I have a value in a database column VALUE:
C_4327
I need to strip the non numeric text from this so that it just leaves the numbers. I have tried using the REPLACE function within SQL but not I don't want to replace, just strip them out. I was previously using PHP to do this:
preg_replace("/[^0-9]/","",$row['VALUE']);
I'm retrieving the value in a SELECT statement.
Your help would be appreciated.
Thanks in advance
If you want to get the number at the end of the string, you can use the following arcane approach:
select reverse(reverse(value) + 0) as NumberAtEnd;
In your case:
value ='C_4327'
reverse(value) = '7234_C'
reverse(value) + 0 = 7234
reverse(reverse(value) + 0) = '4327'
you can create a Function like that/.
CREATE FUNCTION GetNumeric
(
#strAlphaNumeric VARCHAR(256))
RETURNS VARCHAR(256)
AS BEGIN
DECLARE #intAlpha INT
SET #intAlpha = PATINDEX('%[^0-9]%', #strAlphaNumeric)
BEGIN
WHILE
#intAlpha > 0
BEGIN
SET #strAlphaNumeric = STUFF(#strAlphaNumeric, #intAlpha, 1, '' )
SET #intAlpha = PATINDEX('%[^0-9]%', #strAlphaNumeric )
END
END
RETURN ISNULL(#strAlphaNumeric,0)
END
GO
then call the function as follows
SELECT GetNumeric('123456789blahblahblah') AS filedname FROM your_table
you will get the answer : 123456789
simple way: how about substring...
select substr( value, 3 ) from mytable;
it works on your example - but not sure if your real data is more complicated.
Related
Thanks to this answer https://stackoverflow.com/a/8180159/16349298 , i'm able to translate
a string into a temporary table (usable for WHERE <id> IN <tmpTable>.<colomn>)
The only modification i made is at the end (The select) :
CREATE PROCEDURE stringToTmpTable(IN inputString VARCHAR(255), IN sep VARCHAR(255))
BEGIN
declare pos int; -- Keeping track of the next item's position
declare item varchar(100); -- A single item of the input
declare breaker int; -- Safeguard for while loop
-- The string must end with the delimiter
if right(inputString, 1) <> sep then
set inputString = concat(inputString, sep);
end if;
DROP TABLE IF EXISTS MyTemporaryTable;
CREATE TEMPORARY TABLE MyTemporaryTable ( columnName varchar(100) );
set breaker = 0;
while (breaker < 2000) && (length(inputString) > 1) do
-- Iterate looking for the delimiter, add rows to temporary table.
set breaker = breaker + 1;
set pos = INSTR(inputString, sep);
set item = LEFT(inputString, pos - 1);
set inputString = substring(inputString, pos + 1);
insert into MyTemporaryTable values(item);
end while;
SELECT * FROM MyTemporaryTable;
END
I would like to use this process in a function or procedure in order to call it in any procedure that needs it.
So here is the problem :
I don't know how to store the result of this procedure into a variable : i can't use the SELECT * INTO #p FROM ...; like CALL stringToTmpTable(<string>,<separator>) INTO #table;
An other way would be to add OUT parameter to stringToTmpTable() but it can't return multiple rows. Unfortunatly the amount of parameters in the string is variable so i can't define as much variable as there is parameters in the string.
Finally the FIND_IN_SET() isn't the solution i need.
In the worst case I could copy / past the stringToTmpTable() process in any other procedure that needs it, but that doesn't seem like the best way to me.
Any suggestions ?
"i'm able to translate a string into a temporary table" too, but I am using a different method:
SET #input = 'Banana, Apple, Orange, Pears';
WITH RECURSIVE cte1 as (
select
#input as s,
substring_index(substring_index(#input,',',1),',',-1) as w,
length(#input)-length(replace(#input,',','')) x
union all
select
substring_index(s,',',-x),
trim(substring_index(substring_index(substring_index(s,',',-x),',',1),',',-1)) as w,
x-1 x
from cte1 where s<>'' and x>0
)
select * from cte1
DBFIDDLE
But it's a bit of a problem to determine the real problem you have, which is causing you to ask this question. So this is not an answer, but just a different way of selecting all words from a comma-delimted string.
How can i select only a part of a column ? I know I can use substring, but i need to select a string part of a column. As an example: Column can contain the following:
DIRL100
I need to select only the DIRL part in one column, and the 100 part as another.
I could do it with this specific column like so:
SELECT SUBSTRING(column, 5) AS part1,
SUBSTRING(column, 1, 4) AS part2 ....
