Robot framework : Database library keywords not getting executed - postgresql

Question

I recently started working with Robot framework. So I had a requirement where I needed to connect with Postgres db.
So though I am able to connect with the db but then when I try to execute queries, the flow is getting stuck. Even the test is not failing. Following is what I did:
Connect To Database psycopg2 ${DBName} ${DBUser} ${DBPass} ${DBHost} ${DBPort}
${current_row_count} = Row Count Select * from xyz
The first statement is executing fine but then it gets stuck on second statement.
Can somebody help me out on this

Answer 1

To Execute Query and get data from result :
Connect To Database psycopg2 ${DBName} ${DBUser} ${DBPass} ${DBHost} ${DBPort}
${output} = Query SELECT * from xyz;
Log ${output}
${DataResults}= Get from list ${output} 0
${DataResults}= Convert to list ${DataResults}
${DataResults}= Get from list ${DataResults} 0
${DataResults} convert to string ${DataResults}
Disconnect From Database

Answer 2

You are not executing your query.... read below a bit documentation and an example ;)
In the example you can see example variable but introduce your data ;)
Name: Connect To Database Using Custom Params
Source: DatabaseLibrary
Arguments:
[ dbapiModuleName=None | db_connect_string= ]
Loads the DB API 2.0 module given dbapiModuleName then uses it to connect to the database using the map string db_custom_param_string.
Example usage Example usage: :
Connect To Database Using Custom Params pymssql database='${db_database}' , user='${db_user}', password='${db_password}', host='${db_host}'
${queryResults} Query ${query}
Disconnect From Database