Convert epoch time to timestamp in oracle database with system timezone

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• Why does this Sql query shows the possible changes but does not implement it?

  So, I want to change the prefix of my tables and the following command shows the possible changes that will take place which seems alright but does not seem to implement it.

  SELECT Concat('RENAME TABLE ', TABLE_NAME, ' TO fan_', SUBSTRING_INDEX(TABLE_NAME, 'pc_',-1), ';') FROM information_schema.tables WHERE table_name like 'pc_%' and table_schema='testdbhere'

  Moreover, this isn't a writing privilege issue as changing the tables name individually works perfectly from the same user.
• how to get weeklytotal and yesterday record in mysql in one table

  Hi Everyone i am trying to implement query to get weekly and yesterday data in same table, dummy output i have shared below, if yesterday not exist as per employee_id it should we showing 0 also as per my table week start from monday and end at sunday.please help me out how to query this get weekly_total and yesterday record and one table.

  Table name-dailydata-

  Sample data

  employee_id	date	total
  20	2022-04-25	10
  20	2022-04-26	20
  20	2022-04-27	20
  20	2022-04-28	10
  20	2022-04-29	20
  20	2022-04-30	30
  20	2022-04-31	40
  20	2022-05-01	50
  40	2022-04-26	20

  expected output

  employee_id	weekly_total	yesterday_record
  20	200	40
  40	20	0

  mysql query to get weekly data

  select employee_id,sum(total) as week_total from dailydata where date between '2022-04-25' and '2022-05-01'
  
• Procedure to display the Employees of a specific Department

  Create a stored procedure, to display the lastnames as "Name" from the employee table. The requirement is as below: The name of the Procedure : EmployeesDept

  Name of the argument as Input : DeptNo

  Write the code to create the procedure

  Schema

  I wrote the Query like this but i didnt get expected output

  CREATE  PROCEDURE Employeesdept(@Deptno varchar)
  AS
  Begin
  SELECT lastname as name
  from employee
  where workdept= 'D21'
  end
  

  Expected output:

  Name --------------- Pulaski Jefferson Marino Smith Johnson Perez Monteverde Name ---------------
• How to remove non-numeric characters and search for phone number?

  SELECT * FROM Customer WHERE REGEXP_REPLACE(HOME_PHONE, '[^0-9]', '') LIKE '%1234567'

  This is my SQL query and I get error, Some fields have more than 7 character that’s why I am using % for searching last 7 characters in phone number. FYI I’m using oracle database.
• Does oracle jdbc driver only support oracle database (21c,18c,19c etc) or does it support the oracle virtualbox as well?

  Does oracle jdbc driver only support oracle database (21c,18c,19c etc) or does it support the oracle virtualbox as well? I have the virtualbox downloaded and somehow the oracle jdbc is not getting installed properly.
• Multi-part geometries: Get line & part number when extracting parts (via SDO_UTIL.EXTRACT_ALL)

  I have multi-part SDO_GEOMETRIES in Oracle 18c.

  I can extract the parts as individual rows using the SDO_UTIL.EXTRACT_ALL() function:

  with cte as (
  --Each part is wrapped in brackets and separated by commas: (p1),(p2)
  select sdo_geometry('MULTILINESTRING((1 1 1, 2 2 2),(3 3 3, 4 4 4))')    as shape from dual union all --3D: (X,Y,Z)
  select sdo_geometry('MULTILINESTRING((5 5, 6 6),(7 7, 8 8),(9 9, 0 0))') as shape from dual union all --2D: (X,Y)
  select sdo_geometry('MULTILINESTRING((1 1, 2 2))')                       as shape from dual           --2D: (X,Y)
      )
  select
      a.object_value,
      sdo_util.to_wktgeometry(a.object_value)
  from
      cte,
      table(sdo_util.extract_all(shape)) a
  
  OBJECT_VALUE         SDO_UTIL.TO_WKTGEOMETRY(A.OBJECT_VALUE)                                         
  -------------------- ---------------------------------------
  [MDSYS.SDO_GEOMETRY] LINESTRING (1.0 1.0 1.0, 2.0 2.0 2.0)                                           
  [MDSYS.SDO_GEOMETRY] LINESTRING (3.0 3.0 3.0, 4.0 4.0 4.0)                                           
  [MDSYS.SDO_GEOMETRY] LINESTRING (5.0 5.0, 6.0 6.0)                                                   
  [MDSYS.SDO_GEOMETRY] LINESTRING (7.0 7.0, 8.0 8.0)                                                   
  [MDSYS.SDO_GEOMETRY] LINESTRING (9.0 9.0, 0.0 0.0)                                                   
  [MDSYS.SDO_GEOMETRY] LINESTRING (1.0 1.0, 2.0 2.0)
  

  db<>fiddle here

  ---

  I want to add the following columns to the query:

  • MULTILINE_NUM (the original multi-part line number)
  • PART_NUM

  MULTILINE_NUM PART_NUM OBJECT_VALUE         SDO_UTIL.TO_WKTGEOMETRY(A.OBJECT_VALUE)                               
  
  ------------- -------- -------------------- ---------------------------------------
              1        1 [MDSYS.SDO_GEOMETRY] LINESTRING (1.0 1.0 1.0, 2.0 2.0 2.0)                                           
              1        2 [MDSYS.SDO_GEOMETRY] LINESTRING (3.0 3.0 3.0, 4.0 4.0 4.0)                                           
              2        1 [MDSYS.SDO_GEOMETRY] LINESTRING (5.0 5.0, 6.0 6.0)                                                   
              2        2 [MDSYS.SDO_GEOMETRY] LINESTRING (7.0 7.0, 8.0 8.0)                                                   
              2        3 [MDSYS.SDO_GEOMETRY] LINESTRING (9.0 9.0, 0.0 0.0)                                                   
              3        1 [MDSYS.SDO_GEOMETRY] LINESTRING (1.0 1.0, 2.0 2.0)
  

  When adding those columns, I don't want to "fake it" after-the-fact using window functions, etc.

  I want to extract that information directly from the geometries, to ensure the numbers are correct (i.e., part number shouldn't be arbitrary; it should reflect the part number order from the original geometry).

  ---

  Is there a way to get the MULTILINE_NUM and PART_NUM from the table(sdo_util.extract_all(shape)) query?