-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 yoky wrote: > I create a table include about 200 columns,
http://en.wikipedia.org/wiki/Database_normalization > like "insert into tablename (Field1,Field2,Field3,...........) values > (Value1,Value2,Value3.............)" ,and it's length is more than 4000, > Then invoke > sqlite3_prepare() and sqlite3_step(). Use bindings. Instead of the values put in ?. (You can also use numbers such as ?7 or names such as :name1 or $name2). You only need to call sqlite3_prepare once. Then on each run call sqlite3_reset which sets all bindings to null. Use sqlite3_bind_parameter_count to find out how many bindings there are, sqlite3_bind_parameter_name to get the name of a binding or sqlite3_bind_parameter_index to get the number of a named binding, and finally sqlite3_bind functions to bind values as appropriate: http://www.sqlite.org/c3ref/bind_blob.html (Also using sprintf/strcat is almost a guarantee that you will eventually have buffer overruns or SQL injection attacks.) > Are there some useful methods to improve the efficiency of insert one > record? > And there is a little tips about debug with Microsoft VS2005. When the > number of lines of a source file is more than 65535, the Debugger may out > of action. The easiest solution is to get a decent development environment :-) If you have to use one with issues like that then stripping the comments from the source will give you a file smaller than 65535 lines. See the attachment at the bottom of http://www.sqlite.org/cvstrac/tktview?tn=3344 for a small program that will do that. Roger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkkBBsMACgkQmOOfHg372QS20wCfZDLIhLigXaa8NGiDV/dg3BMv inQAnj9J3xvrTM7oydMrbaxP8igsYXRR =FQGf -----END PGP SIGNATURE----- _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
