Get all string between parentheses in SQL SERVER

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i have dynamic string like

SQL

DECLARE @string NVARCHAR(MAX)='Dear {CustomerName},Your invoice ({InvoiceNumber}) has been created. An overview of the invoice is available below:Invoice: {InvoiceNumber}Invoice Date: {InvoiceDate}Amount: {GrandTotal}Please go through it and confirm the invoice. We look forward to working with you again.Regards,Accounts Team{FirmName}'

i need all value between {}
eg
CustomerName,InvoiceNumber,InvoiceDate,GrandTotal

What I have tried:

SQL

;WITH yourTable AS (
    SELECT 'Dear {CustomerName},Your invoice ({InvoiceNumber}) has been created. An overview of the invoice is available below:Invoice: {InvoiceNumber}Invoice Date: {InvoiceDate}Amount: {GrandTotal}Please go through it and confirm the invoice. We look forward to working with you again.Regards,Accounts Team{FirmName}' AS col
)

SELECT
    SUBSTRING(col,
              CHARINDEX('{', col) + 1,
              CHARINDEX('}', col) - CHARINDEX('{', col) - 1) AS output
FROM yourTable;

Posted 10-Jan-22 20:45pm

mohit.a44

Updated 10-Jan-22 23:05pm

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Richard Deeming · Answer 1 · 2022-01-10T21:59:00

Something like this should work:

SQL

DECLARE @string NVARCHAR(MAX) = N'Dear {CustomerName},Your invoice ({InvoiceNumber}) has been created. An overview of the invoice is available below:Invoice: {InvoiceNumber}Invoice Date: {InvoiceDate}Amount: {GrandTotal}Please go through it and confirm the invoice. We look forward to working with you again.Regards,Accounts Team{FirmName}'

WITH cteTally As
(
    -- TODO: Use a tally table here if you have one.
    SELECT TOP (LEN(@string))
        ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) As RN
    FROM
        sys.all_columns
),
cteIndices As
(
    SELECT
        S.RN As StartIndex,
        CHARINDEX('}', @string, S.RN + 1) As EndIndex
    FROM
        cteTally As S
    WHERE
        SUBSTRING(@string, S.RN, 1) = '{'
)
SELECT DISTINCT
    SUBSTRING(@string, StartIndex + 1, EndIndex - StartIndex - 1)
FROM
    cteIndices
WHERE
    EndIndex > StartIndex + 1
;

Output:

CustomerName
FirmName
GrandTotal
InvoiceDate
InvoiceNumber

Maciej Los · Answer 2 · 2022-01-10T23:05:00

Using table and one CTE:

SQL

CREATE TABLE TempData
(
  LongText VARCHAR(MAX)
);

INSERT INTO TempData (LongText)
VALUES ('Dear {CustomerName},Your invoice ({InvoiceNumber}) has been created. An overview of the invoice is available below:Invoice: {InvoiceNumber}Invoice Date: {InvoiceDate}Amount: {GrandTotal}Please go through it and confirm the invoice. We look forward to working with you again.Regards,Accounts Team{FirmName}')

;WITH CTE AS
(
  SELECT 1 AS RN, LongText, CHARINDEX('{', LongText)+1 AS StartPos, CHARINDEX('}', LongText)-1 AS EndPos
  FROM TempData
  WHERE CHARINDEX('{', LongText)>0 AND CHARINDEX('}', LongText)>0
  UNION ALL
  SELECT RN + 1 AS RN, LongText, CHARINDEX('{', LongText, StartPos)+1 AS StartPos, CHARINDEX('}', LongText, EndPos+2)-1 AS EndPos
  FROM CTE
  WHERE CHARINDEX('{', LongText, StartPos)>0 AND CHARINDEX('}', LongText, EndPos+2)>0
)
SELECT RN, SUBSTRING(LongText, StartPos, EndPos - StartPos+1) AS TextBetweenParenthesis
FROM CTE;

Result:

RN 	TextBetweenParenthesis
1 	CustomerName
2 	InvoiceNumber
3 	InvoiceNumber
4 	InvoiceDate
5 	GrandTotal
6 	FirmName

SQL Server 2019 | db<>fiddle[^]

Get all string between parentheses in SQL SERVER

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