Data types related to incrementing a query column value

ColdFusion: 9.0.1
Server OS: Windows 7
Web Server: Apache 2.2.21
Database: SQL Server Express
I have been returning numeric values from the database for a while. Some I have left as straight values and some I have used in other calculations. Not sure if this is related, but after upgrading to ColdFusion 9.0.1 I experienced an unexpected data conversion (at least that seems to be what is happening). I am returning a value from a database (column datatype is integer) and incrementing it by 1.
Code:
<cfquery name="qry" datasource="DATASOURCE">
SELECT MAX(Number)
FROM MyTable
</cfquery>
<cfset myNumber = qry.Number + 1 />
I am expecting this to return a whole number (integer). However, it seems that I am getting a double now. This I discovered by dumping out the suspect variable's class:
Code:
<cfdump var="#myNumber.getClass()#" />
I was able to fix the issue by converting the variable to an integer using javaCast(), but I am wondering if this is a change/issue with ColdFusion 9.0.1 or something else, because this has worked just fine before.

I doubt the behavior is new. CF usually converts to "double" implicitly whenever you apply mathematical operations (+,-, *, ...). So I am not sure what effect that has on your code. Can you elaborate?
SELECT MAX(Number)
As an aside, I am not sure what the code is doing exactly but SELECT MAX(...) is not inherently thread safe. Is there a reason you need to do this manually as opposed to using an auto-incrementing identity column?
-Leigh

Similar Messages

Regarding data type related to roman no

hi ,
i have created a z table named as zstudent. In that i hve one field name as zstandard which should contain only roman numbers from I TO X (1ST TO 10 TH ) class .hw can i do this .wen i creating entries on that table it should restrict to only roman numbers.is there any data type related to roman numbers
thanks in advance
Nandini.p
points will be rewarded if useful.

Why don't you simply maintain a regular integer or even a numeric value in your internal table and then output the appropriate Roman numeral using CASE...ENDCASE when you need to use it?
Or if you don't have that many, then create a series of constants and use those.
Regards
Kurt

"Schema validation found non-data type errors" error when passing a string value to date field in infopath

Hi,
I have an infopath web brower enabled form. In the form i have a date field.
I am passing the data from the database to that field using the C# code.
But, as the field from database is coming as string, i am getting an error, and i am not able to assign the value.
I get the date value from database as "3/25/2011 12:00:00 AM"
I used the below code:
[CODE]
if (objInfopathFormcData.myRecievedDate != null)
myRoot.SelectSingleNode("/my:myFields/my:field97", NamespaceManager).SetValue(objInfopathFormcData.myRecievedDate);
[/CODE]
I am getting the error as "Schema validation found non-data type errors".
How to set the value for a date field in Infopath.
Thank you

HI,
I fixed it:
Below code is used to fix:
[CODE]
XPathNavigator xfield = null;
DateTime dtmyRecievedDate;
dtmyRecievedDate = Convert.ToDateTime(objInfopathFormcData.myRecievedDate);
if (objFormcData.FcCompletionDate != null)
xfield = myRoot.SelectSingleNode("/my:myFields/my:field97", NamespaceManager);
DeleteNil(xfield);
xfield.SetValue(dtmyRecievedDate.GetDateTimeFormats().GetValue(5).ToString());
// method to delete xsi:nil
private void DeleteNil(XPathNavigator nav1)
if (nav1.MoveToAttribute("nil", "http://www.w3.org/2001/XMLSchema-instance"))
nav1.DeleteSelf();
[/CODE]
Thank you

The conversion of a varchar data type to a datetime data type resulted in an out-of-range value

