2024年4月2日 星期二

List of Unicode characters



 https://www.techonthenet.com/unicode/chart.php

https://en.wikipedia.org/wiki/List_of_Unicode_characters

Unicode Characters (U+0000 - U+003F)

UnicodeCharDecHexOctHTML
Code
Escaped
Unicode
UTF-8Description
U+0000^@000000 \u00000Null (NUL)
U+0001^A101001 \u00011Start of heading (SOH)
U+0002^B202002 \u00022Start of text (STX)
U+0003^C303003 \u00033End of text (ETX)
U+0004^D404004 \u00044End of transmission (EOT)
U+0005^E505005 \u00055Enquiry (ENQ)
U+0006^F606006 \u00066Acknowledge (ACK)
U+0007^G707007 \u00077Bell (BEL)
U+0008^H808010 \u00088Backspace (BS)
U+0009^I909011 \u00099Horizontal tab (HT)
U+000A^J100A012 \u000AALine feed (LF)
U+000B^K110B013 \u000BBVertical tab (VT)
U+000C^L120C014 \u000CCNew page/form feed (FF)
U+000D^M130D015 \u000DDCarriage return (CR)
U+000E^N140E016 \u000EEShift out (SO)
U+000F^O150F017 \u000FFShift in (SI)
U+0010^P1610020 \u001010Data link escape (DLE)
U+0011^Q1711021 \u001111Device control 1 (DC1)
U+0012^R1812022 \u001212Device control 2 (DC2)
U+0013^S1913023 \u001313Device control 3 (DC3)
U+0014^T2014024 \u001414Device control 4 (DC4)
U+0015^U2115025 \u001515Negative acknowledge (NAK)
U+0016^V2216026 \u001616Synchronous idle (SYN)
U+0017^W2317027 \u001717End of transmission block (ETB)
U+0018^X2418030 \u001818Cancel (CAN)
U+0019^Y2519031 \u001919End of medium (EM)
U+001A^Z261A032 \u001A1ASubstitute (SUB)
U+001B^[271B033 \u001B1BEscape (ESC)
U+001C^\281C034 \u001C1CFile separator (FS)
U+001D^]291D035 \u001D1DGroup separator (GS)
U+001E^^301E036 \u001E1ERecord separator (RS)
U+001F^_311F037 \u001F1FUnit separator (US)
U+00203220040 \u002020Space
U+0021!3321041!\u002121Exclamation mark
U+0022"3422042"\u002222Quotation mark/Double quote
U+0023#3523043#\u002323Number sign
U+0024$3624044$\u002424Dollar sign
U+0025%3725045%\u002525Percent sign
U+0026&3826046&\u002626Ampersand
U+0027'3927047'\u002727Apostrophe/Single quote
U+0028(4028050(\u002828Left parenthesis
U+0029)4129051)\u002929Right parenthesis
U+002A*422A052*
*
\u002A2AAsterisk
U+002B+432B053+\u002B2BPlus sign
U+002C,442C054,\u002C2CComma
U+002D-452D055-\u002D2DHyphen/Minus
U+002E.462E056.\u002E2EFull stop/Period
U+002F/472F057/\u002F2FSolidus/Slash
U+0030048300600\u003030Digit zero
U+0031149310611\u003131Digit one
U+0032250320622\u003232Digit two
U+0033351330633\u003333Digit three
U+0034452340644\u003434Digit four
U+0035553350655\u003535Digit five
U+0036654360666\u003636Digit six
U+0037755370677\u003737Digit seven
U+0038856380708\u003838Digit eight
U+0039957390719\u003939Digit nine
U+003A:583A072:\u003A3AColon
U+003B;593B073;\u003B3BSemicolon
U+003C<603C074&lt;\u003C3CLess-than sign
U+003D=613D075&equals;\u003D3DEqual/Equality sign
U+003E>623E076&gt;\u003E3EGreater-than sign
U+003F?633F077&quest;\u003F3FQuestion mark

How to find the chr(10) or chr(13) is in between a CLOB string

 https://asktom.oracle.com/ords/f?p=100:11:::::P11_QUESTION_ID:9545618700346118891

How to Replace a New Line in Oracle

 


https://learnsql.com/cookbook/how-to-replace-a-new-line-in-oracle/


2024年3月17日 星期日

CONCAT 及 ||---將由不同欄位獲得的資料串連在一起。

 

CONCAT 及 ||

有的時候,我們有需要將由不同欄位獲得的資料串連在一起。

CONCAT() 的語法如下:

CONCAT(字串1, 字串2, 字串3, ...): 將字串1、字串2、字串3,等字串連在一起。請注意,Oracle的CONCAT()只允許兩個參數;換言之,一次只能將兩個字串串連起來。不過,在Oracle中,我們可以用'||'來一次串連多個字串。

SQL :MAX() 函數來計算一個欄位的最大值。計算最大值的語法是:

 最大值 MAX()

MAX() 函數來計算一個欄位的最大值。計算最大值的語法是:

SELECT MAX("欄位名")
FROM "表格名"

ORA-02069: global_names parameter must be set to TRUE for this operation

 

ORA-02069: global_names parameter must be set to TRUE for this operation

Git Branching Strategies

 

Git Branching Strategies相關資料,先記下來,找時間理解

List of Unicode characters

 https://www.techonthenet.com/unicode/chart.php https://en.wikipedia.org/wiki/List_of_Unicode_characters Unicode Characters (U+0000 - U+003F...