db_query

warning

The function starts with a lowercase letter.

Description

The function is used to execute an SQL query on an opened SQLite database.

NameDescription
DB:dbThe database handle to query.
query[]The query to execute.

Returns

The query result index (starting at 1) if successful, otherwise 0.

Examples

// entity_storage.inc
EntityStorage_SpawnAll(DB:connectionHandle)
{
// Select all entries in table "entities"
new DBResult:db_result_set = db_query(db_handle, "SELECT * FROM `entities`");
// If database result set handle is valid
if (db_result_set)
{
// Do something...
// Free the result set
db_free_result(db_result_set);
}
}
// mode.pwn
#include <entity_storage>
static DB:gDBConnectionHandle;
// ...
public OnGameModeInit()
{
// ...
// Create a connection to a database
gDBConnectionHandle = db_open("example.db");
// If connection to the database exists
if (gDBConnectionHandle)
{
// Successfully created a connection to the database
print("Successfully created a connection to database \"example.db\".");
EntityStorage_SpawnAll();
}
else
{
// Failed to create a connection to the database
print("Failed to open a connection to database \"example.db\".");
}
// ...
return 1;
}
public OnGameModeExit()
{
// Close the connection to the database if connection is open
if (db_close(gDBConnectionHandle))
{
// Extra cleanup
gDBConnectionHandle = DB:0;
}
// ...
return 1;
}

Notes

warning

Always free results by using db_free_result!

Related Functions

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