Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Thanks all for your ideas. Though wired, I reinstalled the Postgres and tried again. This error message disappears. The parser now works good. On 3 June 2011 01:13, Alvaro Herrera alvhe...@commandprompt.com wrote: Excerpts from HuangQi's message of jue jun 02 11:17:21 -0400 2011: Hi, thanks a lot for your ideas. But I've done all these things. I've checked the gram.y and kwlist.h files many times but can not find what's wrong. So is there any possibility that the problem comes from something after parser, though it seems it should comes from parser? If you want more input, post the patch. -- Álvaro Herrera alvhe...@commandprompt.com The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Best Regards Huang Qi Victor
[HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? -- Best Regards Huang Qi Victor
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Hello you should to add new keywords to postgresql/src/include/parser/kwlist.h (depends on pg version) attention - keywords must be in alphabet order Regards Pavel Stehule 2011/6/2 HuangQi huangq...@gmail.com: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? -- Best Regards Huang Qi Victor -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Yes, I've also added mergejoin to kwlist.h as unreserved_keyword. In order to build AST, I also keep a new node struct in planoperators.h and a new node tag inside nodes.h. On 2 June 2011 15:49, Pavel Stehule pavel.steh...@gmail.com wrote: Hello you should to add new keywords to postgresql/src/include/parser/kwlist.h (depends on pg version) attention - keywords must be in alphabet order Regards Pavel Stehule 2011/6/2 HuangQi huangq...@gmail.com: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? -- Best Regards Huang Qi Victor -- Best Regards Huang Qi Victor
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Hello 2011/6/2 HuangQi huangq...@gmail.com: Yes, I've also added mergejoin to kwlist.h as unreserved_keyword. In order to build AST, I also keep a new node struct in planoperators.h and a new node tag inside nodes.h. then recheck alphabet order of keywords, else recheck bison rules. Pavel On 2 June 2011 15:49, Pavel Stehule pavel.steh...@gmail.com wrote: Hello you should to add new keywords to postgresql/src/include/parser/kwlist.h (depends on pg version) attention - keywords must be in alphabet order Regards Pavel Stehule 2011/6/2 HuangQi huangq...@gmail.com: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? -- Best Regards Huang Qi Victor -- Best Regards Huang Qi Victor -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
On 06/02/2011 03:28 AM, HuangQi wrote: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? Without seeing your grammar changes and the statement you're trying to execute it's pretty much impossible to tell. cheers andrew -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
On 02.06.2011 15:16, Andrew Dunstan wrote: On 06/02/2011 03:28 AM, HuangQi wrote: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? Without seeing your grammar changes and the statement you're trying to execute it's pretty much impossible to tell. Yeah. One more guess is that you didn't include the keyword in the keyword list at the end of gram.y. There's script to check various keyword-related things at src/tools/check_keywords.pl -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Hi, thanks a lot for your ideas. But I've done all these things. I've checked the gram.y and kwlist.h files many times but can not find what's wrong. So is there any possibility that the problem comes from something after parser, though it seems it should comes from parser? On 2 June 2011 21:14, Heikki Linnakangas heikki.linnakan...@enterprisedb.com wrote: On 02.06.2011 15:16, Andrew Dunstan wrote: On 06/02/2011 03:28 AM, HuangQi wrote: Hi, I'm doing a hacking project which hacks the gram.y file and some other so that postgres can execute some query plan language to run a particular plan. I did some modifications and try run it. It compiled and installed successfully. But when I was trying to run a MergeJoin operation with keyword MERGEJOIN, it says ERROR: syntax error at or near 'MERGEJOIN'. It seems postgres didn't recognize this keyword. Is it caused by any error inside gram.y? Or how can I trace this error? Without seeing your grammar changes and the statement you're trying to execute it's pretty much impossible to tell. Yeah. One more guess is that you didn't include the keyword in the keyword list at the end of gram.y. There's script to check various keyword-related things at src/tools/check_keywords.pl -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Best Regards Huang Qi Victor
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
Excerpts from HuangQi's message of jue jun 02 11:17:21 -0400 2011: Hi, thanks a lot for your ideas. But I've done all these things. I've checked the gram.y and kwlist.h files many times but can not find what's wrong. So is there any possibility that the problem comes from something after parser, though it seems it should comes from parser? If you want more input, post the patch. -- Álvaro Herrera alvhe...@commandprompt.com The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Hacking gram.y Error syntax error at or near MERGEJOIN
On Thu, Jun 2, 2011 at 11:17 AM, HuangQi huangq...@gmail.com wrote: Hi, thanks a lot for your ideas. But I've done all these things. I've checked the gram.y and kwlist.h files many times but can not find what's wrong. So is there any possibility that the problem comes from something after parser, though it seems it should comes from parser? It seems very unlikely, but you could probably find out the answer yourself by using a debugger. Set a breakpoint on errfinish and see where the error gets thrown from. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
