asereda-gs commented on a change in pull request #1095: [CALCITE-2599] add the
ASCII function
URL: https://github.com/apache/calcite/pull/1095#discussion_r264046635
##########
File path: core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java
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@@ -237,6 +238,12 @@ public static String initcap(String s) {
return newS.toString();
}
+ /** SQL ASCII(string) function. */
+ public static int ascii(String s) {
+ return s.length() == 0
+ ? 0 : s.substring(0, 1).getBytes(StandardCharsets.UTF_8)[0];
Review comment:
Yes it is more generic than `charAt()`.
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