I have been trying to set up a test database but I keep running into issues with pulling in the data from its normalized form.
Below is the latest version of the SQL query I've been working on.
INSERT INTO TestData.dbo.Info (Name,Did)
SELECT DISTINCT a.Name, b.Did
FROM StageDB.dbo.MockData a INNER JOIN Testdata.dbo.Dinfo b
ON a.Name = CAST(b.Did as varchar(10))
The output I get is the following:
(0 row(s) affected)
I've been trying to monkey around with it on my own but can't seem to make it work the way I want to.
My objective here is to pull data (the primary key from a table with data already in my database, Did from TestData.dbo.Dinfo that is of int type) and merge it with data from my staging table (a particular column from the table in the staging database, StageDB.dbo.MockData, Name of type varchar(10)), then inserting into a new table on my main database. The database table I'm trying to put these things into is all set up with the correct fields and types (primary key column, auto generated as rows are added, Name column that is varchar(10), and Did column that is int).
EDIT: Table Definitions, Sample Data, Desired Result
Destination Table:
TestData.dbo.Info
Columns: Iid (int, primary key of table set to auto increment as new records are added), Name (varchar(10)), Did (int, foreign key from TestData.dbo.Dinfo).
StageDB.dbo.MockData
Columns: Many columns exist in this table that are not relevant to what I am trying to pull off. The only one I am interested in is the column containing names that I want to tie together with information from the Dinfo table. Name (nvarchar(255),null).
TestData.dbo.Dinfo
Columns: Did (int, primary key), Donor (varchar(20)).
Sample of Data
From Dinfo:
Did Donor
01 Howard L
From MockData:
Name
Smith J
Desired Results
Iid Name Did
01 Smith J 01
Any help or advice would be much appreciated. I would really like it if someone can show me the correct SQL syntax for this as I think it may just be a matter of writing it correctly. Additionally, any tips or websites that can help me learn more SQL would be appreciated.
Thank you!
Change this:
ON a.Name = b.Did
To this:
ON a.Name = CAST(b.Did as varchar(10))
I suspect there's a lot more wrong with your query in terms of getting the results you want, but this should fix your error.
You need to figure out where the error is occurring. There are three possibilities:
mockdata.name is a string and NInfo.data is an integer
dinfo.did is a string and NInfo.did is an integer
mockdata.name is a string and dinfo.did is an integer (or vice versa)
Based on the naming conventions, the third is the most likely. When a number is compared to a string, the string is converted to a number. However, you need to be careful whenever you use implicit type conversions.
If the third option, then you can convert the integer to a string (as other answers propose). However, I would ask why you are doing such a comparison.
Error is in ON a.Name = b.Did Name column may contains alphabets,number or special characters. Did column contains only number or integers only.
Related
I have the following code:
SELECT S~CLUSTD AS ZZCLUSTD
INTO CORRESPONDING FIELDS OF TABLE #lt_viqmel_iflos
FROM viqmel AS v
LEFT OUTER JOIN stxl AS S
ON s~tdobject = #lv_qmel
AND s~tdname = v~qmnum
Select statement generates following short dump:
Only the prefixed length field can be used to read from the LRAW field or
LCHR field S~CLUSTD.
Internal table lt_viqmel_iflos is type viqmel_iflos(DB view which contains DB table QMEL) to which I appended ZZCLUSTD type char200.
The problem is that I cannot make ZZCLUSTD type LRAW in QMEL because I get the following error:
So my only option (that I am aware of) remains to select into char200 the first 200 characters of LRAW.
Is this even possible?
Or is there another way to select LRAW data?
I found the info about the topic, but unfortunately I can't adapt it to my scenario:read LRAW data
In fact, there are two questions here.
The first one is the activation error of table QMEL:
Field ZZCLUSTD does not have a preceding length field of type INT4
A DDIC table containing a column of type LCHR and LRAW, requires that it's always immediately preceded with a column of type INT2 or INT4 (although the message says only INT4).
The second question is about how to read such a field. Both columns must always be read at the same time, and the INT2/INT4 column must be "read before" the LCHR/LRAW column. The only reference I could find to explain this restriction is in the note 302788 - LCHR/LRAW fields in logical cluster tables.
The INT2 column of STXL table being named CLUSTR, the following code works:
TYPES: BEGIN OF ty_viqmel_iflos,
clustr TYPE stxl-clustr, "INT2
zzclustd TYPE stxl-clustd, "LCHR
END OF ty_viqmel_iflos.
DATA lt_viqmel_iflos TYPE TABLE OF ty_viqmel_iflos.
SELECT S~CLUSTR, S~CLUSTD AS ZZCLUSTD
INTO CORRESPONDING FIELDS OF TABLE #lt_viqmel_iflos
FROM viqmel AS v
INNER JOIN stxl AS S
ON s~tdname = v~qmnum
UP TO 100 ROWS.
NB: there is a confusion in your question, where you refer to both CLUSTD from STXL and ZZCLUSTD from QMEL. I don't understand what you are trying to achieve exactly.
NB: if you want to read the texts from the table STXL, there's another solution by calling the function module READ_TEXT_TABLE, or READ_MULTIPLE_TEXTS if you prefer. They were made available by the note 2261311. In case you don't have or can't install these function modules, you may try this gist which does the same thing. It also contains a reference to another discussion.
NB: for information, to be more precise, LRAW contains bytes, not characters, and for data clusters (case of STXL), these bytes correspond to any values (characters in the case of STXL) zipped with the statement EXPORT and are to be unzipped with IMPORT`.
In application I am working on.
I have to input from user through excel and first put it in temporary sql table & then from temporary table to final target table.
My query is failing while putting data from temporary table to target table.
Because some values present in temporary table are out of range of columns in target table.
How can I check if values present in temporary table are within range of column of target table?
I have to check like this
20 < len(temporary_table.column1) < 50
or is there any better way
If you are using SQL server you can use below query for data checking.
temporary_table.column1 between 20 and 50
If you are looking based on the column max length. For example, your columns have datatype varchar(100) then you can use the condition like this
where len(temporary_table.column1)<=100
Extending on the above answer you can just use col_length instead of hard coding the value on the target column. This makes it more automated and less prone to mistakes (entering a value mistakenly)
where len(temporary_table.column1) <= COL_LENGTH ( 'target_table' , 'column1' )
I need to create a column name based on the value of other columns. I need to return a value from a column, but the specific name depends on the value insert on other table.
From intance:
Table A
Column1 | Column2
1 2
Base on that values I need to go to the table B to the column "VE12".
I need this dynamiclly, so the execute(#query) is my last option and I would like to avoid CASE WHEN statments because I have more than 50 options.
My query will be something like:
select case when fn.tab=8 and fo.pais=3 then cp.ve83 end
FROM fn
INNER JOIN fo ON fo.stamp = fn.stamp
INNER JOIN cp
If the value in the column tab is 8 and the value in column pais is 3 I should return the value in column ve83.
Thanks for all the help!
The only sensible option is to go back to the business meaning of the data and redesign the database according to that, instead of according to "technique-oriented abstractions" such as these that SQL was never intended to support.
The main reason for this is that SQL was founded on FIRST order logic, and this precludes supporting stuff like varying domains. Which you are doing (or at least seeking to do) because ve12 could be a DATETIME and ve83 could be a VARCHAR and ve56 coulb be a BLOB etc. etc. So there is just no way for you [or anyone else] to determine the data type of the results in your query, and it is even more impossible to attach meaning to what comes out of your desired query precisely because of this varying-domain and varying-source characteristic.
I have two tables in a PostgreSQL database.
The first table contains an ID and a text field with up to 200 characters and the second table contains a data definition table which has a column that contains smileys or acronyms and a second column which converts them to plain readable English.
