[HACKERS] name.c

in name.c file in source code of postgresql I find some fuctions that I don't know where did use them? the functions are: int namecpy(Name n1, Name n2){..} int namecat(Name n1, Name n2){..} int namecmp(Name n1, Name n2){..} int namestrcpy(Name name, const char *str){..} int namestrcat(Name name, co

[HACKERS] palloc0

if I don't dalloc parameters that allocated with palloc0 then will free the allocated memory at the end of transaction?

[HACKERS] Name type in postgres

hello. I want do understand that did can we have name without null-terminator? in src/backend/util/adt/name.c in nameout() function is: Names = PG_GETARG_NAME(0); PG_RETURN_CSTRING(pstrdup(NameStr(*s))); what do the pstrdup() function? do this function create string from name with null-term

[HACKERS] COPY TO

hello. in copy.c is one function that its name is CopyOneRowTO. in this function have one foreach loop. in this loop first if have this condition: !cstate->binary what means this condition and when true this condition? thank you.

[HACKERS] using testlo example of postgres source code

I work in linux I want use testlo.c in client side that testlo.c is in src/test/example/ address of postgresql source code. I run make in /src/test/example/ then copy executable file(testlo) in lib directory of installation directory of postgresql. now I don't know how do I can use this execute lib

[HACKERS] when construct new tuple for update?

hi I want that find where did a new tuple data construct in postgresql code when query is update. I find that ExecModiryTable is an upper function for do it. but I want to find exact place that create the data of one row of table. can you help me?

[HACKERS] create index does change pages?

hello. dose one create index on the large table changes the place of some tuples in some pages?

[HACKERS] LogSwitch

what is log switch and when it occur ?

[HACKERS] WAL

hello. I am reading about WAL and XLOG records. I am beginner in them. can you direct me and give me some document?

[HACKERS] WAL and XLOG

hello. I am reading about WAL and XLOG records. I am beginner in them. can you direct me and give me some document? I want to know what did save in XLOG records exactly and who can create XLOG records?

[HACKERS] postgresMain() function

hello . In Postgres.c we have a switch for firstchar . one of case of them is : case 'Q' that is for simple queries. I want to know the other cases were for what operations . and: is the case with 'Q' parameter for DDL and DML commands?