But i cannot be sure that its always 4 letters (DIRL) before it gets numeric .. Can i somehow use REGEXP or something to extract only the numeric part and the letter part in each column ?
In other words.. Can i split a column by where the letters end. It could as an example contain DIRL100 or AB100200 which should be split into two columns each containing the letters from the column (DIRL or AB) and the digits from the column (100 or 100200) ?
Try this request:
SELECT LEFT(column, patindex('%[0-9]%', column)-1) AS Part1
, RIGHT(column, LEN(column) - patindex('%[0-9]%', column)+1) AS Part2
Unfortunately, the regexp functions in MySQL is limited. You have to write a custom function to help you.
DROP FUNCTION IF EXISTS get_index;
DELIMITER $$
CREATE FUNCTION get_index(targetString VARCHAR(255)) RETURNS INTEGER
BEGIN
DECLARE i INTEGER;
DECLARE min_index INTEGER;
DECLARE current_index INTEGER;
SET i = 0;
SET min_index = NULL;
loopNumbers: WHILE (i <= 9) DO
SET current_index = LOCATE(i, targetString);
IF current_index > 0 THEN
IF min_index IS NULL OR current_index < min_index THEN
SET min_index = current_index;
END IF;
END IF;
SET i = i + 1;
END WHILE;
RETURN(min_index);
END
$$
DELIMITER ;
What this function does is to obtain the first position of the numbers. Then using this function, you can modify your query to:
SELECT SUBSTRING(column_name FROM 1 FOR get_index(column_name)-1) AS first, SUBSTRING(column_name FROM get_index(column_name)) AS second
FROM table_name
WHERE column_name REGEXP '^[a-Z]+[0-9]+$'
The additional WHERE condition is optional to ensure that only data in the correct format is selected.
I am working on SQL Server 2008 to create a stored procedure that:
takes a string variable like this: '1,2,3'
splits the string using a table-valued function to get each value separately
and then inserts each value into a new row in a table
What I am trying to do is something like this:
WHILE (select vlaue FROM dbo.SplitString('1,2,3',',')) has rows
insert into TableName (col1,col2) values (col1Data, value)
I am having a hard time trying to find the right syntax for this.
I use this Table-valued function:
CREATE FUNCTION [dbo].[Split] (#sep char(1), #s varchar(512))
RETURNS table
AS
RETURN (
WITH Pieces(pn, start, stop) AS (
SELECT 1, 1, CHARINDEX(#sep, #s)
UNION ALL
SELECT pn + 1, stop + 1, CHARINDEX(#sep, #s, stop + 1)
FROM Pieces
WHERE stop > 0
)
SELECT pn,
SUBSTRING(#s, start, CASE WHEN stop > 0 THEN stop-start ELSE 512 END) AS s
FROM Pieces
)
GO
Which takes a string with a separator and returns a table with two columns the first returns a 1-based position and the second the element at that position in the string:
Usage:
SELECT * FROM dbo.Split(',', '1,2,3')
Returns:
pn s
1 1
2 2
3 3
To Insert results into a table:
INSERT INTO TableName (Col1)
SELECT S FROM dbo.Split(',', '1,2,3)
For your specific example change your syntax to be:
insert into TableName (col1,col2)
select col1Data, value FROM dbo.SplitString('1,2,3',',')
The typical INSERT INTO ... SELECT ... should do:
INSERT INTO TableName (col1,col2)
SELECT #col1Data,value FROM dbo.SplitString('1,2,3',','))
If someone else is looking for this, I was about to make a split function as several answers mentioned but noticed there's a built-in function that does this already.
string_split was added in MSSQL 2016.
INSERT INTO Project.FormDropdownAnswers (FkTableId, CreatedBy, CreatedDate)
SELECT 123, TRY_CAST(value AS INT), #username, getdate()
FROM string_split('44,45,46,47,55',',')
https://learn.microsoft.com/en-us/sql/t-sql/functions/string-split-transact-sql
CREATE TABLE tablename
(
id SMALLINT ,
value INT
)
INSERT INTO tablename ( id, value )
SELECT * FROM dbo.Split('1,2,3',',')
try this....