I am trying to insert records into a temporary table with date values concatenated with other string values into one large string value.I am getting the following error:
Msg 242, Level 16, State 3, Line 12
The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.
Msg 241, Level 16, State 1, Line 28
Conversion failed when converting date and/or time from character string.
-My code below
Declare
    @hdrLOCAL char(255),
   @CR char(255),
   @BLDCHKDT DATETIME,
   @BLDCHTIME DATETIME,
   @hdrline int
   SELECT @hdrLOCAL = DDLINE FROM DD40400 WHERE INDXLONG =1
   SELECT @CR = DDLINE FROM DD40400 WHERE INDXLONG =2
   SELECT @hdrline =1
   SELECT
           @BLDCHKDT = CONVERT(varchar(20),T756.PAYDATE,105) ,
           -- convert(varchar,getdate(),15)
           @BLDCHTIME= CONVERT(varchar(20),T756.PAYDATE,105)
           FROM STATS.dbo.DD10500 T762
           LEFT OUTER JOIN STATS.dbo.DD10400 T756 ON (
                   T762.INDXLONG = T756.INDXLONG
                   AND T756.INCLPYMT = 1
           WHERE (T756.INCLPYMT = 1)
               AND (T762.DDAMTDLR <> 0)
Create TABLE [dbo].[##DD10200B](
   [INDXLONG] [int] NOT NULL,
   [DDLINE] [varchar](8000) NOT NULL,
   [DEX_ROW_ID] [int] IDENTITY(1,1) NOT NULL,
BEGIN
INSERT INTO ##DD10200B (INDXLONG,DDLINE)
       VALUES (1,@hdrLOCAL +',' + @CR +','+ @BLDCHKDT +',' + @BLDCHTIME )
END
Msg 242, Level 16, State 3, Line 12
The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.
Msg 241, Level 16, State 1, Line 28
Conversion failed when converting date and/or time from character string.
The Best thing in Life is Life

Since the Variable
BLDCHKDT and BLDCHTIME are of type date time why are you trying to assign it a value
of type varchar
and the format 105 gives you dd-mm-yyyy but SQL server takes the default format as mm-dd-yyyy so the error occurs for all dates that
are greater than 12
try the below code
Declare
@hdrLOCAL char(255),
@CR char(255),
@BLDCHKDT Varchar(50),
@BLDCHTIME Varchar(50),
@hdrline int
SELECT @hdrLOCAL = DDLINE FROM DD40400 WHERE INDXLONG =1
SELECT @CR = DDLINE FROM DD40400 WHERE INDXLONG =2
SELECT @hdrline =1
SELECT
@BLDCHKDT = CONVERT(varchar(20),T756.PAYDATE,105) ,
-- convert(varchar,getdate(),15)
@BLDCHTIME= CONVERT(varchar(20),T756.PAYDATE,105)
FROM STATS.dbo.DD10500 T762
LEFT OUTER JOIN STATS.dbo.DD10400 T756 ON (
T762.INDXLONG = T756.INDXLONG
AND T756.INCLPYMT = 1
WHERE (T756.INCLPYMT = 1)
AND (T762.DDAMTDLR <> 0)
Create TABLE [dbo].[##DD10200B](
[INDXLONG] [int] NOT NULL,
[DDLINE] [varchar](8000) NOT NULL,
[DEX_ROW_ID] [int] IDENTITY(1,1) NOT NULL,
BEGIN
INSERT INTO ##DD10200B (INDXLONG,DDLINE)
VALUES (1,@hdrLOCAL +',' + @CR +','+ @BLDCHKDT +',' + @BLDCHTIME )
END
the only change done is
@BLDCHKDT Varchar(50),
@BLDCHTIME Varchar(50),
Surender Singh Bhadauria
My Blog

The conversion of a nvarchar data type to a datetime data type resulted in an out-of-range value.

Below select statement results in "The conversion of a nvarchar data type to a datetime data type resulted in an out of range value" error. By the way Terms
field's data type is nvarchar
SELECT * from INVOICE
where convert(datetime,Terms)
BETWEEN
'01/01/14'
and
'01/30/15'

If you can't use TRY_CONVERT (It's only available in 2012+) You should be able to validate the data with something like this (based on your example date formats):
DECLARE @notDate TABLE (Terms NVARCHAR(10))
INSERT INTO @notDate (Terms) VALUES
('01/01/14'),('02/29/14'),('01/32/15'),('13/13/14'),('13/3/14'),('13-13/14'),('02/29/12'),('02/29/13')
SELECT *,
CASE WHEN (LEN(Terms) - 2) <> LEN(REPLACE(Terms,'/','')) OR LEN(Terms) <> 8 THEN 'Bad Form'
WHEN LEFT(Terms,2) > 12 THEN 'Bad Month'
WHEN LEFT(Terms,2) IN (9,4,6,11) AND LEFT(RIGHT(Terms,5),2) > '30' THEN 'Bad Day'
WHEN LEFT(Terms,2) = 2 AND LEFT(RIGHT(Terms,5),2) > (28 + CASE WHEN (2000+RIGHT(Terms,2)) % 400 = 0 THEN 1 WHEN (2000+RIGHT(Terms,2)) % 100 = 0 THEN 0 WHEN (2000+RIGHT(Terms,2)) % 4 = 0 THEN 1 ELSE 0 END) THEN 'Bad Day'
WHEN LEFT(Terms,2) NOT IN (2,9,4,6,11) AND LEFT(RIGHT(Terms,5),2) > '31' THEN 'Bad Day'
END
FROM @notDate
Don't forget to mark helpful posts, and answers. It helps others to find relevant posts to the same question.

How to create a Type Object with Dynamic select query columns in a Function

Hi Every One,
I'm trying to figure out how to write a piplined function that executes a dynamic select query and construct a Type Object in order to assigned it to the pipe row.
I have tried by
SELECT a.DB_QUERY INTO actual_query FROM mytable a WHERE a.country_code = 'US';
c :=DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(c,actual_query,DBMS_SQL.NATIVE);
l_status := DBMS_SQL.EXECUTE(c);
DBMS_SQL.DESCRIBE_COLUMNS(c, col_cnt, rec_tab);
FOR j in 1..col_cnt LOOP
DBMS_SQL.DEFINE_COLUMN(c,j,v_val,2000);
END LOOP;
FOR j in 1..col_cnt LOOP
DBMS_SQL.COLUMN_VALUE(c,j,v_val);
END LOOP;
But got stuck, how to iterate the values and assign to a Type Object from the cursor. Can any one guide me how to do the process.
Thanks,
mallikj2

Hi Justin,
First of thanks for your reply, and coming to my requirement, I need to report the list of items which are there in the dynamic select statement what am getting from the DB. The select statement number of columns may vary in my example for different countries the select item columns count is different. For US its '15', for UK it may be 10 ...like so, and some of the column value might be a combination or calculation part of other table columns (The select query contains more than one table in the from clause).
In order to execute the dynamic select statement and return the result i choose to write a function which will parse the cursor for dynamic query and then iterate the values and construct a Type Object and append it to the pipe row.
Am relatively very new for these sort of things, welcome in case of any suggestions to make it simple (Instead of the function what i thought to work with) also a sample narrating the new procedure will be appreciated.
Thanks in Advance,
mallikj2.

Why does data type change if "increment" function added?

I have a state machine with a shift register coupling data between states. In an early state I connect an I32 constant to the data path which causes the data path to take on an I32 type. In a later state I insert an increment (+1) function and the data path changes to a DOUBLE type. Why? I can insert an I32 conversion before or after the +1 function and the data path remains or is converted back to I32 type.

It is good programming practice to initialize your variables, be that in C/C++, VB, etc. Likewise, the reason I say you should always initialize your shift register is so that when your VI runs, you know that it starts at your initialized value and not something else.
There will be times when your shift register will start at a previously defined value and you get intermittent problems. It's similar to creating data dependencies in LabVIEW. It's not required but it's good programming practice to have some form of dataflow, be that for troubleshooting or debugging. And yes, there are times (not a whole lot), where you cannot create data dependencies but at times like this, you'll need to make sure you can safely say, I am very sure that this VI wi
ll run before this VI will. Likewise, by initializing a shift register, I can safely say that my loop will always start with 0.
Sorry but I get defensive at times... Gorka is right about how the data type changes. You can changet the data type by changing the representation by right clicking on the shift register.
Shan Pin Koh

Can we change the data type of a field based on the value of the field

HI Gurus,
My Requirement is as below -- Could you please guide me
in the Printable Adobe form -- for ex - as usual for dates fields in the Object Pallette the object type is a date/time field and for quantity/currency fields corresponding fields are taken
now in case the either the date, quantity or currency is initial in place of displaying 0.00 or empty date we need to display N/A (Not Applicable)
for this I would like to change the data type of the field
to put it simply --
we need to change the data type of date field from DATE&TIME to Char type to hold N/A or Quantity field to Char field to hold N/A
how can we realize this in SAP adobe forms
Thanks in Advace
Ramchander Rao.K

