homework-jianmu/tests/army/query/function/ans/trim.csv

1	taos> select trim('foo')
2	trim('foo') |
3	==============
4	foo |
5	taos> select trim('foo' from 'foobarfoo')
6	trim('foo' from 'foobarfoo') |
7	===============================
8	bar |
9	taos> select trim(trailing 'foo' from 'foobarfoo')
10	trim(trailing 'foo' from 'foobarfoo') |
11	========================================
12	foobar |
13	taos> select trim(leading 'foo' from 'foobarfoo')
14	trim(leading 'foo' from 'foobarfoo') |
15	=======================================
16	barfoo |
17	taos> select trim(both 'foo' from 'foobarfoo')
18	trim(both 'foo' from 'foobarfoo') |
19	====================================
20	bar |
21	taos> select trim(' blank ')
22	trim(' blank ') |
23	========================
24	blank |
25	taos> select trim(both ' ' from ' bla nk ')
26	trim(both ' ' from ' bla nk ') |
27	========================================
28	bla nk |
29	taos> select trim(leading ' ' from ' bla nk')
30	trim(leading ' ' from ' bla nk') |
31	======================================
32	bla nk |
33	taos> select trim(trailing ' ' from ' bla nk ')
34	trim(trailing ' ' from ' bla nk ') |
35	============================================
36	bla nk |
37	taos> select trim(' ' from ' blank ')
38	trim(' ' from ' blank ') |
39	=================================
40	blank |
41	taos> select TRIM(BOTH 'å' FROM 'aæaå')
42	trim(both 'å' from 'aæaå') |
43	================================
44	aæa |
45	taos> select trim(' 中文测试 ')
46	trim(' 中文测试 ') |
47	===========================
48	中文测试 |
49	taos> select trim(both ' ' from ' 中文测试 ')
50	trim(both ' ' from ' 中文测试 ') |
51	=========================================
52	中文测试 |
53	taos> select trim(leading ' ' from ' 中文测试')
54	trim(leading ' ' from ' 中文测试') |
55	==========================================
56	中文测试 |
57	taos> select trim(trailing ' ' from ' 中文测试 ')
58	trim(trailing ' ' from ' 中文测试 ') |
59	=============================================
60	中文测试 |
61	taos> select trim(' ' from ' 中文测试 ')
62	trim(' ' from ' 中文测试 ') |
63	====================================
64	中文测试 |
65	taos> select trim('一' from '一二中文测试一')
66	trim('一' from '一二中文测试一') |
67	===========================================
68	二中文测试 |
69	taos> select trim(both '一' from '一二中文测试一')
70	trim(both '一' from '一二中文测试一') |
71	================================================
72	二中文测试 |
73	taos> select trim(leading '一' from '一二中文测试一')
74	trim(leading '一' from '一二中文测试一') |
75	===================================================
76	二中文测试一 |
77	taos> select trim(trailing '一' from '一二中文测试一')
78	trim(trailing '一' from '一二中文测试一') |
79	====================================================
80	一二中文测试 |
81	taos> select trim(' 中文andEnglish测试Test ')
82	trim(' 中文andEnglish测试Test ') |
83	===========================================
84	中文andEnglish测试Test |
85	taos> select trim(both ' ' from ' 中文andEnglish测试Test ')
86	trim(both ' ' from ' 中文andEnglish测试Test ') |
87	=========================================================
88	中文andEnglish测试Test |
89	taos> select trim(leading ' ' from ' 中文andEnglish测试Test')
90	trim(leading ' ' from ' 中文andEnglish测试Test') |
91	=========================================================
92	中文andEnglish测试Test |
93	taos> select trim(trailing ' ' from ' 中文andEnglish测试Test ')
94	trim(trailing ' ' from ' 中文andEnglish测试Test ') |
95	=============================================================
96	中文andEnglish测试Test |
97	taos> select trim('空格' from '空格中文andEngTes空格空格')
98	trim('空格' from '空格中文andEngTes空格空格') |
99	==========================================================
100	中文andEngTes |
101	taos> select trim(both '空格' from '空格中文andEngTes空格空格')
102	trim(both '空格' from '空格中文andEngTes空格空格') |
103	===============================================================
104	中文andEngTes |
105	taos> select trim(leading '空格' from '空格中文andEngTes空格空格')
106	trim(leading '空格' from '空格中文andEngTes空格空格') |
107	==================================================================
108	中文andEngTes空格空格 |
109	taos> select trim(trailing '空格' from '空格中文andEngTes空格空格')
110	trim(trailing '空格' from '空格中文andEngTes空格空格') |
