I would like to replace a value Test to Mess in Column A in a table T where the value is Var in Column B in the same table.
Please someone help me with the query as I'm new to Oracle.
This is very easy, try this:
UPDATE t
SET A = REPLACE(A, 'Test', 'Mess')
WHERE B = 'Var';
or if You want not replace, but full text update in A column, you can make like this :
UPDATE t
SET A = 'Mess'
WHERE B = 'Var' and A = 'Test';
Related
First of all, I am using plsql, and adapting an existing command. I probably would have done it differently from scratch.
I want to do something of this kind, but this doesn't work.
UPDATE TABLE_NAME
SET COLUMN1 = FUNCTION1(...)
, COLUMN2 = FUNCTION2(..., COLUMN1)
;
Ideally, I would like to avoid doing this
UPDATE TABLE_NAME
SET COLUMN1 = FUNCTION1(...)
, COLUMN2 = FUNCTION2(..., FUNCTION1(...))
;
Is there any way of achieving this, maybe by storing the computed value for COLUMN1 into a variable?
For example, in C, something like this would be possible.
COLUMN1 = VARIABLE_NAME = FUNCTION1(...)
Or maybe by positionally referring to it? This syntax doesn't work, but I have a vague idea that it might be possible.
UPDATE TABLE_NAME
SET COLUMN1 = FUNCTION1(...)
, COLUMN2 = FUNCTION2(..., {1})
;
Thanks.
If you are doing this in PL/SQL then you can call the functions, assigned the return value to variables and then use those variables to update the table. Like:
lv_col1 := function1(...);
lv_col2 := function2(...,lv_col1);
update table
set column1 = lv_col1,
column2 = lv_col2
This way you don't have to call the function1 multiple times.
Using query_parameters, how can I:
specify a result column name (ex: summarize ResultColumnName = count())
specify the value of a bin, when value is actually the name of a column in the table
This is easiest to summarize with an example:
let myTable = datatable (Timestamp:datetime)
[datetime(1910-06-11),
datetime(1930-01-01),
datetime(1997-06-25),
datetime(1997-06-25)];
let UntrustedUserInput_ColumnName = "MyCount"; // actually from query_parameters
let UntrustedUserInput_BinValue = "Timestamp"; // actually from query_parameters
let UntrustedUserInput_BinRoundTo = "365d"; // actually from query_parameters
// the query I really want to perform
myTable
| summarize MyCount=count() by bin(todatetime(Timestamp), totimespan(365d));
// what the query looks like if I use query_parameters
myTable
| summarize UntrustedUserInput_ColumnName=count() by bin(todatetime(UntrustedUserInput_BinValue), totimespan(UntrustedUserInput_BinRoundTo));
Results:
Timestamp MyCount
--------- -------
1909-09-26T00:00:00Z 1
1929-09-21T00:00:00Z 1
1996-09-04T00:00:00Z 2
Column1 UntrustedUserInput_ColumnName
------- -----------------------------
4
I can't find a solution to #1.
It appears #2 can almost be solved by using column_ifexists, but I don't have a "default" to fall back on, I'd rather just fail if the column doesn't exist.
Treating column names as variables is not possible since columns names are part of the result schema coming out of each operator (with the exception of the "evaluate" operator, see specifically the pivot plugin).
There actually is a way to set variable names to a column, using a hacky trick:
let VariableColumnName = "TestColumn"; // the new column name that you want
range i from 1 to 5 step 1 // this is just a sample query
| project pack(VariableColumnName, i) // this created a JSON
| evaluate bag_unpack(Column1) // unpacking the JSON creates a column with a dynamic name
This will return a column named TestColumn, which is set in VariableColumnName.
I am just starting to work with openedge and I need to join information from two tables but I just need the first row from the second one.
Basically I need to do a typical SQL Cross Apply but in progress. I look in the documentation and the Statement FETCH FIRST 10 ROWS ONLY only in OpenEdge 11.
My query is:
SELECT * FROM la_of PUB.la_ofart ON la_of.empr_cod = la_ofart.empr_cod
AND la_of.Cod_Ordf = la_ofart.Cod_Ordf
AND la_of.Num_ordex = la_ofart.Num_ordex AND la_of.Num_partida = la_ofart.Num_partida
CROSS APPLY (
SELECT TOP 1 ofart.Cod_Ordf AS Cod_Ordf_ofart ,
ofart.Num_ordex AS Num_ordex_ofart
FROM la_ofart AS ofart
WHERE ofart.empr_cod = la_ofart.empr_cod
AND ofart.Num_partida = la_ofart.Num_partida
AND la_ofart.doc1_num = ofart.doc1_num
AND la_ofart.doc2_linha = ofart.doc2_linha
ORDER BY ofart.Cod_Ordf DESC) ofart
I am using SSMS to extract data from OE10 using an ODBC connector and querying to OE using OpenQuery.
Thanks for all help.
If I correctly understood your question, maybe you can use something like this. Maybe this isn't the best solution for your problem, but may suit your needs.
DEF BUFFER ofart FOR la_ofart.
DEF TEMP-TABLE tt-ofart NO-UNDO LIKE ofart
FIELD seq AS INT
INDEX ch-seq
seq.
DEF VAR i-count AS INT NO-UNDO.
EMPTY TEMP-TABLE tt-ofart.
blk:
FOR EACH la_ofart NO-LOCK,
EACH la_of NO-LOCK
WHERE la_of.empr_cod = la_ofart.empr_cod
AND la_of.Cod_Ordf = la_ofart.Cod_Ordf
AND la_of.Num_ordex = la_ofart.Num_ordex
AND la_of.Num_partida = la_ofart.Num_partida,
EACH ofart NO-LOCK
WHERE ofart.empr_cod = la_ofart.empr_cod
AND ofart.Num_partida = la_ofart.Num_partida
AND ofart.doc1_num = la_ofart.doc1_num
AND ofart.doc2_linha = la_ofart.doc2_linha
BREAK BY ofart.Cod_Ordf DESCENDING:
ASSIGN i-count = i-count + 1.
CREATE tt-ofart.
BUFFER-COPY ofart TO tt-ofart
ASSIGN ofart.seq = i-count.
IF i-count >= 10 THEN
LEAVE blk.
END.
FOR EACH tt-ofart USE-INDEX seq:
DISP tt-ofart WITH SCROLLABLE 1 COL 1 DOWN NO-ERROR.
END.
Am trying to create pivot table by using Auto it tool, can anyone help to complete this code,need to add field in Columns , Rows and Value
below code just adding field in Filters
$oExcel = ObjCreate("Excel.Application")
$oExcel.Visible = 1
$oExcel.WorkBooks.Open ("C:\AR\Deptwise AR-20.03.2017.xlsx")
$test = $oExcel.ActiveWorkbook.PivotCaches.Create(1,"A1:Y11795",1)
$oExcel.Sheets.Add
$test2 = $oExcel.Range("A1:Y11795")
$oExcel.ActiveSheet.PivotTables.Add($test,$test2,"GCI")
$oExcel.Application.ActiveSheet.PivotTables("GCI").PivotFields("GCI").Orientation = 3
$oExcel.ActiveSheet.PivotTables ("PivotTable5" ).PivotCache.Refresh
How can I get a single row result (e.g. in form of a table/array) back from a sql statement. Using Lua Sqlite (LuaSQLite3). For example this one:
SELECT * FROM sqlite_master WHERE name ='myTable';
So far I note:
using "nrows"/"rows" it gives an iterator back
using "exec" it doesn't seem to give a result back(?)
Specific questions are then:
Q1 - How to get a single row (say first row) result back?
Q2 - How to get row count? (e.g. num_rows_returned = db:XXXX(sql))
In order to get a single row use the db:first_row method. Like so.
row = db:first_row("SELECT `id` FROM `table`")
print(row.id)
In order to get the row count use the SQL COUNT statement. Like so.
row = db:first_row("SELECT COUNT(`id`) AS count FROM `table`")
print(row.count)
EDIT: Ah, sorry for that. Here are some methods that should work.
You can also use db:nrows. Like so.
rows = db:nrows("SELECT `id` FROM `table`")
row = rows[1]
print(row.id)
We can also modify this to get the number of rows.
rows = db:nrows("SELECT COUNT(`id`) AS count FROM `table`")
row = rows[1]
print(row.count)
Here is a demo of getting the returned count:
> require "lsqlite3"
> db = sqlite3.open":memory:"
> db:exec "create table foo (x,y,z);"
> for x in db:urows "select count(*) from foo" do print(x) end
0
> db:exec "insert into foo values (10,11,12);"
> for x in db:urows "select count(*) from foo" do print(x) end
1
>
Just loop over the iterator you get back from the rows or whichever function you use. Except you put a break at the end, so you only iterate once.
Getting the count is all about using SQL. You compute it with the SELECT statement:
SELECT count(*) FROM ...
This will return one row containing a single value: the number of rows in the query.
This is similar to what I'm using in my project and works well for me.
local query = "SELECT content FROM playerData WHERE name = 'myTable' LIMIT 1"
local queryResultTable = {}
local queryFunction = function(userData, numberOfColumns, columnValues, columnTitles)
for i = 1, numberOfColumns do
queryResultTable[columnTitles[i]] = columnValues[i]
end
end
db:exec(query, queryFunction)
for k,v in pairs(queryResultTable) do
print(k,v)
end
You can even concatenate values into the query to place inside a generic method/function.
local query = "SELECT * FROM ZQuestionTable WHERE ConceptNumber = "..conceptNumber.." AND QuestionNumber = "..questionNumber.." LIMIT 1"