gasraparts.blogg.se - Qt sqlite database example

Qt sqlite database example how to#
Qt sqlite database example generator#
Qt sqlite database example full#
Qt sqlite database example zip#

SQL that do not deliver data (no rows, no columns) will display a popup message instead (for example using the VACUUM command).

Fast, even with several thousands of rows (see Track report).

Double click on a row and a new Window will display the row vertically, usefull for rows with many columns.

Multi-line fields will display in a separate Window when you click on the cell containing multiline data (which cannot be displayed in a listview, if you click on a normal cell, the window will disapear.

Up to 2 dynamic Parameters via input dialog box per report.

I created 20 different reports, from which 4 are system reports and one is not linked to any table. You can download the zipfile in the link hereunder.

Qt sqlite database example zip#

All required files are contained in the zip file.

Qt sqlite database example full#

I provide a full functional example using the Chinook Demo Database ( ), so everyone can test it. Single Date, period, string or number input are possible The script supports up to two dynamic parameters per report, see the 'SQLite Reports.ini' file for more details.

Qt sqlite database example generator#

If the database does not exist, then it will be created and finally a database object will be returned.This is a Report Generator for SQLite Database.

Qt sqlite database example how to#

If any queries remain that have not been finalized, sqlite3_close() will return SQLITE_BUSY with the error message Unable to close due to unfinalized statements.įollowing C code segment shows how to connect to an existing database. All prepared statements associated with the connection should be finalized prior to closing the connection. Sqlite3_close(sqlite3*)This routine closes a database connection previously opened by a call to sqlite3_open(). SQLite3_exec() routine parses and executes every command given in the sql argument until it reaches the end of the string or encounters an error. Here, the first argument sqlite3 is an open database object, sqlite_callback is a call back for which data is the 1st argument and errmsg will be returned to capture any error raised by the routine. Sqlite3_exec(sqlite3*, const char *sql, sqlite_callback, void *data, char **errmsg)This routine provides a quick, easy way to execute SQL commands provided by sql argument which can consist of more than one SQL command. If no file by that name exists, sqlite3_open() will open a new database file by that name. If the filename is not NULL, sqlite3_open() attempts to open the database file by using its value. If the filename argument is NULL or ':memory:', sqlite3_open() will create an in-memory database in RAM that lasts only for the duration of the session. Sqlite3_open(const char *filename, sqlite3 **ppDb)This routine opens a connection to an SQLite database file and returns a database connection object to be used by other SQLite routines. If you are looking for a more sophisticated application, then you can look into SQLite official documentation. C/C++ Interface APIsįollowing are important C/C++ SQLite interface routines, which can suffice your requirement to work with SQLite database from your C/C++ program. You can check SQLite Installation chapter to understand the installation process. Installationīefore you start using SQLite in our C/C++ programs, you need to make sure that you have SQLite library set up on the machine.

In this section, you will learn how to use SQLite in C/C++ programs.