C/C++语言——libpq

创建表

#include <stdio.h>
#include <stdlib.h>
#include <libpq-fe.h>

static void
exit_nicely(PGconn *conn)
{
    PQfinish(conn);
    exit(1);
}

int
main(int argc, char **argv)
{
    const char *conninfo;
    PGconn     *conn;
    PGresult   *res;
    int         nFields;
    int         i,j;

    if (argc > 1)
        conninfo = argv[1];
    else
        conninfo = "dbname=postgres port=42121 host='10.44.133.171' application_name=test connect_timeout=5 sslmode=allow user='test' password='test_1234'";

    conn = PQconnectdb(conninfo);

    if (PQstatus(conn) != CONNECTION_OK)
    {
        fprintf(stderr, "Connection to database failed: %s",
                PQerrorMessage(conn));
        exit_nicely(conn);
    }

    res = PQexec(conn, "CREATE TABLE customer_t1(c_customer_sk INTEGER, c_customer_name VARCHAR(32))");
    if (PQresultStatus(res) != PGRES_COMMAND_OK)
    {
        fprintf(stderr, "CREATE command failed: %s", PQerrorMessage(conn));
        PQclear(res);
        exit_nicely(conn);
    }

    /* 关闭数据库连接并清理 */
    PQfinish(conn);

    return 0;
}

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