Hello Ramchander,
     You cannot change the data type of the field at run time in Adobe forms because the type of field you choose at the time of design level is associated with the data type itself.
If you want to achieve your requirement, then your main idea should be to set the data type as CHARACTER itself while designing the field in the adobe form itself. CHAR field will comfortably hold the value of Calculation/amount field, Currency field, Amount, Date, Time HHMMSS, Unit Accuracy, Currency key, Floating point number, Numeric text, Client, Language and many other data types.
After designing the field as TEXT field in Adobe form you have two options.
Option 1:
Select the Date field initially as type TEXT field or CHAR field in Adobe forms.
Suppose the name of the field is TEXTFIELD1, then write the Javascript code on this field in Initialize event as below.
if ( this.rawvalue == null )
     this.rawvalue = "N/A";
If the field is not blank, then it will show the date. Else it will show "N/A".
Option 2:
Select the Date field initially as type TEXT field or CHAR field in Adobe forms. Do the formatting part in ABAP itself. It will increase the performance. Avoid Javascript as much as possible.
Suppose you have a DATE variable l_dats of type DATS. Then take another variable l_date of type CHAR. Then write the below ABAP code.
MOVE l_dats TO l_date.
IF l_date IS INITIAL.
     l_date = 'N/A'.
ENDIF.
Bind the l_date to the TEXT field in the form.
Even in this case, if the field is not blank, then it will show the date. Else it will show "N/A".
But I will suggest you to use Option 2 of keeping the AMOUNT, QUANTITY, DATE, TIME fields etc as CHAR or TEXT fields in Adobe form and do the required formatting in ABAP itself.

The data type of "output column "Cookies" (7371)" does not match the data type "System.Int32" of the source column "Cookies"

I have the following data flow:
ADO Source
Input Column: Cookies ID: 7371      Datatype: DT_NUMERIC
Output Column: Cookies     ID: 7391      Datatype: DT_NUMERIC
DATA CONVERSION TASK
Input Column: Cookies       ID: 1311     Datatype: DT_NUMERIC
Output Column: Copy of Cookies   ID: 1444    Datatype: DT_I4
SQL Server Destination
Input Column: Copy of Cookies    ID: 8733    Datatype: DT_I4
Output Column: Cookies       ID: 8323     Datatype: DT_I4
This looks fine to me. Why am I getting the error?
This is SQL Server 2008 and I am working at this point only in BIDS, so it is not a question of dev vs prod server or anything. One environment, running in BIDS. Other similar data flows seems to be working ok. It seems the error is referring to a datatype
mismatch in the source--but how can that be?
Thanks!

Actually, I am wrong in that Visakh. I think you are correct.
There are two versions of all tables, one with 15 minute rollups and one with daily rollups. Otherwise the tables are the same--same exact fields. I use a loop with a data flow inside to get data from one version of the rollup and then the other.
The problem is, for some of the fields with larger values the datatype is NUMERIC instead of INTEGER. (This is Cache database). SO:
dailyCookies:   Field: CountOne   Datatype: NUMERIC
15minCookies:   Field: CountOne   Datatype: INTEGER
A variable dynamically creates the query so it appends "daily" or "15min" to the beginning of the tables. So on the first loop it does the 15min tables and on the second the daily tables. When I created this particular table I have to plug a default query
in so I used the daily. It picked up the datatype as NUMERIC so when I run the package it loops through 15min first and sees the datatype is INTEGER.
How to deal with this? I suppose I could convert the datatype in the source query, but that would be a hassle to do that for some fields and not others. This tables has hundreds of fields, BTW. Can one source object deal with a change of datatypes? SSIS
is so picky on datatypes compared to other tools....
Thanks,

Query column value as attribute for an element

I want to select out a column to be an attribute for an element in my XML file. I know that if I use "@column_name" I will get an attribute but it will be for the row's element. In this case I don't want. In my example below I want a column called DATE_TYPE to be the attribute for the column DATE that is an element. How would I do this? If I select out @DATE_TYPE I get it as an attribute of the <element1> node.
<element1>
<element2>VALUE</element2>
<date>2003-09-02</date>
</element1>

As Darrin said, it just matters which element is considered the "active" element. So in your second example, you actually wrote to it a 3 and then a 1 (classic race condition). You can set the active element with a property of the array (having trouble finding it at the moment).
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Using sql bulk copy throwing exception -The given value of type String from the data source cannot be converted to type int of the specified target column

