php - MySQL "REPLACE INTO" using a SELECT to pull one field -

-


php - MySQL "REPLACE INTO" using a SELECT to pull one field -

i've got mysql database has 2 tables (actually many more). first table links product's sku number arbitrary id. there sec table records end of day inventory each item based on id. when inventory changed reasons other sales, there record placed in sec table boolean set false. allows me new number not valid vector sales previous, next day's sales.

there syntax error in code. i'm still student, , appreciate help in explaining how kind of update work. know first value needs come select statement?

here current mysql statement:

replace sales (`itemid`, `date`, `qty`, `price`) values ([itemid], curdate(), [qty], 0.00) select itemid item `sku` = [sku]

replace works insert, except if there row same key trying insert, deleted on replace instead of giving error.

you can either specify arguments directly:

replace sales( `item_id`, `date`, `qty`, `price` ) values( 15, '2012-01-01`, 5, '120.00' )

or specify them using select:

replace sales( `item_id`, `date`, `qty`, `price` ) select item_id, date, qty, cost sales_to_accept sales_id = 721

you cannot mix both types of syntax in 1 query.

but there nil stopping adding constant values columns select:

replace sales( `item_id`, `date`, `qty`, `price` ) select item_id, curdate(), 5, '74.00' item `sku` = 'something'

php mysql

Comments

Post a Comment

Popular posts from this blog

delphi - blogger via idHTTP : error 400 bad request -

-
delphi - blogger via idHTTP : error 400 bad request - i'm trying post blogger using idhttp component, however, i'm getting "http/1.0 400 bad request" error. procedure tform1.button1click(sender: tobject); var request,response,req : tstringlist; auth,blogid : string; begin blogid := '00000000000000000000000'; request := tstringlist.create; response := tstringlist.create; req := tstringlist.create; idhttp1.request.connection := 'keep-alive'; idhttp1.request.contenttype := 'application/x-www-form-urlencoded'; idssliohandlersocket1.ssloptions.method := sslvsslv23; request.clear(); request.values['accounttype'] := 'google'; request.values['email'] := 'xxx@gmail.com'; request.values['passwd'] := 'yyy'; request.values['service'] := 'blogger'; response.text :=idhttp1.post('https://www.google.com/accounts/clientlogin',request); auth := resp...
Read more

c++ - cuda, pycuda -- how to write complex numbers -- errors:class "cuComplex" has no member "i" -

-
c++ - cuda, pycuda -- how to write complex numbers -- errors:class "cuComplex" has no member "i" - i have difficulties utilize complex numbers in cuda,pycuda. i have in c: #include <complex> typedef std::complex<double> cmplx; .... cmplx j(0.,1.); also,in same code: #include <boost/python.hpp> #include <boost/array.hpp> ... typedef std::vector< boost::array<std::complex<double>,3 > > complexfieldtype; typedef std::vector< boost::array<double,3> > realfieldtype; ... __global__ void compute(realfieldtype const & rs,complexfieldtype const & m,..) ... how can convert utilize pycuda? tried sth (according book 'cuda example'): struct cucomplex { float real; float imag; cucomplex(float a,float b): real(a),imag(b){} cucomplex operator *(const cucomplex& a) { homecoming cucomplex(real*a.real -imag*a.imag ,imag*a.real +real*a.imag); } cucomplex operat...
Read more

How do I check if an insert was successful with MySQLdb in Python? -

-
How do I check if an insert was successful with MySQLdb in Python? - i have code: cursor = conn.cursor() cursor.execute(("insert new_files (videos_id, filename, " "is_processing) values (%s,%s,1)"), (id, filename)) logging.warn("%d", cursor.rowcount) if (cursor.rowcount == 1): logging.info("inserted values %d, %s", id, filename) else: logging.warn("failed insert values %d, %s", id, filename) cursor.close() fun is, cursor.rowcount always one, though updated database create videos_id unique key. is, insert fails because in tests same videos_id going appear (and when check database, nil inserted). whatever reason, rowcount 1 - logging.warn have spits out rowcount of 1. so, question: can utilize rowcount work out if insert went fine? if so, (presumably) doing wrong? otherwise, how check if insert went fine? your code not commit after modifications (your modifications rolled back). should...
Read more