Re: ResultSetMetaData question
On 04/07/2022 16:21, Rick Hillegas wrote: I'm afraid I don't understand your results. When I run your experiment, "2" is the name and label of the second column of the query "SELECT country,count(*) FROM customer GROUP BY country ORDER BY country". Does the following give you what you want: SELECT country,count(*) AS "count(*)" FROM customer GROUP BY country ORDER BY country What I'm after if I have "x AS y" is a way of getting "x". I understood (incorrectly as it seems) that getColumnName() would give "x" and getColumnLabel() would give "y". As far as I can tell from experiments, both methods ALWAYS produce identical results. So I'm no longer sure why two different methods exist. -- John English -- This email has been checked for viruses by AVG. https://www.avg.com
Re: ResultSetMetaData question
I'm afraid I don't understand your results. When I run your experiment, "2" is the name and label of the second column of the query "SELECT country,count(*) FROM customer GROUP BY country ORDER BY country". Does the following give you what you want: SELECT country,count(*) AS "count(*)" FROM customer GROUP BY country ORDER BY country On 7/4/22 6:01 AM, John English wrote: I have a query SELECT COUNT(*) AS X FROM ... If I use ResultMetaData.getColumnLabel(), I get "X". If I use ResultMetaData.getColumnName(), I also get "X". Here is the output from a test program: Query: SELECT country,count(*) FROM customer GROUP BY country ORDER BY country Name = COUNTRY Label = COUNTRY Name = COUNT(*) Label = COUNT(*) columns = COUNT(*), COUNTRY Query: select country, count(*) as customers from customer group by country order by country asc Name = COUNTRY Label = COUNTRY Name = CUSTOMERS Label = CUSTOMERS columns = COUNTRY, CUSTOMERS I was hoping/expecting that getColumnName() would return "COUNT(*)" in the second case. Is there any way to get COUNT(*) short of parsing the query myself? Thanks,
ResultSetMetaData question
I have a query SELECT COUNT(*) AS X FROM ... If I use ResultMetaData.getColumnLabel(), I get "X". If I use ResultMetaData.getColumnName(), I also get "X". Here is the output from a test program: Query: SELECT country,count(*) FROM customer GROUP BY country ORDER BY country Name = COUNTRY Label = COUNTRY Name = COUNT(*) Label = COUNT(*) columns = COUNT(*), COUNTRY Query: select country, count(*) as customers from customer group by country order by country asc Name = COUNTRY Label = COUNTRY Name = CUSTOMERS Label = CUSTOMERS columns = COUNTRY, CUSTOMERS I was hoping/expecting that getColumnName() would return "COUNT(*)" in the second case. Is there any way to get COUNT(*) short of parsing the query myself? Thanks, -- John English -- This email has been checked for viruses by AVG. https://www.avg.com