111	===================================================================
112	空格中文andEngTes |
113	taos> select trim('blank' from 'blankblank中文andEnglish测试Tesblankblankblank')
114	trim('blank' from 'blankblank中文andEnglish测试Tesblankblank |
115	===================================================================
116	中文andEnglish测试Tes |
117	taos> select trim(both 'blank' from 'blankblank中文andEnglish测试Tesblankblankblank')
118	trim(both 'blank' from 'blankblank中文andEnglish测试Tesblank |
119	===================================================================
120	中文andEnglish测试Tes |
121	taos> select trim(leading 'blank' from 'blankblank中文andEnglish测试Tesblankblankblank')
122	trim(leading 'blank' from 'blankblank中文andEnglish测试Tesbl |
123	===================================================================
124	中文andEnglish测试Tesblankblankblank |
125	taos> select trim(trailing 'blank' from 'blankblank中文andEnglish测试Tesblankblankblank')
126	trim(trailing 'blank' from 'blankblank中文andEnglish测试Tesb |
127	===================================================================
128	blankblank中文andEnglish测试Tes |
129	taos> select trim('空格blank' from '空格blank空格中Tes空格blank空')
130	trim('空格blank' from '空格blank空格中Tes空格blank空') |
131	===================================================================
132	空格中Tes空格blank空 |
133	taos> select trim(both '空格blank' from '空格blank空格中Tes空格blank空')
134	trim(both '空格blank' from '空格blank空格中Tes空格blank |
135	===================================================================
136	空格中Tes空格blank空 |
137	taos> select trim(leading '空格blank' from '空格blank空格中Tes空格blank空')
138	trim(leading '空格blank' from '空格blank空格中Tes空格bl |
139	===================================================================
140	空格中Tes空格blank空 |
141	taos> select trim(trailing '空格blank' from '空格blank空格中Tes空格blank空')
142	trim(trailing '空格blank' from '空格blank空格中Tes空格b |
143	===================================================================
144	空格blank空格中Tes空格blank空 |
145	taos> select trim(both from nch1) from ts_4893.meters order by ts limit 5
146	trim(both from nch1) |
147	=================================
148	novel |
149	一二三四五六七八九十 |
150	update |
151	prision |
152	novel |
153	taos> select trim(leading from nch1) from ts_4893.meters order by ts limit 5
154	trim(leading from nch1) |
155	=================================
156	novel |
157	一二三四五六七八九十 |
158	update |
159	prision |
160	novel |
161	taos> select trim(trailing from nch1) from ts_4893.meters order by ts limit 5
162	trim(trailing from nch1) |
163	=================================
164	novel |
165	一二三四五六七八九十 |
166	update |
167	prision |
168	novel |
169	taos> select trim(nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
170	trim(nch2 from nch1) |
171	=================================
172	novel |
173	abc一二三abc一二三abc |
174	一二三abc |
175	一二三四五六七八九十 |
176	person |
177	taos> select trim(both nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
178	trim(both nch2 from nch1) |
179	=================================
180	novel |
181	abc一二三abc一二三abc |
182	一二三abc |
183	一二三四五六七八九十 |
184	person |
185	taos> select trim(leading nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
186	trim(leading nch2 from nch1) |
187	=================================
188	novel |
189	abc一二三abc一二三abc |
190	一二三abc |
191	一二三四五六七八九十 |
192	person |
193	taos> select trim(trailing nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
194	trim(trailing nch2 from nch1) |
195	=================================
196	novel |
197	abc一二三abc一二三abc |
198	一二三abc |
199	一二三四五六七八九十 |
200	person |
201	taos> select trim(nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
202	trim(nch2 from nch1) |
203	=================================
204	novel |
205	一二三四五六七八九十 |
206	update |
207	prision |
208	novel |
209	taos> select trim(both nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
210	trim(both nch2 from nch1) |
211	=================================
212	novel |
213	一二三四五六七八九十 |
214	update |
215	prision |
216	novel |
217	taos> select trim(leading nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
218	trim(leading nch2 from nch1) |
219	=================================
220	novel |
221	一二三四五六七八九十 |
