SQL Declare Variable equivalent in databricks - azure-databricks

Question

Can someone let me know if there is an DECLARE equivalent in Databricks SQL
The SQL Code that I have trying to execute with Databricks SQL is as follows:
DECLARE
#EnrichedViewDatabase sysname,
#EnrichedViewSchema sysname,
#EnrichedColumnSuffix varchar(50),
#LanguageCode varchar(10),
#BaseTableSuffix varchar(50),
#PreviewOnly bit, --Indicate whether to preview the SQL Script (without creating the views) = 1 ; Create views = 0;
#CurrentDatabase sysname,
#CurrentDatabaseSchema sysname
SET #EnrichedViewDatabase = 'mydatabasenr1'
SET #EnrichedViewSchema = 'dbo'
SET #EnrichedColumnSuffix = 'code'
SET #LanguageCode = 1033
SET #BaseTableSuffix = ''
SET #PreviewOnly = 0
SET #CurrentDatabase = 'mydatabasenr2'
SET #CurrentDatabaseSchema = 'dbo'
DECLARE #ColumnMetadata nvarchar(MAX), #ColumnMetadataSQL nvarchar(MAX)
The above SQL gives me the following error:
mismatched input 'DECLARE'
== SQL ==
DECLARE
^^^
#EnrichedViewDatabase sysname,
#EnrichedViewSchema sysname,
#EnrichedColumnSuffix varchar(50),
#LanguageCode varchar(10),
#BaseTableSuffix varchar(50),
#PreviewOnly bit, --Indicate whether to preview the SQL Script (without creating the views) = 1
Any thoughts?

Answer 1

DECLARE is not supported in Databricks SQL. The equivalent code to the one which you are trying to achieve in the above case would be to use SET directly.
%sql
SET EnrichedViewDatabase = 'mydatabasenr1';
SET EnrichedViewSchema = 'dbo';
SET EnrichedColumnSuffix = 'code';
SET LanguageCode = 1033;
SET BaseTableSuffix = '';
SET PreviewOnly = 0 ;
SET CurrentDatabase = 'mydatabasenr2';
SET CurrentDatabaseSchema = 'dbo';
SET returns a key-value pair as result. To access the value using the respective key (assigned in the above procedure), you can do it in the following way:
%sql
select ${hiveconf:CurrentDatabase} as x,${hiveconf:EnrichedViewDatabase} as y,${hiveconf:LanguageCode} as z