I have a stored procedure which searches a table for a variable set by the user it works fine but the search only finds the first letter of the string input.
I'm using ->
ALTER PROCEDURE [dbo].[test]
#search_string varchar
AS
BEGIN
SET NOCOUNT ON;
IF (#search_string IS NOT NULL) OR (LEN(#search_string) > 0)
SELECT [archive_id]
[archive_id],
[display_name]
FROM [test1].[dbo].[ARCHIVE_id]
WHERE [display_name] like #search_string+'%';
What I am trying to figure out is how I can search for a whole word in the display_name column.
Any help would be appreciated.
Mark
You have to declare the size of the variable
ALTER PROCEDURE [dbo].[test]
#search_string varchar(50)
This should work
See LIKE
% Any string of zero or more characters.
_ Any single character.
[ ] Any single character within the specified range ([a-f]) or set ([abcdef]).
[^] Any single character not within the specified range ([^a-f]) or set ([^abcdef]).
Related
Is there any way to make following query Work?
declare #t nvarchar(20)
set #t='حس'
SELECT [perno] ,[pName]
FROM [dbo].[People]
Where [pName] like N''+#t +'%'
I cann't use like this:
Where [pName] like N'حس%'
Or using an stored procedure :
ALTER PROCEDURE [dbo].[aTest]
(#t nvarchar(20))
AS
BEGIN
SELECT [perno] ,[pName]
FROM [dbo].[People]
WHERE ([People].[pName] LIKE N'' +#t + '%')
END
You don't need to use N prefix in the WHERE clause since your variable is already nvarchar, and you are passing a variable not a literal string.
Here is an example:
CREATE TABLE People
(
ID INT,
Name NVARCHAR(45)
);
INSERT INTO People VALUES
(1, N'حسام'),
(2, N'حسان'),
(3, N'حليم');
DECLARE #Name NVARCHAR(45) = N'حس';--You need to use N prefix when you pass the string literal
SELECT *
FROM People
WHERE Name LIKE #Name + '%'; --You can use it here when you pass string literal, but since you are passing a variable, you don't need N here
Live demo
You may have seen Transact-SQL code that passes strings around using an N prefix. This denotes that the subsequent string is in Unicode (the N actually stands for National language character set). Which means that you are passing an NCHAR, NVARCHAR or NTEXT value, as opposed to CHAR, VARCHAR or TEXT.
From docs
Prefix Unicode character string constants with the letter N. Without the N prefix, the string is converted to the default code page of the database. This default code page may not recognize certain characters.
To answer your question in the comment with a simple answer, you are using the wrong datatype, so ALTER the stored procedure and change the datatype of your parameter from VARCHAR to NVARCHAR.
UPDATE:
Since you are using an SP, you can create your SP (according to your comment) as
CREATE PROCEDURE MyProc
(
#Var NVARCHAR(45)
)
AS
BEGIN
SELECT *
FROM People
WHERE Name LIKE ISNULL(#Var, Name) + '%';
--Using ISNULL() will return all rows if you pass NULL to the stored procedure
END
and call it as
EXEC MyProc N'حس'; --If you don't use N prefix then you are pass a varchar string
If you see, you need to use the N prefix when you pass literal string to your SP not inside the SP or the WHERE clause neither.
Demo for the SP
in these lines
declare #t nvarchar(20)
set #t='حس'
the 'حس' is a varchar constant that you then assign to an nvarchar variable. But you already lost data with the original conversion to that varchar constant and you cannot get that back.
The solution is to use an nvarchar constant:
set #t=N'حس'
It might be much simpler:
Try this
declare #t nvarchar(20)
set #t='حس';
SELECT #t; --the result is "??"
You are declaring the variable as NVARCHAR correctly. But the literal does not know its target. Without the N it is taken as a VARCHAR with the default collation.
The following line
Where [pName] like N''+#t +'%'
will search for a pName LIKE '??%'.
The solution should be
set #t=N'حس'; --<-- N-prefix
I'm new to SQL so please forgive me if I use incorrect terminology and my question sounds confused.
I've been tasked with writing a stored procedure which will be sent 3 variables as strings (varchar I think). I need to take two of the variables and remove text from the end of the variable and only from the end.
The strings/text I need to remove from the end of the variables are
co
corp
corporation
company
lp
llc
ltd
limited
For example this string
Global Widgets LLC
would become
Global Widgets
However it should only apply once so
Global Widgets Corporation LLC
Should become
Global Widgets Corporation
I then need to use the altered variables to do a SQL query.
This is to be used as a backup for an integration piece we have which makes a callout to another system. The other system takes the same variables and uses Regex to remove the strings from the end of variables.
I've tried different combinations of PATINDEX, SUBSTRING, REPLACE, STUFF but cannot seem to come up with something that will do the job.