222	update |
223	prision |
224	novel |
225	taos> select trim(trailing nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
226	trim(trailing nch2 from nch1) |
227	=================================
228	novel |
229	一二三四五六七八九十 |
230	update |
231	prision |
232	novel |
233	taos> select trim(var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
234	trim(var2 from nch1) |
235	=================================
236	novel |
237	novel |
238	abc |
239	123321三二一 |
240	abc一二三abc一二三ab |
241	taos> select trim(both var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
242	trim(both var2 from nch1) |
243	=================================
244	novel |
245	novel |
246	abc |
247	123321三二一 |
248	abc一二三abc一二三ab |
249	taos> select trim(leading var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
250	trim(leading var2 from nch1) |
251	=================================
252	novel |
253	novel |
254	abc |
255	123321三二一 |
256	abc一二三abc一二三abc |
257	taos> select trim(trailing var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
258	trim(trailing var2 from nch1) |
259	=================================
260	novel |
261	novel |
262	一二三abc |
263	一二三123321三二一 |
264	abc一二三abc一二三ab |
265	taos> select trim(var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
266	trim(var2 from nch1) |
267	=================================
268	一二三四五六七八九十 |
269	update |
270	prision |
271	novel |
272	novel |
273	taos> select trim(both var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
274	trim(both var2 from nch1) |
275	=================================
276	一二三四五六七八九十 |
277	update |
278	prision |
279	novel |
280	novel |
281	taos> select trim(leading var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
282	trim(leading var2 from nch1) |
283	=================================
284	一二三四五六七八九十 |
285	update |
286	prision |
287	novel |
288	novel |
289	taos> select trim(trailing var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
290	trim(trailing var2 from nch1) |
291	=================================
292	一二三四五六七八九十 |
293	update |
294	prision |
295	novel |
296	novel |
297	taos> select trim(nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
298	trim(nch2 from var1) |
299	=================================
300	一二三abc |
301	abc一二三abc一二三abc |
302	bc一二三abc一二三abc |
303	novel |
304	update |
305	taos> select trim(both nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
306	trim(both nch2 from var1) |
307	=================================
308	一二三abc |
309	abc一二三abc一二三abc |
310	bc一二三abc一二三abc |
311	novel |
312	update |
313	taos> select trim(leading nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
314	trim(leading nch2 from var1) |
315	=================================
316	一二三abc |
317	abc一二三abc一二三abc |
318	bc一二三abc一二三abc |
319	novel |
320	update |
321	taos> select trim(trailing nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
322	trim(trailing nch2 from var1) |
323	=================================
324	一二三abc |
325	abc一二三abc一二三abc |
326	abc一二三abc一二三abc |
327	novel |
328	update |
329	taos> select trim(nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
330	trim(nch2 from var1) |
331	=================================
332	novel |
333	person |
334	novel |
335	plate |
336	一二三四五六七八九十 |
337	taos> select trim(both nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
338	trim(both nch2 from var1) |
339	=================================
340	novel |
341	person |
342	novel |
343	plate |
344	一二三四五六七八九十 |
345	taos> select trim(leading nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
346	trim(leading nch2 from var1) |
347	=================================
348	novel |
349	person |
350	novel |
351	plate |
352	一二三四五六七八九十 |
353	taos> select trim(trailing nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
354	trim(trailing nch2 from var1) |
355	=================================
356	novel |
357	person |
358	novel |
359	plate |
360	一二三四五六七八九十 |
361	taos> select trim(var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
362	trim(var2 from var1) |
363	=================================
364	novel |
365	plat |
366	一二三abc |
367	123321三二一 |
368	abc一二三abc一二三ab |
