[FEAT MERGE] information_schema enhence

2023-01-13 03:42:07 +00:00
parent 9ce9e1a357
commit ec56715ea5
98 changed files with 4513 additions and 3156 deletions
--- a/src/sql/engine/expr/ob_expr_sql_mode_convert.cpp
+++ b/src/sql/engine/expr/ob_expr_sql_mode_convert.cpp
@ -0,0 +1,83 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#define USING_LOG_PREFIX SQL_ENG
+
+#include "sql/engine/expr/ob_expr_sql_mode_convert.h"
+#include "common/sql_mode/ob_sql_mode_utils.h"
+
+using namespace oceanbase::common;
+
+namespace oceanbase
+{
+namespace sql
+{
+
+ObExprSqlModeConvert::ObExprSqlModeConvert(ObIAllocator &alloc)
+  : ObStringExprOperator(alloc, T_FUN_SYS_SQL_MODE_CONVERT, N_SQL_MODE_CONVERT, 1)
+{
+}
+
+ObExprSqlModeConvert::~ObExprSqlModeConvert()
+{
+}
+
+int ObExprSqlModeConvert::calc_result_type1(ObExprResType &type,
+                                            ObExprResType &type1,
+                                            common::ObExprTypeCtx &type_ctx) const
+{
+  UNUSED(type_ctx);
+  UNUSED(type1);
+
+  int ret = OB_SUCCESS;
+  type.set_varchar();
+  type.set_default_collation_type();
+  type.set_collation_level(CS_LEVEL_SYSCONST);
+  type.set_length(static_cast<common::ObLength>(OB_MAX_SYS_VAR_VAL_LENGTH));
+  return ret;
+}
+
+int ObExprSqlModeConvert::sql_mode_convert(const ObExpr &expr,
+                                           ObEvalCtx &ctx,
+                                           ObDatum &expr_datum)
+{
+  int ret = OB_SUCCESS;
+  ObDatum *arg = NULL;
+  if (OB_FAIL(expr.args_[0]->eval(ctx, arg))) {
+    LOG_WARN("eval arg failed", K(ret));
+  } else if (arg->is_null()) {
+    expr_datum.set_null();
+  } else {
+    ObObj int_value;
+    ObObj str_value;
+    int_value.set_uint64(arg->get_uint64());
+    if (OB_FAIL(common::ob_sql_mode_to_str(int_value, str_value, &ctx.get_expr_res_alloc()))) {
+      LOG_WARN("convert sql mode failed", K(ret));
+    } else {
+      expr_datum.set_string(str_value.get_string());
+    }
+  }
+  return ret;
+}
+
+int ObExprSqlModeConvert::cg_expr(ObExprCGCtx &op_cg_ctx,
+                                  const ObRawExpr &raw_expr,
+                                  ObExpr &rt_expr) const
+{
+  UNUSED(raw_expr);
+  UNUSED(op_cg_ctx);
+  rt_expr.eval_func_ = ObExprSqlModeConvert::sql_mode_convert;
+  return OB_SUCCESS;
+}
+
+}
+}