mysql_select_db - Online Linux Manual PageSection : 3
Updated :
Source : Version 3.2.2
Note : MariaDB Connector/C
Namemysql_select_db − selects a database as default
Synopsis
#include <mysql.h>
int mysql_select_db(MYSQL * mysql,
const char * db);
DescriptionSelects a database as default. Returns zero on success, non−zero on failure
Parameters• mysql is a connection identifier, which was previously allocated by mysql_init(3) and connected by mysql_real_connect(3). • db − the default database name
Notes• To retrieve the name of the default database either execute the SQL command SELECT DATABASE() or retrieve the value via mariadb_get_infov(3) API function. • The default database can also be set by the db parameter in mysql_real_connect(3).
Examples
SQL
# switch to default database test
USE test;
# check default database
SELECT DATABASE();
+−−−−−−−−−−−−+
| database() |
+−−−−−−−−−−−−+
| test |
+−−−−−−−−−−−−+
MariadDB Connector/C
static int set_default_db(MYSQL *mysql)
{
int rc;
char *default_db;
/* change default database to test */
rc= mysql_select_db(mysql, "test");
if (rc)
return rc; /* Error */
/* get the default database */
rc= mariadb_get_infov(mysql, MARIADB_CONNECTION_SCHEMA, &default_db);
if (rc)
return rc; /* Error */
if (strcmp("test", default_db) != NULL)
{
printf("Wrong default database\n");
return 1;
}
printf("Default database: %s", default_db);
return 0;
}
See alsomysql_real_connect(3) 0
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