Add sqlite3 syntax completion

Author: CHIKAMATSU Naohiro

shell/shell.go

@@ -174,8 +174,18 @@ func (s *Shell) completer(d prompt.Document) []prompt.Suggest {
 		{Text: "SET", Description: "SQL: specify values to be updated"},
 		{Text: "DELETE FROM", Description: "SQL: specify tables to be deleted"},
 		{Text: "IN", Description: "SQL: condition grouping"},
+		{Text: "LIKE", Description: "SQL: use wildcards to perform pattern matching"},
+		{Text: "GLOB", Description: "SQL: match only text values against a pattern using wildcard"},
+		{Text: "BETWEEN", Description: "SQL: selects values within a given range"},
+		{Text: "IS NULL", Description: "SQL: selects null values"},
+		{Text: "DISTINCT", Description: "SQL: exclude duplicate values"},
 		{Text: "INNER JOIN", Description: "SQL: inner join tables"},
+		{Text: "OUTER JOIN", Description: "SQL: outer join tables"},
+		{Text: "CROSS JOIN", Description: "SQL: cross join tables"},
+		{Text: "NATURAL", Description: "SQL: natural join tables"},
 		{Text: "LIMIT", Description: "SQL: upper Limit of records"},
+		{Text: "OFFSET", Description: "SQL: identify the starting point to return result rows"},
+		{Text: "CASE", Description: "SQL: branching by conditions"},
 		{Text: "table", Description: "sqly command argument: table output format"},
 		{Text: "markdown", Description: "sqly command argument: markdown table output format"},
 		{Text: "csv", Description: "sqly command argument: csv output format"},