add math_funcs test case to script and add char_length error test case

tests/script/fullGeneralSuite.sim

@@ -38,6 +38,7 @@ run general/compute/stddev.sim
 run general/compute/sum.sim
 run general/compute/top.sim
 run general/compute/block_dist.sim
+run general/compute/math_funcs.sim
 run general/compute/scalar_pow.sim
 run general/compute/scalar_triangle.sim
 run general/compute/scalar_str_concat_len.sim

tests/script/general/compute/scalar_str_concat_len.sim

@@ -262,6 +262,27 @@ sql_error select concat_ws(c2) from $tb session(ts, 30s);
 sql_error select concat_ws(c2) from $stb slimit 2;
 
 sql_error select concat_ws(c2) from $stb interval(1m) slimit 2;
+
+sql_error select char_length(c2) from $stb group by tbname;
+
+sql_error select char_length(c2) from $stb group by tgcol;
+
+sql_error select char_length(c2) from $stb group by c3;
+
+sql_error select char_length(c2) from $stb interval(1m);
+
+sql_error select char_length(c2) from $stb state_window(c7);
+
+sql_error select char_length(c2) from $tb state_window(c7);
+
+sql_error select char_length(c2) from $stb session(ts, 30s);
+
+sql_error select char_length(c2) from $tb session(ts, 30s);
+
+sql_error select char_length(c2) from $stb slimit 2;
+
+sql_error select char_length(c2) from $stb interval(1m) slimit 2;
+
 print =============== trival test
 
 print execute sql select concat(c2,c3),concat(c2,c3,c4),concat(c2,c3,c4,c5) from ct1

tests/script/general/compute/testSuite.sim

@@ -20,6 +20,7 @@ run general/compute/stddev.sim
 run general/compute/sum.sim
 run general/compute/top.sim
 run general/compute/block_dist.sim
+run general/compute/math_funcs.sim
 run general/compute/scalar_pow.sim
 run general/compute/scalar_triangle.sim
 run general/compute/scalar_str_concat_len.sim

tests/script/regressionSuite.sim

@@ -38,6 +38,7 @@ run general/compute/stddev.sim
 run general/compute/sum.sim
 run general/compute/top.sim
 run general/compute/block_dist.sim
+run general/compute/math_funcs.sim
 run general/compute/scalar_pow.sim
 run general/compute/scalar_triangle.sim
 run general/compute/scalar_str_concat_len.sim