sql: add 'compact' auto_trace option

This allows a user of auto_trace to specify

   \set auto_trace=on,compact

if they want the per-statement trace output to use the compact format
supported by SHOW TRACE FOR SESSION.

Epic: none

Release Note (cli change): The SQL shell now supports the compact
output mode when auto_trace is enabled.

Author: stevendanna

pkg/cli/clisqlshell/sql.go

@@ -2169,17 +2169,21 @@ func (c *cliState) doRunStatements(nextState cliStateEnum) cliStateEnum {
 			// shell.
 		} else {
 			traceType := ""
+			compact := ""
 			if strings.Contains(c.iCtx.autoTrace, "kv") {
 				traceType = "kv"
 			}
+			if strings.Contains(c.iCtx.autoTrace, "compact") {
+				compact = "COMPACT"
+			}
 			if err := c.runWithInterruptableCtx(func(ctx context.Context) error {
 				defer c.maybeFlushOutput()
 				return c.sqlExecCtx.RunQueryAndFormatResults(ctx,
 					c.conn,
 					c.iCtx.queryOutput, // query output
 					c.iCtx.stdout,      // timings
 					c.iCtx.stderr,      // errors
-					clisqlclient.MakeQuery(fmt.Sprintf("SHOW %s TRACE FOR SESSION", traceType)))
+					clisqlclient.MakeQuery(fmt.Sprintf("SHOW %s %s TRACE FOR SESSION", compact, traceType)))
 			}); err != nil {
 				clierror.OutputError(c.iCtx.stderr, err, true /*showSeverity*/, false /*verbose*/)
 				if c.exitErr == nil {

pkg/sql/conn_executor_exec.go

@@ -4101,6 +4101,8 @@ func (ex *connExecutor) enableTracing(modes []string) error {
 			traceKV = true
 		case "cluster":
 			recordingType = tracingpb.RecordingVerbose
+		case "compact":
+			// compact modifies the output format.
 		default:
 			return pgerror.Newf(pgcode.Syntax,
 				"set tracing: unknown mode %q", s)