Hi All,
I am reading notepads files and inserting data in sql tables from the notepad-
while performing sql bulk copy on this line it throws exception - "bulkcopy.WriteToServer(dt); -"data type related(mentioned in subject )".
Please go through my logic and tell me what to change to avoid this error -
public void Main()
Dts.TaskResult = (int)ScriptResults.Success;
string[] filePaths = Directory.GetFiles(@"C:\Users\jainruc\Desktop\Sudhanshu\master_db\Archive\test\content_insert\");
for (int k = 0; k < filePaths.Length; k++)
string[] lines = System.IO.File.ReadAllLines(filePaths[k]);
//table name needs to extract after = sign
string[] pathArr = filePaths[0].Split('\\');
string tablename = pathArr[9].Split('.')[0];
DataTable dt = new DataTable(tablename);
|
string[] arrColumns = lines[1].Split(new char[] { '|' });
foreach (string col in arrColumns)
dt.Columns.Add(col);
for (int i = 2; i < lines.Length; i++)
string[] columnsvals = lines[i].Split(new char[] { '|' });
DataRow dr = dt.NewRow();
for (int j = 0; j < columnsvals.Length; j++)
//Console.Write(columnsvals[j]);
if (string.IsNullOrEmpty(columnsvals[j]))
dr[j] = DBNull.Value;
else
dr[j] = columnsvals[j];
dt.Rows.Add(dr);
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Data Source=UI3DATS009X;" + "Initial Catalog=BHI_CSP_DB;" + "User Id=sa;" + "Password=3pp$erv1ce$4";
conn.Open();
SqlBulkCopy bulkcopy = new SqlBulkCopy(conn);
bulkcopy.DestinationTableName = dt.TableName;
bulkcopy.WriteToServer(dt);
conn.Close();
Issue 1:-
I am reading notepad: getting all column and values in my data table now while inserting for date and time or integer field i need to do explicit conversion how to write for specific column before bulkcopy.WriteToServer(dt);
Issue 2:- Notepad does not contains all columns nor in specific sequence in that case i can add few column ehich i am doing now but the issue is now data table will add my columns + notepad columns and while inserting how to assign in perticular colums?
sudhanshu sharma Do good and cast it into river :)

Hi,
I think you'll have to do an explicit column mapping if they are not in exact sequence in both source and destination.
Have a look at this link:
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlbulkcopycolumnmapping(v=vs.110).aspx
Good Luck!
Kaur.
Please mark as answer if this resolves your issue.

Column Data type for text more than 10000.

Hi,
Which data type is best suited for a column which will have a text length more than 10000. The text is simple english only.
Regards
Srini

HiTodd Barry,
The version i am using is 8.1.7.
What is the capacity of CLOB in terms of english characters. Documetation says it is 4 GB.But it does not talk about length of characters..When i am trying to insert simple english text of length of 10000, i am getting following error:
ERROR at line 1:
ORA-01704: string literal too long.
Even LONG datatype also can take up to 5000 only.
Can you suggest the best way to insert such a huge text..
Appreciate your response.
Regards
Srini

APEX 4.0 Report Query column limitation, 43 column maximum for the result!

Hi there,
I'm trying to generate report from Apex 4.0.1, but I got stucked with column limitation when I'm executing the report query.
Case:
Environment: oracle 11g, apex 4.0.1, oracle BI 11, windows xp
Table: My test table is quite simple, by creating a sample table with 44 columns, the column name is random, i.e. column1..column44, column data type is varchar2 (20)
report query:my report query is also simple, by "select * from testtable"
Ｄａｔａ: no data in my sample table
Ｅｒｒｏｒ：　then I'll get the error: "HelpORA-06502: PL/SQL: numeric or value error: character string buffer too small"
solution:　If I shrink the table column from 44 to 43, then the report can be generated to xls, pdf, etc.
Question: Is there any column limitation for Apex report query? I know there's a 32k row size limitation for varchar, but since there's no single data in my table, it shouldn't be the case.
Does anybody get this issue before? Thanks for any generous input!! :)
Horatio

hi marko,
Thanks for the reply, but i can't find the 45 column limitation from report query and report printing. any clue for this call?
Regards
Horatio

Reports with FLOAT data type

I am trying to create a simple report form from a table which contains a FLOAT data column.
I follow these steps:
New>Component>Report>Report with Form...
I end up with 2-pages: the report and the entry form to update/create a row. The key-column on the report page links to the entry-form page and all values from the selected report row carry-over to the entry-form for an update with the exception of the FLOAT column. This seems to be an issue with fetching the row values when the entry-form is loaded. The FLOAT values entered manually in the form are saved. This issue is related to the FLOAT data type. When I altered the column data type to NUMBER(10,2) the value on the entry-form started appearing.

