tests: add unit test of cast string to decimal.

databendlabs · Mar 6, 2023 · ac2d1df · ac2d1df
1 parent d841960
commit ac2d1df
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diff --git a/src/query/functions/tests/it/scalars/cast.rs b/src/query/functions/tests/it/scalars/cast.rs
@@ -32,6 +32,7 @@ fn test_cast() {
         test_cast_number_to_date(file, is_try);
         test_cast_between_number_and_string(file, is_try);
         test_cast_between_boolean_and_string(file, is_try);
+        test_cast_between_string_and_decimal(file, is_try);
         test_cast_between_number_and_boolean(file, is_try);
         test_cast_between_date_and_timestamp(file, is_try);
         test_cast_between_string_and_timestamp(file, is_try);
@@ -622,3 +623,36 @@ fn test_cast_to_nested_type(file: &mut impl Write, is_try: bool) {
         &[],
     );
 }
+
+fn test_cast_between_string_and_decimal(file: &mut impl Write, is_try: bool) {
+    let prefix = if is_try { "TRY_" } else { "" };
+
+    run_ast(file, format!("{prefix}CAST('010.010' AS DECIMAL(5,3))"), &[
+    ]);
+    run_ast(file, format!("{prefix}CAST('010.010' AS DECIMAL(5,4))"), &[
+    ]);
+    run_ast(file, format!("{prefix}CAST('010.010' AS DECIMAL(5,2))"), &[
+    ]);
+    run_ast(file, format!("{prefix}CAST('010.010' AS DECIMAL(4,3))"), &[
+    ]);
+    run_ast(file, format!("{prefix}CAST('010.010' AS DECIMAL(4,2))"), &[
+    ]);
+    run_ast(
+        file,
+        format!("{prefix}CAST('-1010.010' AS DECIMAL(7,3))"),
+        &[],
+    );
+    run_ast(file, format!("{prefix}CAST('00' AS DECIMAL(2,1))"), &[]);
+    run_ast(file, format!("{prefix}CAST('0.0' AS DECIMAL(2,0))"), &[]);
+    run_ast(file, format!("{prefix}CAST('.0' AS DECIMAL(1,0))"), &[]);
+    run_ast(
+        file,
+        format!("{prefix}CAST('+1.0e-10' AS DECIMAL(11, 10))"),
+        &[],
+    );
+    run_ast(
+        file,
+        format!("{prefix}CAST('-1.0e+10' AS DECIMAL(11, 0))"),
+        &[],
+    );
+}
diff --git a/src/query/functions/tests/it/scalars/testdata/cast.txt b/src/query/functions/tests/it/scalars/testdata/cast.txt
@@ -960,6 +960,103 @@ evaluation (internal):
 +--------+-----------------------------------------------------------------+
 
