Question

I have the following string expression in a PowerShell script:

'select count(*) cnt from ${schema}.${table} where ${col.column_name} is null' 

The schema and table resolve to the values of $schema and $table, respectively. However, an empty string is supplied for ${col.column_name}. How can I dot into the member of a variable as part of a string substitution?

Answer 1

How about:

'select count(*) cnt from $schema.$table where $($col.column_name) is null'