===============================================================
Edit: I want to thank everyone for the answers provided so far, but I left out some information that I didn't think was important but judging by the answers seems like it would affect the processing.
My proc will start something like
ALTER PROC [dbo].[USP_MyDatabaseTable] #variableToBeAltered nvarchar(50)
AS
I will then need to remove all , and . characters. I've already figured out how to do this. I will then need to do the processing on #variableToBeAltered (technically there will be two variables) to remove the strings I listed previously. I must then remove all spaces from #variableToBeAltered. (Again I figured that part out). Then finally I will use #variableToBeAltered in my SQL query something like
SELECT [field1] AS myField
,[field2] AS myOtherField
FROM [MyData].[dbo].[MyDatabaseTable]
WHERE [field1] = (#variableToBeAltered);
I hope this information is more useful.
I'd keep all of your suffixes in a table to make this a little easier. You can then perform code like this either within a query or against a variable.
DECLARE #company_name VARCHAR(50) = 'Global Widgets Corporation LLC'
DECLARE #Suffixes TABLE (suffix VARCHAR(20))
INSERT INTO #Suffixes (suffix) VALUES ('LLC'), ('CO'), ('CORP'), ('CORPORATION'), ('COMPANY'), ('LP'), ('LTD'), ('LIMITED')
SELECT #company_name = SUBSTRING(#company_name, 1, LEN(#company_name) - LEN(suffix))
FROM #Suffixes
WHERE #company_name LIKE '%' + suffix
SELECT #company_name
The keys here are that you are only matching with strings that end in the suffix and it uses SUBSTRING rather than REPLACE to avoid accidentally removing copies of any of the suffixes from the middle of the string.
The #Suffixes table is a table variable here, but it makes more sense for you to just create it and fill it as a permanent table.
The query will just find the one row (if any) that matches its suffix with the end of your string. If a match is found then the variable will be set to a substring with the length of the suffix removed from the end. There will usually be a trailing space, but for a VARCHAR that will just get dropped off.
There are still a couple of potential issues to be aware of though...
First, if you have a company name like "Watco" then the "co" would be a false positive here. I'm not sure what can be done about that other than maybe making your suffixes include a leading space.
Second, if one suffix ends with one of your other suffixes then the ordering that they get applied could be a problem. You could get around this by only applying the row with the greatest length for suffix, but it gets a little more complicated, so I've left that out for now.
Building on the answer given by Tom H, but applying across the entire table:
set nocount on;
declare #suffixes table(tag nvarchar(20));
insert into #suffixes values('co');
insert into #suffixes values('corp');
insert into #suffixes values('corporation');
insert into #suffixes values('company');
insert into #suffixes values('lp');
insert into #suffixes values('llc');
insert into #suffixes values('ltd');
insert into #suffixes values('limited');
declare #companynames table(entry nvarchar(100),processed bit default 0);
insert into #companynames values('somecompany llc',0);
insert into #companynames values('business2 co',0);
insert into #companynames values('business3',0);
insert into #companynames values('business4 lpx',0);
while exists(select * from #companynames where processed = 0)
begin
declare #currentcompanyname nvarchar(100) = (select top 1 entry from #companynames where processed = 0);
update #companynames set processed = 1 where entry = #currentcompanyname;
update #companynames
set entry = SUBSTRING(entry, 1, LEN(entry) - LEN(tag))
from #suffixes
where entry like '%' + tag
end
select * from #companynames
You can use a query like below:
-- Assuming that you can maintain all patterns in a table or a temp table
CREATE TABLE tbl(pattern varchar(100))
INSERT INTO tbl values
('co'),('llc'),('beta')
--#a stores the string you need to manipulate, #lw & #b are variables to aid
DECLARE #a nvarchar(100), #b nvarchar(100), #lw varchar(100)
SET #a='alpha beta gamma'
SET #b=''
-- #t is a flag
DECLARE #t int
SET #t=0
-- Below is a loop
WHILE(#t=0 OR LEN(#a)=0 )
BEGIN
-- Store the current last word in the #lw variable
SET #lw=reverse(substring(reverse(#a),1, charindex(' ', reverse(#a)) -1))
-- check if the word is in pattern dictionary. If yes, then Voila!
