-
Notifications
You must be signed in to change notification settings - Fork 328
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
4 changed files
with
244 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| // Copyright 2023 Greptime Team | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| use std::borrow::Cow; | ||
| use std::fmt::Display; | ||
|
|
||
| use common_query::error::InvalidFuncArgsSnafu; | ||
| use common_query::prelude::Signature; | ||
| use datatypes::prelude::ConcreteDataType; | ||
| use datatypes::scalars::ScalarVectorBuilder; | ||
| use datatypes::vectors::{BinaryVectorBuilder, MutableVector, VectorRef}; | ||
| use nalgebra::DVectorView; | ||
| use snafu::ensure; | ||
|
|
||
| use crate::function::{Function, FunctionContext}; | ||
| use crate::helper; | ||
| use crate::scalars::vector::impl_conv::{as_veclit, as_veclit_if_const, veclit_to_binlit}; | ||
|
|
||
| const NAME: &str = "vec_sub"; | ||
|
|
||
| /// Subtracts corresponding elements of two vectors, returns a vector. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```sql | ||
| /// SELECT vec_to_string(vec_sub("[1.0, 1.0]", "[1.0, 2.0]")) as result; | ||
| /// | ||
| /// +---------------------------------------------------------------+ | ||
| /// | vec_to_string(vec_sub(Utf8("[1.0, 1.0]"),Utf8("[1.0, 2.0]"))) | | ||
| /// +---------------------------------------------------------------+ | ||
| /// | [0,-1] | | ||
| /// +---------------------------------------------------------------+ | ||
| /// | ||
| /// -- Negative scalar to simulate subtraction | ||
| /// SELECT vec_to_string(vec_sub('[-1.0, -1.0]', '[1.0, 2.0]')); | ||
| /// | ||
| /// +-----------------------------------------------------------------+ | ||
| /// | vec_to_string(vec_sub(Utf8("[-1.0, -1.0]"),Utf8("[1.0, 2.0]"))) | | ||
| /// +-----------------------------------------------------------------+ | ||
| /// | [-2,-3] | | ||
| /// +-----------------------------------------------------------------+ | ||
| /// | ||
| #[derive(Debug, Clone, Default)] | ||
| pub struct SubFunction; | ||
|
|
||
| impl Function for SubFunction { | ||
| fn name(&self) -> &str { | ||
| NAME | ||
| } | ||
|
|
||
| fn return_type( | ||
| &self, | ||
| _input_types: &[ConcreteDataType], | ||
| ) -> common_query::error::Result<ConcreteDataType> { | ||
| Ok(ConcreteDataType::binary_datatype()) | ||
| } | ||
|
|
||
| fn signature(&self) -> Signature { | ||
| helper::one_of_sigs2( | ||
| vec![ | ||
| ConcreteDataType::string_datatype(), | ||
| ConcreteDataType::binary_datatype(), | ||
| ], | ||
| vec![ | ||
| ConcreteDataType::string_datatype(), | ||
| ConcreteDataType::binary_datatype(), | ||
| ], | ||
| ) | ||
| } | ||
|
|
||
| fn eval( | ||
| &self, | ||
| _func_ctx: FunctionContext, | ||
| columns: &[VectorRef], | ||
| ) -> common_query::error::Result<VectorRef> { | ||
| ensure!( | ||
| columns.len() == 2, | ||
| InvalidFuncArgsSnafu { | ||
| err_msg: format!( | ||
| "The length of the args is not correct, expect exactly two, have: {}", | ||
| columns.len() | ||
| ) | ||
| } | ||
| ); | ||
| let arg0 = &columns[0]; | ||
| let arg1 = &columns[1]; | ||
|
|
||
| let len = arg0.len(); | ||
| let mut result = BinaryVectorBuilder::with_capacity(len); | ||
| if len == 0 { | ||
| return Ok(result.to_vector()); | ||
| } | ||
|
|
||
| let arg0_const = as_veclit_if_const(arg0)?; | ||
| let arg1_const = as_veclit_if_const(arg1)?; | ||
|
|
||
| for i in 0..len { | ||
| let arg0 = match arg0_const.as_ref() { | ||
| Some(arg0) => Some(Cow::Borrowed(arg0.as_ref())), | ||
| None => as_veclit(arg0.get_ref(i))?, | ||
| }; | ||
| let arg1 = match arg1_const.as_ref() { | ||
| Some(arg1) => Some(Cow::Borrowed(arg1.as_ref())), | ||
| None => as_veclit(arg1.get_ref(i))?, | ||
| }; | ||
| let (Some(arg0), Some(arg1)) = (arg0, arg1) else { | ||
| result.push_null(); | ||
| continue; | ||
| }; | ||
| let vec0 = DVectorView::from_slice(&arg0, arg0.len()); | ||
| let vec1 = DVectorView::from_slice(&arg1, arg1.len()); | ||
|
|
||
| let vec_res = vec0 - vec1; | ||
| let veclit = vec_res.as_slice(); | ||
| let binlit = veclit_to_binlit(veclit); | ||
| result.push(Some(&binlit)); | ||
| } | ||
|
|
||
| Ok(result.to_vector()) | ||
| } | ||
| } | ||
|
|
||
| impl Display for SubFunction { | ||
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | ||
| write!(f, "{}", NAME.to_ascii_uppercase()) | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use std::sync::Arc; | ||
|
|
||
| use datatypes::vectors::StringVector; | ||
|
|
||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_sub() { | ||
| let func = SubFunction; | ||
|
|
||
| let input0 = Arc::new(StringVector::from(vec![ | ||
| Some("[1.0,2.0,3.0]".to_string()), | ||
| Some("[4.0,5.0,6.0]".to_string()), | ||
| None, | ||
| Some("[2.0,3.0,3.0]".to_string()), | ||
| ])); | ||
| let input1 = Arc::new(StringVector::from(vec![ | ||
| Some("[1.0,1.0,1.0]".to_string()), | ||
| Some("[6.0,5.0,4.0]".to_string()), | ||
| Some("[3.0,2.0,2.0]".to_string()), | ||
| None, | ||
| ])); | ||
|
|
||
| let result = func | ||
| .eval(FunctionContext::default(), &[input0, input1]) | ||
| .unwrap(); | ||
|
|
||
| let result = result.as_ref(); | ||
| assert_eq!(result.len(), 4); | ||
| assert_eq!( | ||
| result.get_ref(0).as_binary().unwrap(), | ||
| Some(veclit_to_binlit(&[0.0, 1.0, 2.0]).as_slice()) | ||
| ); | ||
| assert_eq!( | ||
| result.get_ref(1).as_binary().unwrap(), | ||
| Some(veclit_to_binlit(&[-2.0, 0.0, 2.0]).as_slice()) | ||
| ); | ||
| assert!(result.get_ref(2).is_null()); | ||
| assert!(result.get_ref(3).is_null()); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters