ADF: Pass dynamic Where Clause as a string with quotes - azure

Question

I have a lookup that retrieves a few records from a SQL Server table containing server, database, schema, table name and a whole where clause. These values are passed to a copy data (within a ForEach) In the copy data i have tried to use two different Dynamic query statement, but I seem to get an error. And can't figure out where I'm going wrong.
Values in table:
SRC_SERVERNAME
SRC_DATABASE
SRC_SCHEMANAME
SRC_TABLENAME
SRC_WHERE_DATE_CLAUSE
SQ01
NAV
dbo
Company$Sales Invoice Header
where [Posting Date] >= '2021-01-01'
Source setup:
Error for statement 1:
A database operation failed with the following error: 'Incorrect syntax near '.'.'
Incorrect syntax near '.'., SqlErrorNumber=102,Class=15,State=1,
Error for statement 2:
A database operation failed with the following error: 'Incorrect syntax near '.'.'
Incorrect syntax near '.'., SqlErrorNumber=102,Class=15,State=1,
Statement 1 (query):
SELECT *
FROM #{item().SRC_SERVERNAME}.#{item().SRC_DATABASENAME}.#{item().SRC_SCHEMANAME}.#{item().SRC_TABLENAME},' ',#{item().SRC_WHERE_DATE_CLAUSE}
Statement 2 (dynamic query with concat):
#concat('select * from ',item().SRC_SERVERNAME,'.',item().SRC_DATABASENAME,'.',item().SRC_SCHEMANAME,'.',item().SRC_TABLENAME,' ',item().SRC_WHERE_DATE_CLAUSE)

Answer 1

There is a syntax error in your query.
In the 4-part naming of SQL database, server name/database name/schema name/table name should be separated by ‘.’.
When you have space or other special characters in the name of server/database/schema/table, they should be embedded inside square braces [].
#concat('select * from [',item().SRC_SERVERNAME, '].[',item().SRC_DATABASENAME,'].[',item().SRC_SCHEMANAME,'].[',item().SRC_TABLENAME, '] ',item().SRC_WHERE_DATE_CLAUSE)