Hi Eric and Dan,
I'm not sure whether what I'm searching for does already exist (or will ever)
-- that's why I'm asking.
I have to create multiple times a new column in a DB. Being LP-minded, I wanna
describe the code, tangle it, and be able to execute it at the client side.
Here my generic code for create a new column:
--8<---------------cut here---------------start------------->8---
#+srcname: add-column-in-table.sql(pTable,pColumn,pDatatype,pAcceptnullvalues)
#+begin_src sql
-- add column `pfiDossierSentToSecteur' (if column does not exist yet)
IF NOT EXISTS (SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'pTable'
AND COLUMN_NAME = 'pColumn)
BEGIN
ALTER TABLE pTable
ADD pColumn pDatatype pAcceptnullvalues
END
GO
#+end_src
--8<---------------cut here---------------end--------------->8---
Is there a way to tangle it with some string replacements being made, such as:
| pTable | dossier |
| pColumn | pfiNew |
| pDatatype | string |
| pAcceptnullvalues | NULL |
I've tried the following, with no success:
--8<---------------cut here---------------start------------->8---
#+srcname:
add-column-in-table(pTable=dossier,pColumn=pfiNew,pDatatype=string,pAcceptnullvalues=NULL)
#+begin_src sql :tangle dossier.sql
-- add column `pfiDossierSentToSecteur' (if column does not exist yet)
IF NOT EXISTS (SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'pTable'
AND COLUMN_NAME = 'pColumn)
BEGIN
ALTER TABLE pTable
ADD pColumn pDatatype pAcceptnullvalues
END
GO
#+end_src
--8<---------------cut here---------------end--------------->8---
Is such a feature supported, or another way to come down to the same result?
Best regards,
Seb
--
Sébastien Vauban
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