patch 4.0
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@ -22,44 +22,17 @@ using namespace common;
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namespace sql {
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;
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ObExprSubQueryLessThan::ObExprSubQueryLessThan(ObIAllocator& alloc)
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: ObSubQueryRelationalExpr(alloc, T_OP_SQ_LT, N_SQ_LESS_THAN, 2, NOT_ROW_DIMENSION)
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{}
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ObExprSubQueryLessThan::ObExprSubQueryLessThan(ObIAllocator &alloc) :
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ObSubQueryRelationalExpr(alloc, T_OP_SQ_LT, N_SQ_LESS_THAN, 2, NOT_ROW_DIMENSION,
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INTERNAL_IN_MYSQL_MODE, INTERNAL_IN_ORACLE_MODE)
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{
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}
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ObExprSubQueryLessThan::~ObExprSubQueryLessThan()
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{}
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int ObExprSubQueryLessThan::compare_single_row(
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const ObNewRow& left_row, const ObNewRow& right_row, ObExprCtx& expr_ctx, ObObj& result) const
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{
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int ret = OB_SUCCESS;
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int32_t cmp = 0;
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if (OB_UNLIKELY(left_row.get_count() != right_row.get_count())) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("right and left row is not equal", K(ret));
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} else {
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const ObIArray<ObExprCalcType>& cmp_types = result_type_.get_row_calc_cmp_types();
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for (int64_t i = 0; OB_SUCC(ret) && i < left_row.get_count(); ++i) {
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const ObObj& left_param = left_row.get_cell(i);
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const ObObj& right_param = right_row.get_cell(i);
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if (OB_FAIL(ObSubQueryRelationalExpr::compare_obj(
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expr_ctx, left_param, right_param, cmp_types.at(i), false, result))) {
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LOG_WARN("compare subquery obj failed", K(ret));
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} else if (OB_UNLIKELY(result.is_null())) {
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break;
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} else if (OB_FAIL(result.get_int32(cmp))) {
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LOG_WARN("get int value from result failed", K(result), K(ret));
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} else if (0 != cmp) {
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result.set_int32(cmp < 0);
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break;
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} else if (i == left_row.get_count() - 1) {
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result.set_int32(false);
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break;
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}
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}
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}
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return ret;
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}
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} // namespace sql
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} // namespace oceanbase
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} // namespace sql
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} // namespace oceanbase
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