Code_column.cpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include <NdbApi.hpp>
- #include <common/StmtArea.hpp>
- #include <dictionary/DictSchema.hpp>
- #include <dictionary/DictColumn.hpp>
- #include "Code_column.hpp"
- #include "Code_table_list.hpp"
- #include "Code_table.hpp"
- // Plan_column
- Plan_column::~Plan_column()
- {
- }
- void
- Plan_column::analyzeColumn(Ctx& ctx, Plan_base::Ctl& ctl)
- {
- if (m_resTable != 0) // done on previous pass
- return;
- if (! (ctl.m_tableList.size() > 1)) {
- ctx.pushStatus(Sqlstate::_42000, Error::Gen, "column %s not allowed here", getPrintName());
- return;
- }
- unsigned resCount = 0;
- for (unsigned i = 1; i < ctl.m_tableList.size(); i++) {
- Plan_table* table = ctl.m_tableList[i];
- ctx_assert(table != 0);
- int ret = table->resolveColumn(ctx, this);
- if (ret < 0)
- return;
- if (ret)
- resCount++;
- }
- if (resCount == 0) {
- // XXX try to strip "schema name" from table name
- for (unsigned i = 1; i < ctl.m_tableList.size(); i++) {
- Plan_table* table = ctl.m_tableList[i];
- ctx_assert(table != 0);
- int ret = table->resolveColumn(ctx, this, true);
- if (ret < 0)
- return;
- if (ret)
- resCount++;
- }
- }
- if (resCount == 0) {
- ctx.pushStatus(Sqlstate::_42S22, Error::Gen, "column %s not found", getPrintName());
- return;
- }
- if (resCount > 1) {
- ctx.pushStatus(Error::Gen, "column %s is ambiguous", getPrintName());
- return;
- }
- // copy SQL type
- m_sqlType = dictColumn().sqlType();
- }