369	taos> select trim(both var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
370	trim(both var2 from var1) |
371	=================================
372	novel |
373	plat |
374	一二三abc |
375	123321三二一 |
376	abc一二三abc一二三ab |
377	taos> select trim(leading var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
378	trim(leading var2 from var1) |
379	=================================
380	novel |
381	plate |
382	一二三abc |
383	123321三二一 |
384	abc一二三abc一二三abc |
385	taos> select trim(trailing var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
386	trim(trailing var2 from var1) |
387	=================================
388	novel |
389	plat |
390	一二三abc |
391	一二三123321三二一 |
392	abc一二三abc一二三ab |
393	taos> select trim(var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
394	trim(var2 from var1) |
395	=================================
396	person |
397	novel |
398	一二三四五六七八九十 |
399	update |
400	prision |
401	taos> select trim(both var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
402	trim(both var2 from var1) |
403	=================================
404	person |
405	novel |
406	一二三四五六七八九十 |
407	update |
408	prision |
409	taos> select trim(leading var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
410	trim(leading var2 from var1) |
411	=================================
412	person |
413	novel |
414	一二三四五六七八九十 |
415	update |
416	prision |
417	taos> select trim(trailing var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
418	trim(trailing var2 from var1) |
419	=================================
420	person |
421	novel |
422	一二三四五六七八九十 |
423	update |
424	prision |
425	taos> select trim('一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
426	trim('一' from nch1) |
427	=================================
428	二三四五六七八九十 |
429	二三四五六七八九十 |
430	abc一二三abc一二三abc |
431	|| |
432	二三123321三二 |
433	taos> select trim(both '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
434	trim(both '一' from nch1) |
435	=================================
436	二三四五六七八九十 |
437	二三四五六七八九十 |
438	abc一二三abc一二三abc |
439	|| |
440	二三123321三二 |
441	taos> select trim(leading '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
442	trim(leading '一' from nch1) |
443	=================================
444	二三四五六七八九十 |
445	二三四五六七八九十 |
446	abc一二三abc一二三abc |
447	||一一一一 |
448	二三123321三二一 |
449	taos> select trim(trailing '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
450	trim(trailing '一' from nch1) |
451	=================================
452	一二三四五六七八九十 |
453	一二三四五六七八九十 |
454	abc一二三abc一二三abc |
455	一一一一一|| |
456	一二三123321三二 |
457	taos> select trim('一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
458	trim('一' from nch1) |
459	=================================
460	novel |
461	update |
462	prision |
463	novel |
464	novel |
465	taos> select trim(both '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
466	trim(both '一' from nch1) |
467	=================================
468	novel |
469	update |
470	prision |
471	novel |
472	novel |
473	taos> select trim(leading '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
474	trim(leading '一' from nch1) |
475	=================================
476	novel |
477	update |
478	prision |
479	novel |
480	novel |
481	taos> select trim(trailing '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
482	trim(trailing '一' from nch1) |
483	=================================
484	novel |
485	update |
486	prision |
487	novel |
488	novel |
489	taos> select trim('一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
490	trim('一' from var1) |
491	=================================
492	二三四五六七八九十 |
493	二三abc |
494	abc一二三abc一二三abc |
495	二三123321三二 |
496	|| |
497	taos> select trim(both '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
498	trim(both '一' from var1) |
499	=================================
500	二三四五六七八九十 |
501	二三abc |
502	abc一二三abc一二三abc |
503	二三123321三二 |
504	|| |
505	taos> select trim(leading '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
506	trim(leading '一' from var1) |
507	=================================
508	二三四五六七八九十 |
509	二三abc |
510	abc一二三abc一二三abc |
511	二三123321三二一 |
512	||一一一一 |
513	taos> select trim(trailing '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
514	trim(trailing '一' from var1) |
515	=================================
516	一二三四五六七八九十 |
517	一二三abc |
518	abc一二三abc一二三abc |
519	一二三123321三二 |
520	一一一一一|| |
521	taos> select trim('一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
522	trim('一' from var1) |
523	=================================
524	novel |
525	person |
526	novel |
527	plate |
528	update |
529	taos> select trim(both '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
530	trim(both '一' from var1) |
531	=================================
532	novel |
533	person |
534	novel |
535	plate |
536	update |
537	taos> select trim(leading '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
538	trim(leading '一' from var1) |
539	=================================
540	novel |
541	person |
542	novel |
543	plate |
544	update |
545	taos> select trim(trailing '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
546	trim(trailing '一' from var1) |
547	=================================
548	novel |
549	person |
550	novel |
551	plate |
552	update |
553	taos> select trim(nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') != 0 order by ts limit 5
554	trim(nch2 from '三abbcfp三a') |
555	==================================
556	三abbcfp三a |
557	三abbcfp三a |
558	三abbcfp三a |
559	bbcfp |
560	三abbcfp三a |
561	taos> select trim(both nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') != 0 order by ts limit 5
562	trim(both nch2 from '三abbcfp三a') |
563	=======================================
564	三abbcfp三a |
565	三abbcfp三a |
566	三abbcfp三a |
567	bbcfp |
568	三abbcfp三a |
569	taos> select trim(leading nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') != 0 order by ts limit 5
570	trim(leading nch2 from '三abbcfp三a') |
571	==========================================
572	三abbcfp三a |
573	三abbcfp三a |
574	三abbcfp三a |
575	bbcfp三a |
576	三abbcfp三a |
577	taos> select trim(trailing nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') != 0 order by ts limit 5
578	trim(trailing nch2 from '三abbcfp三a') |
579	===========================================
580	三abbcfp三a |
581	三abbcfp三a |
582	三abbcfp三a |
583	三abbcfp |
584	三abbcfp三a |
585	taos> select trim(nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') = 0 order by ts limit 5
586	trim(nch2 from '三abbcfp三a') |
587	==================================
588	三abbcfp三a |
589	三abbcfp三a |
590	三abbcfp三a |
591	三abbcfp三a |
592	三abbcfp三a |
593	taos> select trim(both nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') = 0 order by ts limit 5
594	trim(both nch2 from '三abbcfp三a') |
595	=======================================
596	三abbcfp三a |
597	三abbcfp三a |
598	三abbcfp三a |
599	三abbcfp三a |
600	三abbcfp三a |
601	taos> select trim(leading nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') = 0 order by ts limit 5
602	trim(leading nch2 from '三abbcfp三a') |
603	==========================================
604	三abbcfp三a |
605	三abbcfp三a |
606	三abbcfp三a |
607	三abbcfp三a |
608	三abbcfp三a |
609	taos> select trim(trailing nch2 from '三abbcfp三a') from ts_4893.meters where position(nch2 in '三abbcfp三a') = 0 order by ts limit 5
610	trim(trailing nch2 from '三abbcfp三a') |
611	===========================================
612	三abbcfp三a |
613	三abbcfp三a |
614	三abbcfp三a |
615	三abbcfp三a |
616	三abbcfp三a |
617	taos> select trim(var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') != 0 order by ts limit 5
618	trim(var2 from '三abbcfp三a') |
619	==================================
620	bbcfp |
621	三abbcfp三a |
622	三abbcfp三a |
623	三abbcfp三a |
624	三abbcfp三 |
625	taos> select trim(both var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') != 0 order by ts limit 5
626	trim(both var2 from '三abbcfp三a') |
627	=======================================
628	bbcfp |
629	三abbcfp三a |
630	三abbcfp三a |
631	三abbcfp三a |
632	三abbcfp三 |
633	taos> select trim(leading var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') != 0 order by ts limit 5
634	trim(leading var2 from '三abbcfp三a') |
635	==========================================
636	bbcfp三a |
637	三abbcfp三a |
638	三abbcfp三a |
639	三abbcfp三a |
640	三abbcfp三a |