SELECT #t=1 FROM tbl WHERE #lw like pattern
-- remove the last word from #a
SET #a=LEFT(#a,LEN(#a)-LEN(#lw))
IF (#t<>1)
BEGIN
-- all words which were not pattern are joined back onto this stack
SET #b=CONCAT(#lw,#b)
END
END
-- get back the remaining word
SET #a=CONCAT(#a,#b)
SELECT #a
drop table tbl
Do note that this method overcomes Tom's problem of
if you have a company name like "Watco" then the "co" would be a false positive here. I'm not sure what can be done about that other than maybe making your suffixes include a leading space.
use the replace function in SQL 2012,
declare #var1 nvarchar(20) = 'ACME LLC'
declare #var2 nvarchar(20) = 'LLC'
SELECT CASE
WHEN ((PATINDEX('%'+#var2+'%',#var1) <= (LEN(#var1)-LEN(#var2)))
Or (SUBSTRING(#var1,PATINDEX('%'+#var2+'%',#var1)-1,1) <> SPACE(1)))
THEN #var1
ELSE
REPLACE(#var1,#var2,'')
END
Here is another way to overcome the 'Runco Co' situation.
declare #var1 nvarchar(20) = REVERSE('Runco Co')
declare #var2 nvarchar(20) = REVERSE('Co')
Select REVERSE(
CASE WHEN(CHARINDEX(' ',#var1) > LEN(#var2)) THEN
SUBSTRING(#var1,PATINDEX('%'+#var2+'%',#var1)+LEN(#var2),LEN(#var1)-LEN(#var2))
ELSE
#var1
END
)
First of all, this problem doesn't exist when the text is just English, but when I insert Arabic text, I got the problem.
Look at my code
CREATE PROCEDURE insertToPinTableCardActivation
(#callerID VARCHAR (200),
#vAccount VARCHAR (200))
AS
BEGIN
DECLARE #textEnglish NVARCHAR(1000) --missing length previously
SET #textEnglish = 'Dear customer, your Card linked to account number '+ #vAccount --missing set keyword
SET #textEnglish = #textEnglish + ' is now activated. Thank you for banking with us.'
SET #textEnglish = 'عزيزي الزبون، تم تفعيل بطاقة الصراف الآلي التابعة لحسابكم رقم ' + #vAccount
INSERT INTO pinData([CallerID], [body], [processed])
VALUES (#callerID, #textEnglish, 0)
END
The code creates a string of mix Arab and English, and then insert it to a table.
My problem is that look what it is being inserted to the table
even though i already made the field body as nvarchar
could you help please
Update 1
I am inserting from my sql server when executing the stored procedure
update 2
if i go to the table and insert the data manually in arab, the arab letters shows correctly
IF you want to insert Unicode string literals, you must prepend your string literal with an N prefix - try this:
SET #textEnglish = N'...(insert your Arabic text here)...'
Otherwise, your text is reverted back to a non-Unicode format before being stored - and that's why you lose the Arabic text....
And also: if you're concatenating with VARCHAR parameters, I'd recommend using an explicit CAST to NVARCHAR (include a length when casting!):
SET #textEnglish = N'Dear customer, your Card linked to account number ' + CAST(#vAccount AS NVARCHAR(100))
I'm using stored procedure to delete a row from MSSQL database based on a column that uses nvarchar(100) and Persian language.
when i want to insert into this column, i use the word N before the record to be able to perform the insert operation :
insert into materialPrice values( N'persian word',1000,100,0,0,0,0)
the problem is when i want to delete the same record, stored procedure does not work :
create proc spRemoveMaterial
#materialName nvarchar(100)
as
begin
delete from materialPrice where materialName = #materialName
end
I've tried to use N before #materialName but it returend syntax error. how could it be done ?
The N is a marker that causes the string literal to be represented in Unicode--implying that you are inserting into a Unicode column.
You should be able to convert the variable to Unicode with cast. Something like:
cast(#materialName as nvarchar(100))
With the correct type (nchar or nvarchar) and length to match the column.
The problem was with the database collation, following code has fixed it :
ALTER database MaterialDB COLLATE Persian_100_CI_AS
I need to replace a list of characters in a string with some mapped characters.
I have a table 'dbo.CharacterMappings' with 2 columns: 'CharacterToFilter' and 'ReplacementCharacter'.
Say that there are 3 records in this table:
Filter Replacement
$ s
# a
0 o
How would I replace all of the filter characters in a string based on these mappings?
i.e. 'Hell0 c#t$' needs to become 'Hello cats'.
I cant really think of any way of doing this without resorting to a table variable and then looping through it. I.e. have a table variable with a 'count' column then use a loop to select 1 row at a time based on this column. Then I can use the REPLACE function to update the characters one at a time.
Edit: I should note that I always want to strip out these characters (I don't need to worry about $5 -> s5 for example).
declare #s varchar(50)= 'Hell0 c#t$'
select #s = REPLACE(#s, CharacterToFilter, ReplacementCharacter)
from CharacterMappings
select #s
You could create a function:
CREATE FUNCTION [dbo].[ReplaceAll]
(
#text varchar(8000)
)
RETURNS VARCHAR(8000)
AS
BEGIN
SELECT #text =
REPLACE(#text,cm.Filter, cm.Replacement)
FROM CharacterMappings cm;
RETURN #text
END
Then this
select dbo.[ReplaceAll]('Hell0 c#t$');
returns Hello cats