200972,
Our automated row fetch module (used by wizard-generated form pages) recognizes only the NUMBER datatype for numbers. I'll log this as an enhancement request.
57434

Data types pls..

Hi All,
What are all the data types we have, let me know each data type purpose pls....
Akshitha.

Data types describe the technical attributes of data objects. They are purely descriptive and do not take up any memory space
Data Types in the ABAP Dictionary
The ABAP Dictionary allows you to define global data types. You can use the TYPE addition of an appropriate ABAP statement to refer to these data types in any ABAP program in the system.
There are three groups on the initial screen:
Database Tables and Views
One of the most important tasks of the ABAP Dictionary is to administer database tables in the R/3 database. The Dictionary contains metadescriptions of the database tables, and uses these to create the physical tables in the database. A view is a "virtual table" containing fields from one or more tables.
In the description of a database table, the table lines consist of single fields or columns. An elementary data type must be assigned to each column. The elementary types in the ABAP Dictionary are data elements. Like data objects in ABAP programs, database tables and views have data types as attributes. A line of a database table or view has the data type of a flat structure, which consists of individual data elements.
In ABAP programs, you can use the TYPE addition with the data type of a database table or view. You may refer to the whole structure or to individual components:
... TYPE <dbtab> ...
refers to the complex data type of the structure,
... TYPE <dbtab>-<ci> ...
refers to the elementary data type of component <ci>.
If you define a complex data type <t> as a structure using
TYPES <t> TYPE <dbtab>.
the components of the data type <t> inherit the names of the components of the database table or view, and can be addressed in the program using <t>-<ci>.
To ensure compatibility with previous releases, you can still use the LIKE addition to refer to database tables or views, except within classes. The reason for this is that in earlier releases, the physical presence of the database tables as objects was emphasized, even though the Dictionary only contains metadescriptions and data types.
Defining program-local data types by referring to database tables and views is one of the essential techniques for processing data from database tables in ABAP. Data objects that you define in this way always have the right type to contain data from the corresponding database table. ABAP Open SQL allows you to read a single field, a range of fields, or an entire database table or view into an internal table.
TYPES: city type spfli-cityfrom,
       spfli_type TYPE STANDARD TABLE OF spfli WITH DEFAULT KEY.
DATA: wa_city TYPE city,
      wa_spfli TYPE spfli_type.
SELECT SINGLE cityfrom FROM spfli
                       INTO wa_city
                       WHERE carrid = 'LH' AND connid = '400'.
SELECT * FROM spfli INTO TABLE wa_spfli.
This example defines an elementary data type CITY that refers to a single field of the database table SPFLI and an internal table SPFLI_TYPE, whose line type is the same as the structure of the database table. The SELECT statement reads data from the database into the corresponding data objects.
Data types
Data types are the actual type definitions in the ABAP Dictionary. They allow you to define elementary types, reference types, and complex types that are visible globally in the system. The data types of database tables are a subset of all possible types, namely flat structures. Global object types (classes and interfaces) are not stored in the ABAP Dictionary, but in the class library. You create them using the Class Builder.
For a detailed description of data types and their definitions, refer to the Types section of the ABAP Dictionary documentation. The following descriptions mention the types only briefly, along with how you can refer to them from ABAP programs.
Data Elements
Data elements in the ABAP Dictionary describe individual fields. They are the smallest indivisible units of the complex types described below, and are used to specify the types of columns in the database. Data elements can be elementary types or reference types.
Elementary Types
Elementary types are part of the dual-level domain concept for fields in the ABAP Dictionary. The elementary type has semantic attributes, such as texts, value tables, and documentation, and has a data type. There are two different ways to specify a data type:
By directly assigning an ABAP Dictionary type.