If need to use as variables there is 2 nice options:
Procedure MF_SPLIT
CREATE PROC [MF_SPLIT] (#ELS NVARCHAR(MAX)=NULL OUTPUT, #RET NVARCHAR(MAX)=NULL OUTPUT, #PROC NVARCHAR(MAX)=NULL) AS BEGIN
IF #ELS IS NULL BEGIN
PRINT ' #ELS
List of elements in string (OUTPUT)
#RET
Next return (OUTPUT)
#PROC
NULL = '','', content to do split
Example:
DECLARE #NAMES VARCHAR(100) = ''ERICK,DE,VATHAIRE''
DECLARE #N VARCHAR(100)
WHILE #NAMES IS NOT NULL BEGIN
EXEC MF_SPLIT #NAMES OUTPUT, #N OUTPUT
SELECT List = #NAMES, ActiveWord = #N
END'
RETURN
END
SET #PROC = ISNULL(#PROC, ',')
IF CHARINDEX(#PROC, #ELS) = 0 BEGIN
SELECT #RET = #ELS, #ELS = NULL
RETURN
END
SELECT
#RET = LEFT(#ELS, CHARINDEX(#PROC, #ELS) - 1)
, #ELS = STUFF(#ELS, 1, LEN(#RET) + 1, '')
END
Usage:
DECLARE #NAMES VARCHAR(100) = '1,2,3'
DECLARE #N VARCHAR(100)
WHILE #NAMES IS NOT NULL BEGIN
EXEC MF_SPLIT #NAMES OUTPUT, #N OUTPUT
SELECT List = #NAMES, ActiveWord = #N
END
Procedure MF_SPLIT_DO (Depends of MF_SPLIT), less sintax to use BUT the code will be in a string and use default variable "#X"
CREATE PROC MF_SPLIT_DO (#ARR NVARCHAR(MAX), #DO NVARCHAR(MAX)) AS BEGIN
--Less sintax
DECLARE #X NVARCHAR(MAX)
WHILE #ARR IS NOT NULL BEGIN
EXEC MF_SPLIT #ARR OUT, #X OUT
EXEC SP_EXECUTESQL #DO, N'#X NVARCHAR(MAX)', #X
END
END
Usage:
EXEC MF_SPLIT_DO '1,2,3', 'SELECT #X'
I have a column in table which has following values. Names are separed by comma..
ProjID Names
1 Adam , Babita Tripathy, Alex, Mihir , Farhad
2 SaravanaKumar, Shruthi, Arthi, Suneeth
I am passing input value to stored procedure to fetch values. The input value is multiple names. If input is (Arthi,SaravanaKumar) i need to get both the rows as result because ProjID 1 and 2 has one of the input names. How can i achive it. Please help..
Search Condition.
IF #Names<>''
SET #condition = #condition+' ProdType.NamesLIKE'''+'%'+RTRIM(#Names)+'%'' AND'
You can use a function to split he input string
IF EXISTS(SELECT * FROM sysobjects WHERE ID = OBJECT_ID('UF_CSVToTable'))
DROP FUNCTION UF_CSVToTable
GO
CREATE FUNCTION UF_CSVToTable
(
#psCSString VARCHAR(8000)
)
RETURNS #otTemp TABLE(sID VARCHAR(MAX))
AS
BEGIN
DECLARE #sTemp VARCHAR(10)
DECLARE #tTemp VARCHAR(10)
WHILE LEN(#psCSString) > 0
BEGIN
SET #sTemp = LEFT(#psCSString, ISNULL(NULLIF(CHARINDEX(',', #psCSString) - 1, -1),
LEN(#psCSString)))
SET #psCSString = SUBSTRING(#psCSString,ISNULL(NULLIF(CHARINDEX(',', #psCSString), 0),
LEN(#psCSString)) + 1, LEN(#psCSString))
INSERT INTO #otTemp(sID) VALUES (#sTemp)
END
RETURN
END
Go
It can be called like this.
select * from UF_CSVToTable('1,2,3,4,5,6,7,15,55,59,86')
SQL FIDDLE DEMO
I have a table with the following data in one column:
abc,2,2,34,5,3,2,34,32,2,3,2,2
def,2,2,34,5,3,2,34,32,2,3,2,2
I want to take this data and insert it into another table, using the commas as delimiters, just like how you can specify the FIELDTERMINATOR in BULK INSERT statements.
Is there a way to do this using T-SQL?
I'm not sure if there is any direct way to do in the T-SQL , but if you want to use Bulk Insert you can use sqlcmd to export to CSV file and then Import the file back into server using Bulk Insert.
Create a dbo.Split Functionm, you can refer here split string into multiple record
There are tons of good examples.
if you want to execute as batch process, You can execute sqlcmd and 'Bulk Insert'
sqlcmd -S MyServer -d myDB -E -Q "select dbo.Split(col1) from SomeTable"
-o "MyData.csv" -h-1 -s"," -w 700
-s"," sets the column seperator to
bulk insert destTable
from "MyData.csv"
with
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)
Otherwise, You can manipulate directly in the T-SQL, but given you have the same identify of columns definition.
