From 4aaa0b0989043c95937c7efe96aa1d198f7bec78 Mon Sep 17 00:00:00 2001
From: rjhallsted <rjhallsted@gmail.com>
Date: Mon, 16 Sep 2024 14:43:39 -0700
Subject: [PATCH] Make LIKE expressions case-insensitive

---
 Cargo.lock        |  1 +
 core/vdbe/mod.rs  |  2 +-
 testing/like.test | 13 +++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 07e8a94c1..b1964d8fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1078,6 +1078,7 @@ version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afc22eff61b133b115c6e8c74e818c628d6d5e7a502afea6f64dee076dd94326"
 dependencies = [
+ "cc",
  "pkg-config",
  "vcpkg",
 ]
diff --git a/core/vdbe/mod.rs b/core/vdbe/mod.rs
index 09914d5e2..4bf369d6b 100644
--- a/core/vdbe/mod.rs
+++ b/core/vdbe/mod.rs
@@ -1968,7 +1968,7 @@ fn exec_char(values: Vec<OwnedValue>) -> OwnedValue {
 }
 
 fn construct_like_regex(pattern: &str) -> Regex {
-    let mut regex_pattern = String::from("^");
+    let mut regex_pattern = String::from("(?i)^");
     regex_pattern.push_str(&pattern.replace('%', ".*").replace('_', "."));
     regex_pattern.push('$');
     Regex::new(&regex_pattern).unwrap()
diff --git a/testing/like.test b/testing/like.test
index d53342e50..edd6ba5e5 100755
--- a/testing/like.test
+++ b/testing/like.test
@@ -22,6 +22,19 @@ do_execsql_test where-like {
 } {4|sweater|25.0
 5|sweatshirt|74.0}
 
+do_execsql_test where-like-case-insensitive {
+    select * from products where name like 'SWEAT%';
+} {4|sweater|25.0
+5|sweatshirt|74.0}
+
+do_execsql_test where-like-underscore {
+    select * from products where name like 'sweat_r';
+} {4|sweater|25.0}
+
+do_execsql_test where-like-underscore-case-insensitive {
+    select * from products where name like 'SwEaT_R';
+} {4|sweater|25.0}
+
 do_execsql_test where-like-fn {
     select * from products where like('sweat%', name)=1
 } {4|sweater|25.0