You can assign a predefined ABAP Dictionary type and a number of characters to an elementary type. The ABAP Dictionary has considerably more predefined types than the ABAP programming language. The number of characters here is not the field length in bytes, but the number of valid characters excluding formatting characters. The data types are different because the predefined data types in the ABAP Dictionary have to be compatible with the external data types of the database tables supported by the R/3 System.
When you refer to data types from the ABAP Dictionary in an ABAP program, the predefined Dictionary types are converted to ABAP types as follows:
Dictionary type
Meaning
Maximum length n
ABAP type
DEC
Calculation/amount field
1-31, 1-17 in tables
P((n+1)/2)
INT1
Single-byte integer
3
Internal only
INT2
Two-byte integer
5
Internal only
INT4
Four-byte integer
10
I
CURR
Currency field
1-17
P((n+1)/2)
CUKY
Currency key
5
C(5)
QUAN
Amount
1-17
P((n+1)/2)
UNIT
Unit
2-3
C(n)
PREC
Accuracy
2
X(2)
FLTP
Floating point number
16
F(8)
NUMC
Numeric text
1-255
N(n)
CHAR
Character
1-255
C(n)
LCHR
Long character
256-max
C(n)
STRING.
String of variable length
1-max
STRING.
RAWSTRING
Byte sequence of variable length
1-max
XSTRING
DATS
Date
8
D
ACCP
Accounting period YYYYMM
6
N(6)
TIMS
Time HHMMSS
6
T
RAW
Byte sequence
1-255
X(n)
LRAW
Long byte sequence
256-max
X(n)
CLNT
Client
3
C(3)
LANG
Language
internal 1, external 2
C(1)
("max" in LCHR and LRAW is the value of a preceding INT2 field. The "internal" length of a LANG field is in the Dictionary, the "external" length refers to the display on the screen.
Assigning a domain
The technical attributes are inherited from a domain. Domains are standalone Repository objects in the ABAP Dictionary. They can specify the technical attributes of a data element. One domain can be used by any number of data elements. When you create a domain, you must specify a Dictionary data type (see above table) and the number of characters.
Reference Types
Reference types describe single fields that can contain references to global classes and interfaces from the ABAP class library.
In an ABAP program, you can use the TYPE addition to refer directly to a data element. The predefined Dictionary data types of the domain are then converted into the corresponding ABAP types.
If you define a local data type in a program by referring to a data element as follows:
TYPES <t> TYPE <data element>.
the semantic attributes of the data element are inherited and will be used, for example, when you display a data object with type <t> on the screen. Since all data types in the ABAP Dictionary are based on data elements, they all contain the corresponding semantic attributes.
TYPES company TYPE s_carr_id.
DATA wa_company TYPE company.
wa_company = 'UA '.
WRITE: 'Company:', wa_company.
This example defines a local type COMPANY that refers to the data element S_CARR_ID. The data element is linked to the identically-named domain S_CARR_ID. The domain defines the technical attributes as data type CHAR with length 3. The local data type COMPANY in the program therefore has the ABAP type C(3). COMPANY also adopts the semantic attributes of the data element. In the above example, we declare a data object WA_COMPANY with this type and display it on a list. If the user chooses F1 help for the output field, the help text stored in the ABAP Dictionary will appear in a dialog box.
Structures
A structure is a sequence of any other data types from the ABAP Dictionary, that is, data elements, structures, table types, or database tables. When you create a structure in the ABAP Dictionary, each component must have a name and a data type.
In an ABAP program, you can use the TYPE addition to refer directly to a structure.
If you define a local data type in a program by referring to a structure as follows:
TYPES <t> TYPE <structure>.
the construction blueprint of the structure is used to create a local structure <t> in the program. The predefined Dictionary data types of the domains used by the data elements in the structure are converted into the corresponding ABAP types. The semantic attributes of the data elements are used for the corresponding components of the structure in the program. The components of the local structure <t> have the same names as those of the structure in the ABAP Dictionary.
To ensure compatibility with previous releases, it is still possible to use the LIKE addition in an ABAP program to refer to a structure in the ABAP Dictionary (except in classes).
Suppose the structure STRUCT is defined as follows in the ABAP Dictionary:
Field name
Type name
Description
COL1
CHAR01
