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Swadhin Ray
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Replace all occurrence in pl sql except the first one

Hello Experts,

I have the below SQL statement:

SELECT to_clob('{
      "metadata": {
                "VISIT_TYPE":"TEST"
      },
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V12-4002-2013-11"
    }
       ]
        ,
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V284-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V12-5302-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V288-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V95-5293-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V292-5287-2013-11"
    }
       ]
        } ' ) my_data
    FROM dual;

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I want to replace all occurrence of the below with a comma except the first one:

] , "TODAY":[

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] , "UPCOMING":[

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Oracle Database
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Last Comment
Swadhin Ray
8/22/2022 - Mon
Swadhin Ray
ASKER
This is how I was trying but it replace all occurrence the of TODAY :

create table t_clob (col1 clob );

DECLARE

        l_replace_today VARCHAR2(1000) := ']
        ,
      "TODAY":[';

        l_clob CLOB;

BEGIN

        SELECT to_clob('{
      "metadata": {
                "VISIT_TYPE":"TEST"
      },
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V12-4002-2013-11"
    }
       ]
        ,
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V284-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V12-5302-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V288-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V95-5293-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V292-5287-2013-11"
    }
       ]
        }')
          INTO l_clob
          FROM dual;

        l_clob := REPLACE(l_clob
                         ,l_replace_today
                         ,',');
                         
 insert into t_clob values(  l_clob);
 commit;                      

END;

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Sean Stuber
this does what you asked, but I don't think it does what you want.

SELECT REGEXP_REPLACE(
           my_data,
           rep2,
           ',',
           REGEXP_INSTR(my_data, rep2) + 1
       )
           my_data
  FROM (SELECT REGEXP_REPLACE(
                   my_data,
                   rep1,
                   ',',
                   REGEXP_INSTR(my_data, rep1) + 1
               )
                   my_data,
               rep2
          FROM (SELECT TO_CLOB('{
      "metadata": {
                "VISIT_TYPE":"TEST"
      },
      "UPCOMING":[

          {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V12-4002-2013-11"
    }
       ]
        ,
      "UPCOMING":[

          {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V284-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

          {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V12-5302-2013-11"
    }
       ]
        ,
      "TODAY":[

          {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V288-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

          {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V95-5293-2013-11"
    }
       ]
        ,
      "TODAY":[

          {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V292-5287-2013-11"
    }
       ]
        } ') my_data,
                       ']\s*,\s*"TODAY":\[' rep1,
                       ']\s*,\s*"UPCOMING":\[' rep2
                  FROM DUAL))

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Sean Stuber
the reason I say that is you have UPCOMING nodes both with and without preceding close brackets "]"

So, searching for ],"UPCOMING"[  lets the first one slip through.

It is however, what you asked for.  Easy fix is to simply replace all of these:   ],"UPCOMING"[   and let the unprefixed one come through.
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck
Sean Stuber
Since this will likely require a followup question...

In that one:  Post your starting text and the final text you want.

Descriptions can be miswritten and misread.  

Given input and expected output removes ambiguity.
Swadhin Ray
ASKER
I was trying the SQL but its works for Today only.

So here is my input:

{
      "metadata": {
                "VISIT_TYPE":"TEST"
      },
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V12-4002-2013-11"
    }
       ]
        ,
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V284-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V12-5302-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V288-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V95-5293-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V292-5287-2013-11"
    }
       ]
        }

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And expected result will be after replacing today and upcoming .. 

{
      "metadata": {
                "VISIT_TYPE":"TEST"
      },
      "UPCOMING":[

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V12-4002-2013-11"
    }
       ,

		  {
        "REPORT_TYPE":"UPCOMING",
"VISIT_STATUS":"Pre-Audit - Audit Planned",
"VISIT_STATUS_ID":"1",
"VISIT_ID":"V284-5287-2013-11"
    }
       ]
        ,
      "TODAY":[

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V12-5302-2013-11"
    }
      ,

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V288-5287-2013-11"
    }
      ,

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V95-5293-2013-11"
    }
      ,

		  {
        "REPORT_TYPE":"TODAY",
"VISIT_STATUS":"Audit In Progress",
"VISIT_STATUS_ID":"4",
"VISIT_ID":"V292-5287-2013-11"
    }
       ]
        }

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The way i was looking it to do using a PLSQL block because I am not sure how may records can come under today , upcoming and final.

So there was only three status.
Sean Stuber
the problem isn't sql vs pl/sql, the problem was you were trying to use REPLACE which isn't sophisticated enough to detect white space variations or do positional work

So, like I said above, simply replace all of the  ],"UPCOMING"[

and that will leave the first "UPCOMING":[  in place

notice the first one doesn't have " ]' "  in front of it
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Swadhin Ray
ASKER
Superb !!!!!!!!............
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