INSERT INTO DestinationTable
SELECT dbo.Split(col1) FROM SomeTable
You need to use a Split function to split your string into a table variable, and then insert those values into your table.
There are tons of those split functions out there, with various pros and cons and various number of parameters and so forth.
Here is one that I quite like - very nicely done, clearly explained.
With that function, you should have no trouble converting your column into individual entries for your other table.
EDIT: allow multiple char separators
This is how I solved it, with two functions to do the splitting into columns (if you want a more complete solution with line splitting as well, see my other post here). It involves:
A scalar function (fSubstrNth) for extracting the n-th field of a line, given an separator
A scalar function (fPatIndexMulti) for finding the n-th index of the separator
(Optional) alternative Right function to accept negative values
Finally, some specific code to use in your solution, since SQL doesn't allow dynamic table-function definitions (in other words, you can't SELECT from a function with dynamic columns)
Now, for the code snippets:
fSubstrNth
-- =============================================
-- Author: Bernardo A. Dal Corno
-- Create date: 18/07/2017
-- Description: substring com 2 PatIndex limitando inicio e fim
-- =============================================
CREATE FUNCTION fSubstrNth
(
#Text varchar(max),
#Sep varchar(3),
#N int --Nth campo
)
RETURNS varchar(max)
AS
BEGIN
DECLARE #Result varchar(max)
IF #N<1 RETURN ''
IF #N=1
SET #Result = substring(#Text, 1, dbo.fPatIndexMulti(#Sep,#Text,1)-1)
ELSE
SET #Result = substring(#Text, dbo.fPatIndexMulti(#Sep,#Text,#N-1)+LEN(#Sep), CASE WHEN dbo.fPatIndexMulti(#Sep,#Text,#N)>0 THEN dbo.fPatIndexMulti(#Sep,#Text,#N)-dbo.fPatIndexMulti(#Sep,#Text,#N-1)-LEN(#Sep) ELSE LEN(#Text)+1 END)
RETURN #Result
END
fPatIndexMulti
-- =============================================
-- Author: Bernardo A. Dal Corno
-- Create date: 17/07/2017
-- Description: recursive patIndex
-- =============================================
CREATE FUNCTION [dbo].[fPatIndexMulti]
(
#Find varchar(max),
#In varchar(max),
#N tinyint
)
RETURNS int
AS
BEGIN
DECLARE #lenFind int, #Result int, #Texto varchar(max), #index int
DECLARE #i tinyint=1
SET #lenFind = LEN(#Find)-1
SET #Result = 0
SET #Texto = #In
WHILE (#i <= #N) BEGIN
SET #index = patindex('%'+#Find+'%',#Texto)
IF #index = 0 RETURN 0
SET #Result = #Result + #index
SET #Texto = dbo.xRight(#Texto, (#index + #lenFind)*-1)
SET #i = #i + 1
END
SET #Result = #Result + #lenFind*(#i-2)
RETURN #Result
END
xRight
-- =============================================
-- Author: Bernardo A. Dal Corno
-- Create date: 06/01/2015
-- Description: Right inverso (para nros < 0)
-- =============================================
CREATE FUNCTION [dbo].[xRight]
(
#Texto varchar(8000),
#Qntd int
)
RETURNS varchar(8000)
AS
BEGIN
DECLARE #Result varchar(8000)
IF (Len(#Texto) = 0) OR (#Qntd = 0)
SET #Result = ''
ELSE IF (#Qntd > 0)
SET #Result = Right(#Texto, #Qntd)
ELSE IF (#Qntd < 0)
SET #Result = Right(#Texto, Len(#Texto) + #Qntd)
RETURN #Result
END
Specific code
SELECT
acolumn = 'any value',
field1 = dbo.fSubstrNth(table.datacolumn,',',1),
field2 = dbo.fSubstrNth(table.datacolumn,',',2),
anothercolumn = 'set your query as you would normally do',
field3 = (CASE dbo.fSubstrNth(table.datacolumn,',',3) WHEN 'C' THEN 1 ELSE 0 END)
FROM table
Note that:
fSubstrNth receives the n-th field to extract from the 'datacolumn'
The query can be as any other. This means it can be stored in a procedure, tabled-function, view, etc. You can extract some or all fields, in any order you wish, and process however you want
If used in a stored procedure, you could create a generic way of creating a query and temp table that loads the string with dynamic columns, but you have to make a call to another procedure to use the data OR create a specific query like above in the same procedure (which would make it non-generic, just more reusable)