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first commit for openGauss connect odbc code

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lishifu
2020-06-24 16:11:37 +08:00
parent 2a3a17f54e
commit 59eb2808c4
458 changed files with 141117 additions and 75 deletions
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169
odbc-test-gauss/odbc_SQLStatistics.c Normal file
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/*
test: ���Խӿ�SQLStatistics���ýӿ�is a deprecated function and is replaced by SQLAllocHandle()
*/
#include <stdio.h>
#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>
#include <time.h>
SQLHENV V_OD_Env; // Handle ODBC environment
SQLHENV V_OD_hstmt;
SQLRETURN rc;
long V_OD_erg; // result of functions
SQLHDBC V_OD_hdbc; // Handle connection
SQLHSTMT hstmt = SQL_NULL_HSTMT,hStmt;
char V_OD_stat[10]; // Status SQL
SQLINTEGER V_OD_err,V_OD_rowanz,V_OD_id,V_ID;
SQLSMALLINT V_OD_mlen,V_OD_colanz;
char V_OD_msg[200],V_OD_buffer[200],remark[200],V_OD_buffer1[200];
SQLLEN non_unique_ind,type_ind,index_name_ind,column_name_ind,card_ind,pages_ind;
SQLINTEGER maxlv,minlv,non_unique,type,index_name,column_name,cardinality,pages;
SQLINTEGER m_min,m_max;
SQLCHAR schema[200] = "FVT_INTERFACE";
SQLCHAR table[200] = "odbc_SQLStatistics";
char *buf = "Mike";
int value = 3;
int main(int argc,char *argv[])
{
/**
ODBC handle
1) SQL_HANDLE_ENV
2) SQL_HANDLE_DBC
3) SQL_HANDLE_STMT
*/
// 1. test SQLAllocEnv
V_OD_erg = SQLAllocEnv(&V_OD_Env);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error AllocHandle\n");
return -1;
}
V_OD_erg = SQLSetEnvAttr(V_OD_Env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SetEnv\n");
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
// 2. allocate connection handle, set timeout
V_OD_erg = SQLAllocConnect (V_OD_Env, &V_OD_hdbc);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error AllocHDB %d\n",V_OD_erg);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
// 3. Connect to the datasource "gaussdb"
V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "gaussdb", SQL_NTS,
(SQLCHAR*) "", SQL_NTS,
(SQLCHAR*) "", SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLConnect %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_DBC, V_OD_hdbc,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
printf("Connected Successfuly!\n");
/* ... */
V_OD_erg = SQLAllocHandle(SQL_HANDLE_STMT, V_OD_hdbc, &hstmt);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error allcoc hstmt %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_STMT, hstmt,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
V_OD_erg = SQLExecDirect(hstmt,"drop table IF EXISTS FVT_INTERFACE.odbc_SQLStatistics",SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLExecDirect %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_DBC, V_OD_hdbc,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
V_OD_erg = SQLExecDirect(hstmt,"create table FVT_INTERFACE.odbc_SQLStatistics(id int,name varchar(20),age float,addr char)",SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLExecDirect %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_DBC, V_OD_hdbc,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
V_OD_erg = SQLExecDirect(hstmt,"create UNIQUE index odbc_SQLStatistics_index on FVT_INTERFACE.odbc_SQLStatistics(id)",SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLExecDirect %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_DBC, V_OD_hdbc,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
/* ... */
V_OD_erg = SQLStatistics(hstmt, NULL, 0, schema, SQL_NTS,
table, SQL_NTS, SQL_INDEX_ALL , SQL_QUICK);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLStatistics %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_ENV, V_OD_Env,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return -1;
}
V_OD_erg = SQLBindCol(hstmt, 4, SQL_C_SHORT,
&non_unique, 2, &non_unique_ind);
V_OD_erg = SQLBindCol(hstmt, 6, SQL_C_CHAR,
&index_name, 129, &index_name_ind);
V_OD_erg = SQLBindCol(hstmt, 7, SQL_C_SHORT,
&type, 2, &type_ind);
V_OD_erg = SQLBindCol(hstmt, 9, SQL_C_CHAR,
&column_name, 129, &column_name_ind);
V_OD_erg = SQLBindCol(hstmt, 11, SQL_C_LONG,
&cardinality, 4, &card_ind);
V_OD_erg = SQLBindCol(hstmt, 12, SQL_C_LONG,
&pages, 4, &pages_ind);
printf("Statistics for table\n");
while ((V_OD_erg = SQLFetch(hstmt)) == SQL_SUCCESS)
{ if (type != SQL_TABLE_STAT)
{ printf(" Column: %-18s Index Name: %-18s\n",
column_name, index_name);
}
else
{ printf(" Table Statistics:\n");
}
if (card_ind != SQL_NULL_DATA)
printf(" Cardinality = ",cardinality);
else
printf(" Cardinality = (Unavailable)");
if (pages_ind != SQL_NULL_DATA)
printf(" Pages = ",pages);
else
printf(" Pages = (Unavailable)\n");
}
SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
SQLDisconnect(V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return(0);
}