641	taos> select trim(trailing var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') != 0 order by ts limit 5
642	trim(trailing var2 from '三abbcfp三a') |
643	===========================================
644	三abbcfp |
645	三abbcfp三a |
646	三abbcfp三a |
647	三abbcfp三a |
648	三abbcfp三 |
649	taos> select trim(var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') = 0 order by ts limit 5
650	trim(var2 from '三abbcfp三a') |
651	==================================
652	三abbcfp三a |
653	三abbcfp三a |
654	三abbcfp三a |
655	三abbcfp三a |
656	三abbcfp三a |
657	taos> select trim(both var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') = 0 order by ts limit 5
658	trim(both var2 from '三abbcfp三a') |
659	=======================================
660	三abbcfp三a |
661	三abbcfp三a |
662	三abbcfp三a |
663	三abbcfp三a |
664	三abbcfp三a |
665	taos> select trim(leading var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') = 0 order by ts limit 5
666	trim(leading var2 from '三abbcfp三a') |
667	==========================================
668	三abbcfp三a |
669	三abbcfp三a |
670	三abbcfp三a |
671	三abbcfp三a |
672	三abbcfp三a |
673	taos> select trim(trailing var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') = 0 order by ts limit 5
674	trim(trailing var2 from '三abbcfp三a') |
675	===========================================
676	三abbcfp三a |
677	三abbcfp三a |
678	三abbcfp三a |
679	三abbcfp三a |
680	三abbcfp三a |
681	taos> select trim(' A ')
682	trim(' A ') |
683	=======================
684	A |
685	taos> select trim(' 涛思 ')
686	trim(' 涛思 ') |
687	============================
688	涛思 |
689	taos> select trim('a' FROM 'aaab bbba')
690	trim('a' from 'aaab bbba') |
691	==================================
692	b bbb |
693	taos> select trim(LEADING FROM ' aaa ')
694	trim(leading from ' aaa ') |
695	=======================================
696	aaa |
697	taos> select trim(LEADING 'a' FROM ' aaa abab aaaa ')
698	trim(leading 'a' from ' aaa abab aaaa ') |
699	====================================================
700	aaa abab aaaa |
701	taos> select trim(LEADING 'a' FROM 'aaa abab aaaa ')
702	trim(leading 'a' from 'aaa abab aaaa ') |
703	=================================================
704	abab aaaa |
705	taos> select trim(LEADING '北' FROM '北京涛思数据科技有限公司北')
706	trim(leading '北' from '北京涛思数据科技有限公司北 |
707	===================================================================
708	京涛思数据科技有限公司北 |
709	taos> select trim(LEADING '北' FROM '北bei京涛思数据科技有限公司北')
710	trim(leading '北' from '北bei京涛思数据科技有限公司 |
711	===================================================================
712	bei京涛思数据科技有限公司北 |
713	taos> select trim(TRAILING FROM ' aaa abab aaaa ')
714	trim(trailing from ' aaa abab aaaa ') |
715	=================================================
716	aaa abab aaaa |
717	taos> select trim(TRAILING 'a' FROM 'aaa abab aaaa')
718	trim(trailing 'a' from 'aaa abab aaaa') |
719	===============================================
720	aaa abab |
721	taos> select trim(TRAILING 'a' FROM ' aaa abab aaaa')
722	trim(trailing 'a' from ' aaa abab aaaa') |
723	==================================================
724	aaa abab |
725	taos> select trim(TRAILING '北' FROM '北京涛思数据科技有限公司北') as sub
726	sub |
727	=================================
728	北京涛思数据科技有限公司 |
729	taos> select trim(TRAILING '北' FROM '北京涛思数据科技有限公司bei北')
730	trim(trailing '北' from '北京涛思数据科技有限公司be |
731	===================================================================
732	北京涛思数据科技有限公司bei |
733	taos> select trim(BOTH FROM ' aaa abab aaaa ')
734	trim(both from ' aaa abab aaaa ') |
735	=============================================
736	aaa abab aaaa |
737	taos> select trim(BOTH 'a' FROM ' aaa abab aaaa ')
738	trim(both 'a' from ' aaa abab aaaa ') |
739	==================================================
740	aaa abab aaaa |
741	taos> select trim(BOTH 'a' FROM 'aaa abab aaaa')
742	trim(both 'a' from 'aaa abab aaaa') |
743	===========================================
744	abab |
745	taos> select trim(BOTH '北' FROM '北京涛思数据科技有限公司北')
746	trim(both '北' from '北京涛思数据科技有限公司北') |
747	==================================================================
748	京涛思数据科技有限公司 |
749	taos> select trim(nch2 from nch1) from ts_4893.d0 order by ts limit 10