Character field with length 1
COL2
CHAR08
Character field with length 8
COL3
CHAR10
Character field with length 10
The types CHAR01 to CHAR10 are data elements with corresponding domains. We can refer to this structure in ABAP:
TYPES struct_type TYPE struct.
DATA wa TYPE struct_type.
wa-col1 = '1'.
wa-col2 = '12345678'.
wa-col3 = '1234567890'.
This program creates a local structure in the program - STRUCT_TYPE - and a corresponding data object WA. We can address the components using the component names from the original structure.
Table Types
Table types are construction blueprints for internal tables that are stored in the ABAP Dictionary. When you create a table type in the ABAP Dictionary, you specify the line type, access type, and key. The line type can be any data type from the ABAP Dictionary, that is, a data element, a structure, a table type, or the type of a database table. You can also enter a predefined Dictionary type directly as the line type, in the same way that you can with a domain.
In an ABAP program, you can use the TYPE addition to refer directly to a table type.
If you define a local data type in a program by referring to a table type as follows:
TYPES <t> TYPE <table>.
the construction blueprint of the table type is used to create a local internal table <t> in the program. The predefined Dictionary data types of the domains used by the data elements in the structure are converted into the corresponding ABAP types. The semantic attributes of the data elements are used for the corresponding components of the internal table in the program.
Suppose the table type STRUCT_TABLE is defined in the Dictionary with the line type STRUCT from the previous example. We can refer to this in ABAP:
TYPES table_type TYPE struct_table.
DATA: table_wa TYPE table_type,
      line_wa LIKE LINE OF table_wa.
LOOP AT table_wa INTO line_wa.
WRITE: line_wa-col1, line_wa-col1, line_wa-col1.
ENDLOOP.
This program defines an internal table type TABLE_TYPE. From it, we define data objects TABLE_WA and LINE_WA. LINE_WA corresponds to the line type of the table type in the Dictionary, and is therefore compatible with the structure STRUCT.
Type Groups
Before Release 4.5A, it was not possible to define standalone types in the ABAP Dictionary to which you could refer using a TYPE addition in an ABAP program. It was only possible to refer to flat structures. Structures in programs corresponded to the structures of database tables or structures in the ABAP Dictionary. In ABAP programs, you could only refer to database tables and structures in the ABAP Dictionary using LIKE. It was, however, possible to refer to individual components of the Dictionary type. Complex local data types such as internal tables or deep structures had no equivalent in the ABAP Dictionary. The solution to this from Release 3.0 onwards was to use type groups. Type groups were based on the include technique, and allowed you to store any type definitions globally in the Dictionary by defining them using TYPES statements.
The definition of a type group is a fragment of ABAP code which you enter in the ABAP Editor. The first statement for the type group <pool> is always:
TYPE-POOL <pool>.
After this came the definitions of data types using the TYPES statement, as described in Local Data Types in Programs. It was also possible to define global constants using the CONSTANTS statement. All the names of these data types and constants must begin with the name of the type group and an underscore:
In an ABAP program, you must declare a type group as follows before you can use it:
TYPE-POOLS <pool>.
This statement allows you to use all the data types and constants defined in the type group <pool> in your program. You can use several type groups in the same program.
Let the type group HKTST be created as follows in the ABAP Dictionary:
TYPE-POOL hktst.
TYPES: BEGIN OF hktst_typ1,
                col1(10) TYPE c,
                col2 TYPE i,
       END OF hktst_typ1.
TYPES hktst_typ2 TYPE p DECIMALS 2.
CONSTANTS hktst_eleven TYPE i VALUE 11.
This type group defines two data types HKTST_TYP1 and HKTST_TYP2, as well as a constant HKTST_ELEVEN with the value 11.
Any ABAP program can use these definition by including a TYPE-POOLS statement:
TYPE-POOLS hktst.
DATA: dat1 TYPE hktst_typ1,
      dat2 TYPE hktst_typ2 VALUE '1.23'.
WRITE: dat2, / hktst_eleven.
The output is:
1,23
11
The data types defined in the type group are used to declare data objects with the DATA statement and the value of the constant is, as the output shows, known in the program.

Data types related to incrementing a query column value

Similar Messages

Maybe you are looking for