odbcBackend: Add functions for del, insert, update

- create queries, bind parameters to statements, execute queries - support for metadata in INSERT and UPDATE not finished yet
flo91 · Jun 16, 2023 · ececcf6 · ececcf6
1 parent 907abac
commit ececcf6
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Showing 2 changed files with 346 additions and 245 deletions.
diff --git a/src/plugins/backend_odbc/backend_odbc_general.c b/src/plugins/backend_odbc/backend_odbc_general.c
@@ -418,6 +418,11 @@ bool bindColumns (SQLHSTMT sqlStmt, struct columnData * buffers, Key * errorKey)
 
 SQLLEN executeQuery (SQLHSTMT stmt, const char * query, Key * errorKey)
 {
+	if (!stmt)
+	{
+		ELEKTRA_SET_INTERFACE_ERROR (errorKey, "The provided statement handle must not be null.");
+	}
+
 	SQLRETURN ret = SQLExecDirect (stmt, (SQLCHAR *) query, SQL_NTS);
 
 	if (SQL_SUCCEEDED (ret) || ret == SQL_NO_DATA)