750	trim(nch2 from nch1) |
751	=================================
752	novel |
753	一二三四五六七八九十 |
754	update |
755	prision |
756	novel |
757	novel |
758	again |
759	一二三四五六七八九十 |
760	novel |
761	again |
762	taos> select trim(nch2 from nch1) from ts_4893.meters order by ts limit 10
763	trim(nch2 from nch1) |
764	=================================
765	novel |
766	一二三四五六七八九十 |
767	update |
768	prision |
769	novel |
770	novel |
771	again |
772	一二三四五六七八九十 |
773	novel |
774	again |
775	taos> select trim(nch2 from var1) from ts_4893.d0 order by ts limit 10
776	trim(nch2 from var1) |
777	=================================
778	novel |
779	person |
780	novel |
781	plate |
782	一二三四五六七八九十 |
783	update |
784	prision |
785	person |
786	prision |
787	plate |
788	taos> select trim(nch2 from var1) from ts_4893.meters order by ts limit 10
789	trim(nch2 from var1) |
790	=================================
791	novel |
792	person |
793	novel |
794	plate |
795	一二三四五六七八九十 |
796	update |
797	prision |
798	person |
799	prision |
800	plate |
801	taos> select trim(var2 from nch1) from ts_4893.d0 order by ts limit 10
802	trim(var2 from nch1) |
803	=================================
804	novel |
805	一二三四五六七八九十 |
806	update |
807	prision |
808	novel |
809	novel |
810	again |
811	一二三四五六七八九十 |
812	novel |
813	again |
814	taos> select trim(var2 from nch1) from ts_4893.meters order by ts limit 10
815	trim(var2 from nch1) |
816	=================================
817	novel |
818	一二三四五六七八九十 |
819	update |
820	prision |
821	novel |
822	novel |
823	again |
824	一二三四五六七八九十 |
825	novel |
826	again |
827	taos> select trim(var2 from var1) from ts_4893.d0 order by ts limit 10
828	trim(var2 from var1) |
829	=================================
830	novel |
831	person |
832	novel |
833	plat |
834	一二三四五六七八九十 |
835	update |
836	prision |
837	person |
838	prision |
839	plate |
840	taos> select trim(var2 from var1) from ts_4893.meters order by ts limit 10
841	trim(var2 from var1) |
842	=================================
843	novel |
844	person |
845	novel |
846	plat |
847	一二三四五六七八九十 |
848	update |
849	prision |
850	person |
851	prision |
852	plate |
853	taos> select trim(null)
854	trim(null) |
855	=============
856	NULL |
857	taos> select trim('')
858	trim('') |
859	===========
860	|
861	taos> select trim(leading ' ' from ' hello')
862	trim(leading ' ' from ' hello') |
863	====================================
864	hello |
865	taos> select trim(trailing ' ' from 'hello ')
866	trim(trailing ' ' from 'hello ') |
867	=====================================
868	hello |
869	taos> select trim('0' from '000123000')
870	trim('0' from '000123000') |
871	=============================
872	123 |
873	taos> select trim(' hello ')
874	trim(' hello ') |
875	====================
876	hello |
877	taos> select trim(' apple banana ')
878	trim(' apple banana ') |
879	=============================
880	apple banana |
881	var2 | trim('*' from var2) |
882	==================================================================
883	e | e |
884	taos> select trim('x' from 'hello')
885	trim('x' from 'hello') |
886	=========================
887	hello |
888	taos> select trim('longer' from 'short')
889	trim('longer' from 'short') |
890	==============================
891	short |
892	taos> select trim('hello')
893	trim('hello') |
894	================
895	hello |
896	taos> select trim(' 12345 ')
897	trim(' 12345 ') |
898	======================
899	12345 |
900	==========================================
901	hello world |
902	taos> select trim(upper(' hello world '))
903	trim(upper(' hello world ')) |
904	=================================
905	HELLO WORLD |
906	==========================================
907	hello world |
908	===============================================
909	---hello-world--- |
910	name | trim(name) |
911	==================================================================
912	lili | lili |
913	var1 | trim(trailing '!' from var1) |
914	==================================================================
915	novel | novel |
916	nch1 | trim(leading '-' from nch1) |
917	==================================================================
918	novel | novel |