Still didnt fix issue with dates written as strings here comes another problem.
I have text column where only numbers as writen (like text).
By using function MAX I get incorrect result because there 9 is bigger than 30.
Is here any inline function like VAL or CINT or something that I can compare and use textual data (only numbers) like numbers in queries like SELECT, MAX and other similar?
How than can look like in following examples:
mCmd = New OdbcCommand("SELECT MAX(myTextColumn) FROM " & myTable, mCon)
You need to use max(to_number(myTextColumn, '999999'))
More details are in the manual: http://www.postgresql.org/docs/current/static/functions-formatting.html
If all "numbers" are integers, you can also use the cast operator: max(myTextColumn::int)
If your text values are properly formatted you can simply cast them to double, e.g.: '3.14'::numeric.
If the text is not formatted according to the language settings you need to use to_number() with a format mask containing the decimal separator: to_number('3.14', '9.99')
To get the MAX works poterly you need to first convert your text field in numeric format
mCmd = New OdbcCommand("SELECT MAX(TO_NUMBER(myTextColumn, '99999')) FROM " & myTable, mCon)
Related
I wrote a code that automatically pulls time-related information from the system. As indicated in the table is fixed t247 Month names to 10 characters in length. But it is a bad image when showing on the report screen.
I print this way:
WRITE : 'Bugün', t_month_names-ltx, ' ayının'.
CONCATENATE gv_words-word '''nci günü' INTO date.
CONCATENATE date ',' INTO date.
CONCATENATE date gv_year INTO date SEPARATED BY space.
TRANSLATE date TO LOWER CASE.
I tried the CONDENSE t_month_names-ltx NO-GAPS. method to delete the spaces, but it was not enough.
After WRITE, I was able to write statically by setting the blank value:
WRITE : 'Bugün', t_month_names-ltx.
WRITE : 14 'ayının'.
CONCATENATE gv_words-word '''nci günü' INTO date.
CONCATENATE date ',' INTO date.
CONCATENATE date gv_year INTO date SEPARATED BY space.
TRANSLATE date TO LOWER CASE.
But this is not a correct use. How do I achieve this dynamically?
You could use a temporary field of type STRING:
DATA l_month TYPE STRING.
l_month = t_month_names-ltx.
WRITE : 'Bugün', l_month.
WRITE : 14 'ayının'.
CONCATENATE gv_words-word '''nci günü' INTO date.
CONCATENATE date ',' INTO date.
CONCATENATE date gv_year INTO date SEPARATED BY space.
TRANSLATE date TO LOWER CASE.
You can not delete trailing spaces from a TYPE C field, because it's of constant length. The unused length is always filled with spaces.
But after you assembled you string, you can use CONDENSE without NO-GAPS to remove any chains of more than one space within the string.
Add CONDENSE date. below the code you wrote and you should get the results you want.
Another option is to abandon CONCATENATE and use string templates (string literals within | symbols) for string assembly instead, which do not have the annoying habit of including trailing spaces of TYPE C fields:
DATA long_char TYPE C LENGTH 128.
long_char = 'long character field'.
WRITE |this is a { long_char } inserted without spaces|.
Output:
this is a long character field inserted without spaces
I am working in MATLAB and trying to add units to the Column headers to a table of values then I will insert into SQLite Database but I have a column names of German characters (e.g 'ß', 'ä'), but this is invalid because of the special characters. According to everything I've found thus far has said that column headers must be valid variable names, e.g. alphanumeric and "_" only.
But I can not change my original database column names so does anyone know of a work-around it?
My code of building a table and sending into database is:
insertData = cell2table(full_matrix,'VariableNames',colnames);
insert(conn,tableName,colnames,insertData);
And some of my column names:
'maß','kapazität', 'räder'
Thank you very much for helping.
Do you have to create the table first? I would try just passing the cell array of data directly to insert like so:
insert(conn, tableName, colnames, full_matrix);
The above assumes that it is the cell2table call that is giving you an error related to the special characters. If it's the insert call, then I guess MATLAB won't let you create databases with column names that don't conform to its variable naming conventions. If that's the case, you'll have to convert the column names to something valid, which you can do with either genvarname (for older MATLAB versions) or matlab.lang.makeValidName (suggested for versions R2014a and newer):
colNames = {'maß','kapazität', 'räder'};
validNames = genvarname(colNames);
% or...
validNames = matlab.lang.makeValidName(colNames, 'ReplacementStyle', 'hex');
validNames =
1×3 cell array
'ma0xDF' 'kapazit0xE4t' 'r0xE4der'
Note that the above solutions replace the invalid characters with their hex equivalents. You could also change the 'ReplacementStyle' to replace them with underscores or delete them altogether. I would go with the hex values because it gives you the option of converting the column names back to their original string values if you need those for anything later. Here's how you could do that using regexprep, hex2dec, and char:
originalNames = regexprep(validNames, '0x([\dA-F]{2})', '${char(hex2dec($1))}');
originalNames =
1×3 cell array
'maß' 'kapazität' 'räder'
i am facing issue while converting unicode data into national characters.
