I have a 'text' type in a SQL table (BigNote), and a new nvarchar(2000) field (LittleNote).
I need to save the first 2000 characters from the #BigNote into the LittleNote field within a stored procedure. Can someone share some thoughts?
Do I need to check for:
- nulls?
- the BigNote length and only grab the exact amount?
It is working by just assigning LittleNote = #BigNote, but I want to avoid problems when the text is too big etc...
Once we release an update to the application, we will handle this more elegantly, but in the meantime we need to get a non-Text field with this data in the database.
you could use
LittleNote = CONVERT(NVARCHAR(2000), #BigNote)
or with SUBSTRING
LittleNote = SUBSTRING(#BigNote, 1, 2000)
Related
I have a String field in a Dataset in (mmddyyyy) format.
I am trying to convert it into a Date field in SSRS.
I already tried using the below command but I am getting error.
CDate(Fields!LocalTXNDate.Value)
Can anyone please suggest.
While Larnu is correct, the way to do it is to correct the database, sometimes we lowly report makers have no say in making these changes - much less getting a DBA to do it in a reasonable amount of time.
If you can't change the data to be correct, the easiest way to convert and use the field as a date is to add a Calculated Field to the Dataset. Open the dataset properties, click on the Fields tab, Add a Calculated field.
For the Expression, use string functions to parse the field into a generic date format and then CDATE to convert to a date type. Then use the new field for dates. You could also use this in your text box if it's not being reused but it's easier to manipulate the Calculated field.
=CDATE(
RIGHT(Fields!LocalTXNDate.Value, 4) & "-" &
LEFT(Fields!LocalTXNDate.Value, 2) & "-" &
MID(Fields!LocalTXNDate.Value, 3, 2)
)
The problem here isn't SSRS but your data, and that you are using a string based data type to store the data. You need to fix the problem at the source, not at the report level.
The string format you have chosen, MMddyyyy isn't a format that is recognised by default in any of the languages in SQL Server, nor if you explicitly use SET DATEFORMAT, nor does it appear as a style. SET DATEFORMAT MDY; SELECT CONVERT(date,'11172022'); will fail. Therefore you'll need to first do some string manipulation on the data first to be an unambiguous format (yyyyMMdd):
UPDATE YT
SET YourDateColumn = CONVERT(varchar(8),V.DateValue,112)
FROM dbo.YourTable YT
CROSS APPLY (VALUES(TRY_CONVERT(date,CONCAT(RIGHT(YT.YourDateColumn,4),LEFT(YT.YourDateColumn,4)))))V(DateValue);
For any bad values you have, such as '17112022' this will UPDATE the value to NULL; as such you may want to create a new column for the new value, or perhaps a new column to store the value of dates that couldn't be converted.
After you've changed the value to an unambiguous format, then you can ALTER the column:
ALTER TABLe dbo.YourTable ALTER COLUMN YourDateColumn date NULL;
Note that if you have any constraints, you will need to DROP those first, and then reCREATE them afterwards.
Now that the data type of the column is correct, you need not do anything in SSRS, as the data type is correct.
I keep getting errors when using the REPLACE function in SQL and i don't know why?
I execute this query:
UPDATE [ShellPlus].[dbo].[Views]
SET [ShellPlus].[dbo].[Views].SerializedProperties = REPLACE(SerializedProperties,'|EKZ PSG met verkort EEG','|EKZ PSG met verkort EEG|EEG kort op EEG3')
WHERE [ShellPlus].[dbo].[Views].InternalViewID = '3F4C1E8E-DA0C-4829-B447-F6BDAD9CD505'
And I keep getting this message:
Msg 8116, Level 16, State 1, Line 6
Argument data type ntext is invalid for argument 1 of replace function.
At UPDATE I give the correct table
At SET I give the correct column
At REPLACE I give the: (column name, 'old string', 'new string')
What am I doing wrong?
