teradata instr

Tags: oracle mysql instrWhen a migration project is encountered, the MySQL InStr function can only find if the substring is in the parent string and cannot be found as many times as it appears.Here I wrote one myself in order to migrate. Of course, I'm only here for migration, and may not fully implement the details of the original function.Oracle uses several of the following calls,Sql>selectinstr (' Thisisbelongtoyou,butnottome. ') , ' to ', asposfr

Common functions: Substr and InStr1.SUBSTR (String,start_position,[length]) to substring, return stringExplanation: String meta stringsStart_position start position (starting from 0)Length optional, number of substringssubstr ("ABCDEFG", 0); --Return: ABCDEFG, intercept all characters substr ("ABCDEFG", 2); --Return: CDEFG, intercept all characters after starting with C substr ("ABCDEFG", 0, 3); --Return: ABC, intercept starting from a 3 characters substr ("ABCDEFG", 0, 100); --Return: abcdefg,1

Today, I found out that the function of the functions, can find a specific character or string. Here's a simple example I wrote: Dim content_text,searchword_text ' Content is contents, Searchword is the text to search for Sub Search (Content,searchword) If INSTR (Content,searchword) > 0 Then Response.Write ("Found") Else Response.Write ("Not Found") End If End Sub Content_text = "Search bar collection of code and tutorials for Ahanan peacetime lea

Requirement: Splits a string that uses a delimiter connection for a fixed number of digits, such as splitting a record 215|482|850|870 into 215,482,850,870 four recordsResult: The WITH RECURSIVE statement is capable of implementing this function and

One-time modification of the closed source Entity Provider assembly to be compatible with the new EntityFramework process, assembly After reading this article, you will know how to directly modify a DLL without the source code to remove the strong naming restrictions on the DLL, add your "friend assembly" directly on the Assembly (a special Attribute that is applied to the Assembly so that the internal type in the Assembly can be directly called by other assembly) ". Similarly, you can use this

) from dual; -- I'm a Chinese _ test select substring_index ('I am a Chinese _ test _ data',' _ ',-2) from dual; -- Test _ DATA select substring_index ('I am a Chinese _ test _ data',' _ ', 0) from dual; -- blank string select substring_index ('I am Chinese _ test _ data',' _ ', 3) from dual; -- I am Chinese _ test _ DATA ??? I will not test the combination of Chinese and English. ??? Mysql has substring_index functions. Does oracle need similar functions?I know that only substr and mysql substr

contains several functions for encoding and conversion: // Big5 => GBfunction b2g( $instr ) {$fp = fopen( 'language/big5-gb.tab', 'r' );$len = strlen($instr);for( $i = 0 ; $i $h = ord($instr[$i]);if( $h >= 160 ) {$l = ord($instr[$i+1]);if( $h == 161 $l == 64 )$gb = ' ';else {fseek( $fp, (($h-160)*255+$l-1)*3 );$gb =

Copy Code code as follows: function Getbot () ' Query spider Dim s_agent Getbot= "" S_agent=request.servervariables ("Http_user_agent") ' critical judgment statement If InStr (1,s_agent, "Googlebot", 1) >0 Then getbot= "Google" End If If InStr (1,s_agent, "msnbot", 1) >0 Then getbot= "MSN" End If If InStr (1,s_agent, "slurp", 1) >0

Core code:Copy codeThe Code is as follows:/*** Jscript. string package* This package contains utility functions for working with strings.*/If (typeof jscript = 'undefined '){Jscript = function (){}}Jscript. string = function (){}/*** This function searches a string for another string and returns a count* Of how many times the second string appears in the first.* (Returns the number of times a substring appears in a string)* @ Param inStr The string to

Parallel Database for OLTP and OLAPJust ASurvey article on materials in parallel database products andTechnologies for OLTP/OLAP applications. It mainly covers majorCommercial/academic efforts on developing parallel DBMS to solve theEver growing large amount of relational data processing problem.Part I–parallel DBMSs1.1 Parallel Database for OLAP (SHARED-NOTHING/MPP)TeraData–teradata Home–

Class Systeminfo_cls Public Browser, version, Platform, Issearch, Alexatoolbar Private Sub Class_Initialize () Dim Agent, Tmpstr Issearch = False If Not IsEmpty (session ("Systeminfo_cls")) Then TMPSTR = Split (Session ("Systeminfo_cls"), "| | |") Browser = tmpstr (0) Version = TMPSTR (1) Platform = TMPSTR (2) Alexatoolbar = TMPSTR (4) If tmpstr (3) = "1" Then Issearch = True End If Exit Sub End If Browser = "Unknown" Version = "Unknown" Platform = "Unknown" Agent = Request.ServerVariables ("Htt

p_seq = 1 THENIF instr (p_str, p_division, 1, p_seq) = 0 THENRETURN p_str;ELSERETURN substr (p_str, 1, instr (p_str, p_division, 1)-1 );End if;ELSEV_first: = instr (p_str, p_division, 1, p_seq-1 );V_last: = instr (p_str, p_division, 1, p_seq );IF (v_last = 0) THENIF (v_first> 0) THENRETURN substr (p_str, v_first + 1 )

to the specified end-end string (excluding the end-end string)/method The Public sub-cut (head,bot) ' argument is the first string, the tail string If isget_= false Then call steal () If InStr (Value_, head) >0 and InStr (Value_, bot) >0 then Value_=mid (Value_, InStr (Value_, head) +len (head), InStr (Value_, Bot