SQL Server добавление переменной

Question

Как добавить переменную в SQL Server для замены %MV_AUG2019.json%, чтобы мне нужно было изменить ее только в одном месте для всех этих таблиц?

delete from [addresses] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [disabilities] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [MD] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [messages] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [MH] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [MV] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [permits] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [PP] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [registrationOwners] where [uniqueFilename] like '%MV_AUG2019.json%'
delete from [stops] where [uniqueFilename] like '%MV_AUG2019.json%'

Answer 1

Бьюсь об заклад, вы просто после ->

DECLARE @FileName NVARCHAR(500) = 'MV_AUG2019.json'

delete from [addresses] where [uniqueFilename] like '%'+@FileName+'%'

Answer 2

Вы должны объявить переменную следующим образом:

DECLARE @var NVARCHAR(1000) = 'name.json' -- provide file name here

delete from [addresses] where [uniqueFilename] like '%' + @var + '%'

Answer 3

вы можете генерировать таблицы в динамическом

DECLARE @FileName NVARCHAR(500) = 'MV_AUG2019.json'

SELECT 'DELETE FROM '+QUOTENAME(TABLE_NAME) +' WHERE '+ QUOTENAME(COLUMN_NAME)+ ' LIKE '+'''%'+ @FileName+'%'''
FROM  INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME ='uniqueFilename' AND DATA_TYPE IN ('char','nvarchar','varchar')