The real solution is fix the data type:
USE ShellPlus;
ALTER TABLE [dbo].[Views] ALTER COLUMN SerializedProperties nvarchar(MAX);
Then your existing query will work. But you should also normalise that data.
Try this:
UPDATE [ShellPlus].[dbo].[Views]
SET [ShellPlus].[dbo].[Views].SerializedProperties = CAST(REPLACE(CAST(SerializedPropertiesas NVarchar(MAX)),'|EKZ PSG met verkort EEG','|EKZ PSG met verkort EEG|EEG kort op EEG3') ) AS NText)
WHERE [ShellPlus].[dbo].[Views].InternalViewID = '3F4C1E8E-DA0C-4829-B447-F6BDAD9CD505'
Your doing at least three things wrong:
It seems like you're storing delimited data in your column - which is a mistake. For more information, read Is storing a delimited list in a database column really that bad?, where you will see a lot of reasons why the answer to this question is Absolutely yes!
You're using the Text data type, which is deprecated since SQL Server 2008 introduced varchar(max) to replace it. Given the fact that we're in 2019 and the 2008 version just ended it's extended support this July, its high time to change that Text data type to varchar(max) (and if you're using the 2008 or 2008 r2 version, upgrade your SQL Server).
You're using four-parts identifiers for your column names (Thanks #Larnu for pointing that out in the comments). Best practice is to use two-parts identifiers for column names. Read my answer here for a details explanation.
The solution to your problem involves refactoring the database structure - normalize what needs to be normalized, and replace of all Text, NText and Image with their modern replacement data types: varchar(max), nvarchar(max) and varbinary(max). Also, this would be a good time to figure out if you really need to support values longer than 8000 chars (4000 for unicode values) and if not, use a more appropriate value (max length columns have poor performance compared to "regular" length columns).
I have value in a column which stores the data as an json object .
Below is an example how the value is stored, I know the name of which I have to get the value over here
{"Name":"Today Date","value":"02/23/2017"},{"Name":"Exp Date","value":"02/23/2016"}
I want the value of name "Today Date" over here.
I can't use json parse as we are still using sql server 2014.
Currently with a hint from r41n's answer, I did the below:
select SUBSTRING
( '{"Name":"Today Date","value":"02/23/2017"},{"Name":"Exp Date","value":"02/23/2016"}',
PATINDEX('%{"Name":"Today Date","value":"%', '{"Name":"Today Date","value":"02/23/2017"},{"Name":"Exp Date","value":"02/23/2016"}') + len ('{"Name":"Today Date","value":"'),
10)
If there are any other alternative solutions, please let me know.
PATINDEX + SUBSTRING
It's slow and kinda ugly, but you could go and use PATINDEX like so:
PATINDEX('%{"Name":"Today Date","value":"%', JSONColumn)
This would give you the starting-position in JSONColumn where string starts. You could then go and use SUBSTRING(JSONColumn, 30, 10) to get only the date.
This obviously doesn't work if the date or JSON data is not constant or changes from one instance to another.
I didn't test this, but used it before.
I have a spreadsheet that gets all values loaded into SQL Server. One of the fields in the spreadsheet happens to be money. Now in order for everything to be displayed correcctly - i added a field in my tbl with Money as DataType.
When i read the value from spreadsheet I pretty much store it as a String, such as this... "94259.4". When it get's inserted in sql server it looks like this "94259.4000". Is there a way for me to basically get rid of the 0's in the sql server value when I grab it from DB - because the issue I'm running across is that - even though these two values are the same - because they are both compared as Strings - it thinks that there not the same values.
I'm foreseeing another issue when the value might look like this...94,259.40 I think what might work is limiting the numbers to 2 after the period. So as long as I select the value from Server with this format 94,259.40 - I thin I should be okay.
EDIT:
For Column = 1 To 34
Select Case Column
Case 1 'Field 1
If Not ([String].IsNullOrEmpty(CStr(excel.Cells(Row, Column).Value)) Or CStr(excel.Cells(Row, Column).Value) = "") Then
strField1 = CStr(excel.Cells(Row, Column).Value)
End If
Case 2 'Field 2
' and so on
I go through each field and store the value as a string. Then I compare it against the DB and see if there is a record that has the same values. The only field in my way is the Money field.
You can use the Format() to compare strings, or even Float For example:
Declare #YourTable table (value money)
Insert Into #YourTable values
(94259.4000),
(94259.4500),
(94259.0000)
Select Original = value
,AsFloat = cast(value as float)
,Formatted = format(value,'0.####')
From #YourTable
Returns
Original AsFloat Formatted
94259.40 94259.4 94259.4
94259.45 94259.45 94259.45
94259.00 94259 94259
I should note that Format() has some great functionality, but it is NOT known for its performance
The core issue is that string data is being used to represent numeric information, hence the problems comparing "123.400" to "123.4" and getting mismatches. They should mismatch. They're strings.
The solution is to store the data in the spreadsheet in its proper form - numeric, and then select a proper format for the database - which is NOT the "Money" datatype (insert shudders and visions of vultures circling overhead). Otherwise, you are going to have an expanding kluge of conversions between types as you go back and forth between two improperly designed solutions, and finding more and more edge cases that "don't quite work," and require more special cases...and so on.
I am using Access database for one system, and SQL server for another system. The data gets synced between these two systems.
The problem is that one of the fields in a table in Access database is a Memo field which is in double-byte format. When I read this data using DataGridView in a Windows form, the text is displayed as ???.
Also, when data from this field is inserted in sql server database nvarchar(max) field, non-English characters are inserted as ???.
How can I fetch data from memo field, convert its encoding to Unicode, so that it appears correctly in SQL server database as well?
Please help!!!
I have no direct experience with datagrid controls, but I already noticed that some database values are not correctly displayed through MS-Access controls. Uniqueidentifiers, for example, are set to '?????' values when displayed on a form. You could try this in the debug window, where "myIdField" control is bound to "myIdField" field from the underlying recordset (unique Identifier type field):
? screen.activeForm.recordset.fields("myIdField")
{F0E3C822-BEE9-474F-8A4D-445A33F363EE}
? screen.activeForm.controls("myIdField")
????
Here is what the Access Help says on this issue:
The Microsoft Jet database engine stores GUIDs as
arrays of type Byte. However, Microsoft Access can't return Byte data
from a control on a form or report. In order to return the value of a
GUID from a control, you must convert it to a string. To convert a
GUID to a string, use the StringFromGUID function. To convert a string
back to a GUID, use the GUIDFromString function.
So if you are extracting values from controls to update a table (either directly or through a recordset), you might face similar issuers ...
One solution will be to update data directly from the recordset original value. Another option would be to open the original recordset with a query containing necessary conversion instructions so that the field will be correctly displayed through the control.
What I usually do in similar situation, where I have to manipulate uniqueIdentifier fields from multiple datasources (MS-Access and SQL Server for Example), is to 'standardize' these fields as text in the recordsets. Recordsets are then built with queries such as:
SQL Server
"SELECT convert(nvarchar(36),myIdField) as myIdField, .... FROM .... "
MS-Access
"SELECT stringFromGUID(myIdField) as myIdField, .... FROM .... "
I solved this issue by converting the encoding as follows:
//Define Windows 1252, Big5 and Unicode encodings
System.Text.Encoding enc1252 = System.Text.Encoding.GetEncoding(1252);
System.Text.Encoding encBig5 = System.Text.Encoding.GetEncoding(950);
System.Text.Encoding encUTF16 = System.Text.Encoding.Unicode;
byte[] arrByte1 = enc1252.GetBytes(note); //string to be converted
byte[] arrByte2 = System.Text.Encoding.Convert(encBig5, encUTF16, arrByte1);
string convertedText = encUTF16.GetString(arrByte2);
return convertedText;
Thank you all for pitching in!