The number of records in table 1 is about 1200 and the number in table two is about 300.
I wish to write a SQL statement which will convert any text speak in column 1 in table one into normal readable language based on the definitions in Table 2.
So for example if the value in table 1 reads as: Finally Finished :)
The transformed SQL would be something like: Finally Finished Smiles or smiling,
where the definition is pulled from the second table.
Note the smiley could be anywhere in the text in column one and could one of three hundred characters.
Does anyone know if this is possible?
Yes. Do you want to do it entirely in SQL, or are you writing a brief bit of code to do this? I'm not entirely sure of how to do it all in SQL but I would consider something like what is below:
SELECT row.textToTranslate FROM Table_1
oldText = row.textToTranslate
Split row.textToTranslate by some delimeter
For each word in row.textToTranslate:
queryResult = SELECT FROM Table_2 WHERE pretranslate=word
if(queryResult!=Null)
modifiedText = textToTranslate.replace(word, queryResult)
UPDATE Table_1 SET translatedText=modifiedText WHERE textToTranslate=oldText
I have a query in MS Access which creates a table from two subqueries. For two of the columns being created, I'm dividing one column from the first subquery into a column from the second subquery.
The datatype of the first column is a double; the datatype of the second column is decimal, with scale of 2, but I want the second column to be a double as well.
Is there a way to force the datatype when creating a table through a standard make-table Access query?
One way to do it is to explicitly create the table before putting anything into it.
Your current statement is probably like this:
SELECT Persons.LastName,Orders.OrderNo
INTO Persons_Order_Backup
FROM Persons
INNER JOIN Orders
ON Persons.P_Id=Orders.P_Id
WHERE FirstName = 'Alistair'
But you can also do this:
----Create NewTable
CREATE TABLE NewTable(FirstName VARCHAR(100), LastName VARCHAR(100), Total DOUBLE)
----INSERT INTO NewTableusing SELECT
INSERT INTO NewTable(FirstName, LastName, Total)
SELECT FirstName, LastName,
FROM Person p
INNER JOIN Orders o
ON p.P_Id = o.P_Id
WHERE p.FirstName = 'Alistair'
This way you have total control over the column types. You can always drop the table later if you need to recreate it.
You can use the cast to FLOAT function CDBL() but, somewhat bizarrely, the Access Database Engine cannot handle the NULL value, so you must handle this yourself e.g.
SELECT first_column,
IIF(second_column IS NULL, NULL, CDBL(second_column))
AS second_column_as_float
INTO Table666
FROM MyTest;
...but you're going to need to ALTER TABLE to add your keys, constraints, etc. Better to simply CREATE TABLE first then use INSERT INTO..SELECT to populate it.
You can use CDbl around the columns.
An easy way to do this is to create an empty table with the correct field types and then to an Append-To query and Access will automatically convert the data to the destination field.
I had a similar situation, but I had a make-table query creating a field with NUMERIC datatype that I wanted to be short text.
What I did (and I got the idea from Stack) is to create the table with the field in question as Short Text, and at the same time build a delete query to scrub the records. I think it's funny that a DELETE query in access doesn't delete the table, just the records in it - I guess you have to use a DROP TABLE function for that, to purge a table...
Then, I converted my make-table query to an APPEND query, which I'd never done before... and I just added the running of the DELETE query to my process.
Thank you, Stack Overflow !
Steve
I add a '& ""' to the field I want to make sure are stored as text, and a ' *1 ' (as in multiplying the amount by 1) to the fields I want to store as numeric.
Seems to do the trick.
To get an Access query to create a table with three numeric output fields from input numeric fields, (it kept wanting to make the output fields text fields), had to combine several of the above suggestions. Pre-establish an empty output table with pre-defined output fields as integer, double and double. In the append query itself, multiply the numeric fields by one. It worked. Finally.