Function check_prepared_statement

sql/sql_prepare.cc:2315–2604

*/

static bool check_prepared_statement(Prepared_statement *stmt)
{
  THD *thd= stmt->thd;
  LEX *lex= stmt->lex;
  SELECT_LEX *select_lex= lex->first_select_lex();
  TABLE_LIST *tables;
  enum enum_sql_command sql_command= lex->sql_command;
  int res= 0;
  DBUG_ENTER("check_prepared_statement");
  DBUG_PRINT("enter",("command: %d  param_count: %u",
                      sql_command, stmt->param_count));

  lex->first_lists_tables_same();
  lex->fix_first_select_number();
  tables= lex->query_tables;

  /* set context for commands which do not use setup_tables */
  lex->first_select_lex()->context.resolve_in_table_list_only(select_lex->
                                                     get_table_list());

  /*
    For the optimizer trace, this is the symmetric, for statement preparation,
    of what is done at statement execution (in mysql_execute_command()).
  */
  Opt_trace_start ots(thd);
  ots.init(thd, tables, lex->sql_command, &lex->var_list, thd->query(),
           thd->query_length(), thd->variables.character_set_client);

  Json_writer_object trace_command(thd);
  Json_writer_array trace_command_steps(thd, "steps");

  /* Reset warning count for each query that uses tables */
  if (tables)
    thd->get_stmt_da()->opt_clear_warning_info(thd->query_id);

  if (sql_command_flags[sql_command] & CF_HA_CLOSE)
    mysql_ha_rm_tables(thd, tables);

  /*
    Open temporary tables that are known now. Temporary tables added by
    prelocking will be opened afterwards (during open_tables()).
  */
  if (sql_command_flags[sql_command] & CF_PREOPEN_TMP_TABLES)
  {
    if (thd->open_temporary_tables(tables))
      goto error;
  }

#ifdef WITH_WSREP
  if (wsrep_sync_wait(thd, sql_command))
    goto error;
#endif
  switch (sql_command) {
  case SQLCOM_REPLACE:
  case SQLCOM_INSERT:
    res= mysql_test_insert(stmt, tables, lex->field_list,
                           lex->many_values,
                           lex->update_list, lex->value_list,