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new 2466d08d007 [fix](Nereids) fix cast string to date (#46065)
2466d08d007 is described below
commit 2466d08d00775cf1dc94e3e564c567d1efb91e16
Author: LiBinfeng <libinf...@selectdb.com>
AuthorDate: Mon Dec 30 16:35:44 2024 +0800
[fix](Nereids) fix cast string to date (#46065)
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #35637
Problem Summary:
When cast("201-01-01" as datetimev2(0)), The result is "2020-01-01" but
it is wrong. It should be result in "0201-01-01".
201 would be regarded as 20xy-0z as related pr show, it was a bug. But
actually it should not have this trasformation and result in
---
.../expression/rules/FoldConstantRuleOnFE.java | 2 +-
.../trees/expressions/literal/DateLiteral.java | 24 +++++++++++++---------
.../data/correctness_p0/test_cast_date_decimal.out | 3 +++
.../cast_function/test_cast_function.out | 2 +-
.../cast_function/test_cast_function.out | 2 +-
.../correctness_p0/test_cast_date_decimal.groovy | 4 ++++
6 files changed, 24 insertions(+), 13 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnFE.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnFE.java
index c439458ff4c..c2a73f7afec 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnFE.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnFE.java
@@ -481,7 +481,7 @@ public class FoldConstantRuleOnFE extends
AbstractExpressionRewriteRule
return ((DateLikeType)
dataType).fromString(((StringLikeLiteral) child).getStringValue());
} catch (AnalysisException t) {
if (cast.isExplicitType()) {
- return new NullLiteral(dataType);
+ return cast;
} else {
// If cast is from type coercion, we don't use NULL
literal and will throw exception.
throw t;
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateLiteral.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateLiteral.java
index 04300891c45..3bfc4a7dc81 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateLiteral.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/DateLiteral.java
@@ -189,19 +189,23 @@ public class DateLiteral extends Literal {
if (len == 4 || len == 2) {
sb.append(s, i, j);
} else if (len == 3) {
- if (partNumber == 0) {
- String yy = s.substring(i, i + 2);
- int year = Integer.parseInt(yy);
- if (year >= 0 && year <= 69) {
- sb.append("20");
- } else if (year >= 70 && year <= 99) {
- sb.append("19");
+ if (s.charAt(j) == '.') {
+ if (partNumber == 0) {
+ String yy = s.substring(i, i + 2);
+ int year = Integer.parseInt(yy);
+ if (year >= 0 && year <= 69) {
+ sb.append("20");
+ } else if (year >= 70 && year <= 99) {
+ sb.append("19");
+ }
+ sb.append(yy).append('-');
+ } else {
+ sb.append(s, i, i + 2).append(' ');
}
- sb.append(yy).append('-');
+ j = j - 1;
} else {
- sb.append(s, i, i + 2).append(' ');
+ sb.append("0").append(s, i, j);
}
- j = j - 1;
} else if (len == 1) {
if (partNumber == 0) {
sb.append("000").append(c);
diff --git a/regression-test/data/correctness_p0/test_cast_date_decimal.out
b/regression-test/data/correctness_p0/test_cast_date_decimal.out
index 1738d19a49d..1ec0f02f263 100644
--- a/regression-test/data/correctness_p0/test_cast_date_decimal.out
+++ b/regression-test/data/correctness_p0/test_cast_date_decimal.out
@@ -20,3 +20,6 @@ true
-- !sql7 --
\N \N \N \N
+-- !sql8 --
+2012-03-12T03:00 0123-01-01T00:00 2012-03-12T12:23:59
+
diff --git
a/regression-test/data/nereids_p0/sql_functions/cast_function/test_cast_function.out
b/regression-test/data/nereids_p0/sql_functions/cast_function/test_cast_function.out
index 6b34e73bd2e..c3b73874eaa 100644
---
a/regression-test/data/nereids_p0/sql_functions/cast_function/test_cast_function.out
+++
b/regression-test/data/nereids_p0/sql_functions/cast_function/test_cast_function.out
@@ -6,7 +6,7 @@
11
-- !sql --
-\N
+2000-01-01T03:14:17
-- !sql --
\N
diff --git
a/regression-test/data/query_p0/sql_functions/cast_function/test_cast_function.out
b/regression-test/data/query_p0/sql_functions/cast_function/test_cast_function.out
index 8b3214cfa75..31736a0624b 100644
---
a/regression-test/data/query_p0/sql_functions/cast_function/test_cast_function.out
+++
b/regression-test/data/query_p0/sql_functions/cast_function/test_cast_function.out
@@ -6,7 +6,7 @@
11
-- !sql --
-\N
+2000-01-01T03:14:17
-- !sql --
\N
diff --git
a/regression-test/suites/correctness_p0/test_cast_date_decimal.groovy
b/regression-test/suites/correctness_p0/test_cast_date_decimal.groovy
index f533b885a14..0593116df11 100644
--- a/regression-test/suites/correctness_p0/test_cast_date_decimal.groovy
+++ b/regression-test/suites/correctness_p0/test_cast_date_decimal.groovy
@@ -43,4 +43,8 @@ suite("test_cast_date_decimal") {
qt_sql7 """
select /*+SET_VAR(debug_skip_fold_constant=true)*/ cast('0000-02-29'
as date), cast('0000-02-29' as datetime), cast('00000229' as date),
cast('0000-02-29 12:12:12.123' as datetime);
"""
+
+ qt_sql8 """
+ select cast('123.123' as datetimev2), cast('123-01-01' as datetimev2),
cast('123.1212.235959' as datetimev2);
+ """
}
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