When i convert the Unicode data into national using national-of function, some junk character like # is appended after the string.
E.g
Ws-unicode pic X(200)
Ws-national pic N(600)
--let the value in Ws-Unicode is これらの変更は. getting from java end.
move function national-of ( Ws-unicode ,1208 ) to Ws-national.
--after converting value is like これらの変更は #.
i do not want the extra # character added after conversion.
please help me to find out the possible solution, i have tried to replace N'#' with space using inspect clause.
it worked well but failed in some specific scenario like if we have # in input from user end. in that case genuine # also converted to space.
Below is a snippet of code I used to convert EBCDIC to UTF. Before I was capturing string lengths, I was also getting # symbols:
STRING
FUNCTION DISPLAY-OF (
FUNCTION NATIONAL-OF (
WS-EBCDIC-STRING(1:WS-XML-EBCDIC-LENGTH)
WS-EBCDIC-CCSID
)
WS-UTF8-CCSID
)
DELIMITED BY SIZE
INTO WS-UTF8-STRING
WITH POINTER WS-XML-UTF8-LENGTH
END-STRING
SUBTRACT 1 FROM WS-XML-UTF8-LENGTH
What this code does is string the UTF8 representation of the EBCIDIC string into another variable. The WITH POINTER clause will capture the new length of the string + 1 (+ 1 because the pointer is positioned to the next position after the string ended).
Using this method, you should be able to know exactly how long second string is and use that string with the exact length.
That should remove the unwanted #s.
EDIT:
One thing I forgot to mention, in my case, the # signs were actually EBCDIC low values when viewing the actual hex on the mainframe
Use inspect with reverse and stop after first occurence of #
I had a quick question, how can I go about using SUBSTRING on an integer? I currently have field labeled "StoreID" that contains a 5 digit integer (60008). I am trying to use SUBSTRING to remove the 6 when I query out this information. When I use something like:
SUBSTRING('StoreID', 2, 6)
I get an error returning back saying that SUBSTRING(integer,integer,integer) does not exist.
Is there another function I can use in postgres to accomplish what I am trying to do?
You can cast the integer
SUBSTR(cast (StoreId as text), 2,6)
If you are interested in the number 8, use the modulo operator %
SELECT 60008%10000
If you want the string '0008', the function right() is right for you (added with Postgres 9.1):
SELECT right(60008::text, -1)
Or with modulo and to_char():
SELECT to_char(60008%10000, 'FM0000')
The FM modifier removes space padding.
I want to convert int to string and then concatenate dot with it. Here is the formula
totext({#SrNo})+ "."
It works perfectly but not what i want. I want to show at as
1.
but it shows me in this way
1.00.
it means that when i try to convert int to string it convert it into number with precision of two decimal zeros. Can someone tell me how can i show it in proper format. For information i want to tell you that SrNo is running total.
ToText(x, y, z, w) Function can use
x=The number to convert to text
y=The number of decimal places to include in result (optional). The value will be rounded to that decimal place.
z=The character to use as the thousands separator. If you don’t specify one, it will use your application default. (Optional.)
w=The character to use as the decimal separator. If you don’t specify one, it will use your application default. (Optional.)
Examples
ToText(12345.678) = > “12345.678″
ToText(12345.678,2) = > “12345.67″
ToText(12345.678,0) = > “12345″
You can try this :
totext({fieldname},0)
Ohhh I got the answer it was so simple.
totext takes 4 parameters
First parameter is value which is going to be converted
Second parameter is number of decimal previsions.
Third parameter is decimal separator. like (1,432.123) here dot(.) is third parameter.
Forth parameter is thousand separator. like (1,432) here comma(,) is forth parameter.
Example{
totext("1,432.1234",2) results 1,432.12
totext("1,432.1234",2,' " ') results 1,432"1234
totext("1,432.1234",2,' " ', ' : ') results 1:432,1234
}
Although i think this example may be not so good but i just want to give you an idea. This is for int conversion for date it has 2 parameters.
value to be converted and format of date.