
Page 1 of 1.
Sponsored by Readability-Score.com
Measure your website readability!
https://readability-score.com

type t_page_item is record (
id number,
name varchar2(255),
label varchar2(4000),
plain_label varchar2(4000),
format_mask varchar2(255),
is_required boolean,
lov_definition varchar2(4000),
lov_display_extra boolean,
lov_display_null boolean,
lov_null_text varchar2(255),
lov_null_value varchar2(255),
lov_cascade_parent_items varchar2(255),
ajax_items_to_submit varchar2(255),
ajax_optimize_refresh boolean,
element_width number,
element_max_length number,
element_height number,
element_attributes varchar2(2000),
element_option_attributes varchar2(4000),
escape_output boolean,
attribute_01 varchar2(32767), … );
type t_page_item_render_result is record (
is_navigable boolean default false,
navigable_dom_id varchar2(255) );
type t_page_item_validation_result is record (
message varchar2(32767),
display_location varchar2(40), /* if not set the app default is used */
page_item_name varchar2(255) ); /* if not set the validated page item
name is used */
Render function
function <name of function> (
p_item in apex_plugin.t_page_item,
p_plugin in apex_plugin.t_plugin,
p_value in varchar2,
p_is_readonly in boolean,
p_is_printer_friendly in boolean )
return apex_plugin.t_page_item_render_result;
apex_plugin: item
type t_region is record (
id number,
static_id varchar2(255),
name varchar2(255),
type varchar2(255),
source varchar2(32767),
error_message varchar2(32767),
Render function
p_region in apex_plugin.t_region,
p_plugin in apex_plugin.t_plugin,
p_is_printer_friendly in boolean )
return apex_plugin.t_region_render_result;
apex_plugin: region
type t_dynamic_action is record (
id number,
action varchar2(50),
type t_dynamic_action_render_result is record (
javascript_function varchar2(32767),
ajax_identifier varchar2(255),
Render function
p_dynamic_action in apex_plugin.t_dynamic_action,
p_plugin in apex_plugin.t_plugin )
return apex_plugin.t_dynamic_action_render_result;
apex_plugin: DA
type t_process is record (
id number,
name varchar2(255),
success_message varchar2(32767),
type t_process_exec_result is record (
success_message varchar2(32767) );
Execute function
p_process in apex_plugin.t_process,
p_plugin in apex_plugin.t_plugin )
return apex_plugin.t_process_exec_result;
apex_plugin: process
Returns the name attribute which has to be used for a HTML input element
if you want that the value of the element is stored in session state when the
page is submitted. If you have a HTML input element which returns multiple
values (eg. select list with multiple="multiple") you have to set p_is_multi_value.
Note: This function has to be called before you write something to the HTTP buffer
with HTP.P(RN)
function get_input_name_for_page_item (
p_is_multi_value in boolean )
return varchar2;
function escape (
p_escape in boolean ) return varchar2;
Note: if both values are null, TRUE will be returned as well.
function is_equal (
p_value1 in varchar2,
p_value2 in varchar2 ) return boolean;
Returns the position in the list where p_value is stored. If it's not found
null will be returned.
function get_position_in_list (
p_list in wwv_flow_global.vc_arr2,
p_value in varchar2 ) return number;
Outputs the value in an escaped form. It's also taking care of chunking big strings into smaller outputs.
procedure print_escaped_value (
p_value in varchar2 );
Outputs a hidden field to store the page item value if the
page item is rendered readonly but not printer friendly
procedure print_hidden_if_readonly (
p_item_name in varchar2,
p_is_printer_friendly in boolean,
p_id_postfix in varchar2 default null );
Outputs a hidden protected field to store the page item value.
procedure print_hidden_protected (
p_id_postfix in varchar2 default null );
Outputs a SPAN tag for a display only field.
procedure print_display_only (
p_display_value in varchar2,
p_show_line_breaks in boolean,
p_escape in boolean,
p_attributes in varchar2,
p_id_postfix in varchar2 default '_DISPLAY' );
Outputs an OPTION tag. The values are always escaped.
procedure print_option (
p_display_value in varchar2,
p_return_value in varchar2,
p_is_selected in boolean,
p_attributes in varchar2,
p_escape in boolean default true );
Outputs a JSON response based on the result of a two column LOV in the format:
[{"d":"display","r":"return"},{"d":...,"r":...},...]
p_component_name is the name of the page item or report column, ... which is used in case an error has to be displayed.
Note: The HTTP header is initialized with mime type "application/json"
procedure print_lov_as_json (
p_sql_statement in varchar2,
p_component_name in varchar2,
p_escape in boolean,
p_support_legacy_lov in boolean default false /*internal use only! */);
Returns a Javascript array with all the page items which are really on the
current and on page 0. p_bind_variable_list are the bind variables returned by wwv_flow_utilities.get_binds
function get_depending_fields (
p_bind_variable_list in wwv_flow_global.vc_arr2 )
return varchar2;
apex_plugin_util
type t_plugin is record (
name varchar2(45),
file_prefix varchar2(4000),
apex_plugin: plugin
apex_plugin: functions
* For a complete refererence check the apex_plugin and apex_plugin_util packages
Returns the AJAX identifier which has to be used for the on-demand
call of a plug-in. Note: if the plug-in doesn't have an AJAX callback
configured, null will be returned!
function get_ajax_identifier return varchar2;

