Name
mysql_select_db - selects a database as default
Synopsis
#include <mysql.h> int mysql_select_db(MYSQL * mysql, const char * db);
Description
Selects a database as default. Returns zero on success, non-zero on failure
Parameters
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mysql is a connection identifier, which was previously allocated by mysql_init(3) and connected by mysql_real_connect(3). |
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db - the default database name |
Notes
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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. |
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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 also
mysql_real_connect(3)