 
+ast            : CAST('010.010' AS DECIMAL(5,3))
+raw expr       : CAST("010.010" AS Decimal(5, 3))
+checked expr   : to_decimal<String>("010.010")
+optimized expr : 10.010_d128(5,3)
+output type    : Decimal(5, 3)
+output domain  : {10.010..=10.010}
+output         : 10.010
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | CAST('010.010' AS DECIMAL(5,4))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ fail to decode string as decimal: Code: 1049, displayText = decimal overflow. while evaluating function `to_decimal("010.010")`
+
+
+
+ast            : CAST('010.010' AS DECIMAL(5,2))
+raw expr       : CAST("010.010" AS Decimal(5, 2))
+checked expr   : to_decimal<String>("010.010")
+optimized expr : 10.01_d128(5,2)
+output type    : Decimal(5, 2)
+output domain  : {10.01..=10.01}
+output         : 10.01
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | CAST('010.010' AS DECIMAL(4,3))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ fail to decode string as decimal: Code: 1049, displayText = decimal overflow. while evaluating function `to_decimal("010.010")`
+
+
+
+ast            : CAST('010.010' AS DECIMAL(4,2))
+raw expr       : CAST("010.010" AS Decimal(4, 2))
+checked expr   : to_decimal<String>("010.010")
+optimized expr : 10.01_d128(4,2)
+output type    : Decimal(4, 2)
+output domain  : {10.01..=10.01}
+output         : 10.01
+
+
+ast            : CAST('-1010.010' AS DECIMAL(7,3))
+raw expr       : CAST("-1010.010" AS Decimal(7, 3))
+checked expr   : to_decimal<String>("-1010.010")
+optimized expr : -1010.010_d128(7,3)
+output type    : Decimal(7, 3)
+output domain  : {-1010.010..=-1010.010}
+output         : -1010.010
+
+
+ast            : CAST('00' AS DECIMAL(2,1))
+raw expr       : CAST("00" AS Decimal(2, 1))
+checked expr   : to_decimal<String>("00")
+optimized expr : 0.0_d128(2,1)
+output type    : Decimal(2, 1)
+output domain  : {0.0..=0.0}
+output         : 0.0
+
+
+ast            : CAST('0.0' AS DECIMAL(2,0))
+raw expr       : CAST("0.0" AS Decimal(2, 0))
+checked expr   : to_decimal<String>("0.0")
+optimized expr : 0_d128(2,0)
+output type    : Decimal(2, 0)
+output domain  : {0..=0}
+output         : 0
+
+
+ast            : CAST('.0' AS DECIMAL(1,0))
+raw expr       : CAST(".0" AS Decimal(1, 0))
+checked expr   : to_decimal<String>(".0")
+optimized expr : 0_d128(1,0)
+output type    : Decimal(1, 0)
+output domain  : {0..=0}
+output         : 0
+
+
+ast            : CAST('+1.0e-10' AS DECIMAL(11, 10))
+raw expr       : CAST("+1.0e-10" AS Decimal(11, 10))
+checked expr   : to_decimal<String>("+1.0e-10")
+optimized expr : 0.0000000001_d128(11,10)
+output type    : Decimal(11, 10)
+output domain  : {0.0000000001..=0.0000000001}
+output         : 0.0000000001
+
+
+ast            : CAST('-1.0e+10' AS DECIMAL(11, 0))
+raw expr       : CAST("-1.0e+10" AS Decimal(11, 0))
+checked expr   : to_decimal<String>("-1.0e+10")
+optimized expr : -10000000000_d128(11,0)
+output type    : Decimal(11, 0)
+output domain  : {-10000000000..=-10000000000}
+output         : -10000000000
+
+
 ast            : CAST(0 AS BOOLEAN)
 raw expr       : CAST(0_u8 AS Boolean)
 checked expr   : to_boolean<UInt8>(0_u8)
@@ -2806,6 +2903,94 @@ evaluation (internal):
 +--------+--------------------------------------------------------------------------------------------------------------------+
 
 
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('010.010' AS DECIMAL(5,3))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(5, 3) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('010.010' AS DECIMAL(5,4))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(5, 4) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('010.010' AS DECIMAL(5,2))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(5, 2) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('010.010' AS DECIMAL(4,3))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(4, 3) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('010.010' AS DECIMAL(4,2))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(4, 2) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('-1010.010' AS DECIMAL(7,3))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(7, 3) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('00' AS DECIMAL(2,1))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(2, 1) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('0.0' AS DECIMAL(2,0))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(2, 0) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('.0' AS DECIMAL(1,0))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(1, 0) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('+1.0e-10' AS DECIMAL(11, 10))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(11, 10) NULL`
+
+
+
+error: 
+  --> SQL:1:1
+  |
+1 | TRY_CAST('-1.0e+10' AS DECIMAL(11, 0))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unable to cast type `String` to type `Decimal(11, 0) NULL`
+
+
+
 ast            : TRY_CAST(0 AS BOOLEAN)
 raw expr       : TRY_CAST(0_u8 AS Boolean)
 checked expr   : try_to_boolean<UInt8>(0_u8)