apex_plugin_util
Executes the query and returns the values for each column.
Note: All column values are returned as a string
p_sql_statement: SQL statement which should be executed.
p_min_columns and p_max_columns: Used to check if the
SQL statement complies to the number of required columns.
p_component_name: The name of the page item or report
column which is used in case an error has to be displayed.
p_search_type: Use one of the c_search_* constants.
p_search_column_no: Column which should be used to restrict
the SQL statement. Has to be in range of p_min_column and p_max_column.
p_search_string: Value which should be used to restrict the query.
p_first_row: Skips all rows before the specified row. Can be used for pagination.
p_max_rows: Limits the number of returned rows.
function get_data (
p_min_columns in number,
p_max_columns in number,
p_search_type in varchar2 default null,
p_search_column_no in varchar2 default 2,
p_search_string in varchar2 default null,
p_first_row in number default null,
p_max_rows in number default null,
p_support_legacy_lov in boolean default false /* internal use only! */ )
return t_column_value_list;
Advanced version of get_data, returns the column values with original data types.
p_data_type_list: If provided checks that the data type for each column matches to
the specified data type in the array. Use the constants c_data_type_* for available data types.
function get_data2 (
p_data_type_list in wwv_flow_global.vc_arr2 default c_empty_data_type_list,
p_search_type in varchar2 default null,
p_search_column_no in varchar2 default 2,
p_search_string in varchar2 default null,
p_first_row in number default null,
p_max_rows in number default null )
return t_column_value_list2;
Gets the display value for the value specified in p_search_string.
p_component_name: The name of the page item or report column, ... which
is used in case an error has to be displayed.
p_display_column_no: Column which should be returned from the SQL statement.
Has to be in range of p_min_column and p_max_column.
p_search_column_no: Column which should be used to restrict the SQL statement.
Has to be in range of p_min_column and p_max_column.
p_search_string: Value which should be looked up.
p_display_extra: If set to TRUE and a value isn't found, the search value will be
added to the result instead.
Note: In the case multiple rows are returned by the query, just the first one is returned.
function get_display_data (
p_display_column_no in binary_integer default 1,
p_search_column_no in binary_integer default 2,
p_search_string in varchar2,
p_display_extra in boolean default true,
p_support_legacy_lov in boolean default false /* for internal use only! */ )
return varchar2;
Gets the display values for the values specified in p_search_value_list.
function get_display_data (
p_display_column_no in binary_integer default 1,
p_search_column_no in binary_integer default 2,
p_search_value_list in wwv_flow_global.vc_arr2,
p_display_extra in boolean default true,
p_support_legacy_lov in boolean default false /* for internal use only! */ )
return wwv_flow_global.vc_arr2;
Returns a jQuery selector based on a comma delimited string of page item names.
function page_item_names_to_jquery (
p_page_item_names in varchar2 )
return varchar2;
Returns a cleaned up version of a comma delimited string of page item names
where all spaces are removed, colons are replaced with a comma and the page item
names are converted to uppercase. This is important for JavaScript code, because page
item names are case sensitive in the browser.
function cleanup_page_item_names (
p_page_item_names in varchar2 )
return varchar2;
apex_javascript
Adds the script tag to load a javascript library.
p_name: has to be specified without .js
p_directory: has to have a trailing slash
p_version: version identifier which should be added to the library name
p_skip_extension: if true the extension .js is NOT added
procedure add_library(
p_name in varchar2,
p_directory in varchar2 default wwv_flow.g_image_prefix||'javascript/',
p_version in varchar2 default c_apex_version,
p_skip_extension in boolean default false );
Adds a javascript code snippets to the HTML output which is executed at the onload event.
If an entry with the same key exists it will be ignored.
If p_key is null the snippet will always be added.
p_code: javascript code snippet. eg: $s('P1_TEST', 'abc');
p_key: name of the key. eg: APEX_WIDGET
procedure add_onload_code(
p_code in varchar2,
p_key in varchar2 default null);
Adds a code snippet which is included inline into the HTML output
eg. You can use this procedure to add new functions or global variable declarations.
Note: if you want to execute code, you should use add_onload_code
p_code: javascript code snippet. eg: $s('P1_TEST', 123);
p_key: identifier for the code snippet. If specified and a code snippet with the same name has
already been added the new code snippet will be ignored.
procedure add_inline_code(
p_code in varchar2,
p_key in varchar2 default null);
Escapes a text so that it can be used in JavaScript without problems.
Replaces with , / with /, " with u0022, ' with u0027, tab with t,chr(10) with n.
function escape (
p_text in varchar2 ) return varchar2;
apex_css
Adds the style tag to load a css library.
p_name: has to be specified without .js
p_directory: has to have a trailing slash
p_version: version identifier which should be added to the library name
p_skip_extension: if true the extension .css is NOT added
procedure add_file (
p_name in varchar2,
p_directory in varchar2 default wwv_flow.g_image_prefix||'css/',
p_version in varchar2 default c_apex_version,
p_skip_extension in boolean default false );
Adds a CSS style snippet which is included inline into the HTML output
eg. You can use this procedure to add new css style declarations.
p_style: CSS style snippet. eg: #test { color:#fff }
p_key: identifier for the style snippet. If specified and a style snippet with the same name has
already been added the new style snippet will be ignored.
procedure add (
p_css in varchar2,
p_key in varchar2 default null );
Writes the data of the page item meta data into the HTTP buffer.
procedure debug_page_item (
p_plugin in wwv_flow_plugin.t_plugin,
p_page_item in wwv_flow_plugin.t_page_item );
procedure debug_page_item (
p_page_item in wwv_flow_plugin.t_page_item,
p_is_printer_friendly in boolean );
Writes the data of the region meta data into the HTTP buffer.
procedure debug_region (
p_region in wwv_flow_plugin.t_region );
procedure debug_region (
p_region in wwv_flow_plugin.t_region,
p_is_printer_friendly in boolean );
Writes the data of the dynamic action meta data into the HTTP buffer.
procedure debug_dynamic_action (
p_dynamic_action in wwv_flow_plugin.t_dynamic_action );
Writes the data of the process meta data into the HTTP buffer.
procedure debug_process (
p_process in wwv_flow_plugin.t_process );

Recap
❖ Things I always have to look up in following domains:
❖ Database
❖ SQL
❖ PL/SQL
❖ APEX

Q&A
www.apexRnD.be
dgielis.blogspot.com
@dgielis
dgielis@apexRnD.be

❖ Looking for consulting, training and development in
Oracle Application Express (APEX)?
❖ Contact : www.apexRnD.be
❖ Mail : info@apexRnD.be
Consulting, Development, Training

Oracle APEX Cheat Sheet

More Related Content

What's hot (20)

Similar to Oracle APEX Cheat Sheet (20)

More from Dimitri Gielis (19)

Recently uploaded (20)

Oracle APEX Cheat Sheet