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(nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
146	trim(nch2 from nch1) |
147	=================================
148	novel |
149	abc一二三abc一二三abc |
150	一二三abc |
151	一二三四五六七八九十 |
152	person |
153	taos> select trim(both nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
154	trim(both nch2 from nch1) |
155	=================================
156	novel |
157	abc一二三abc一二三abc |
158	一二三abc |
159	一二三四五六七八九十 |
160	person |
161	taos> select trim(leading nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
162	trim(leading nch2 from nch1) |
163	=================================
164	novel |
165	abc一二三abc一二三abc |
166	一二三abc |
167	一二三四五六七八九十 |
168	person |
169	taos> select trim(trailing nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) != 0 order by ts limit 5
170	trim(trailing 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(nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
178	trim(nch2 from nch1) |
179	=================================
180	novel |
181	一二三四五六七八九十 |
182	update |
183	prision |
184	novel |
185	taos> select trim(both nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
186	trim(both nch2 from nch1) |
187	=================================
188	novel |
189	一二三四五六七八九十 |
190	update |
191	prision |
192	novel |
193	taos> select trim(leading nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
194	trim(leading nch2 from nch1) |
195	=================================
196	novel |
197	一二三四五六七八九十 |
198	update |
199	prision |
200	novel |
201	taos> select trim(trailing nch2 from nch1) from ts_4893.meters where position(nch2 in nch1) = 0 order by ts limit 5
202	trim(trailing 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(var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
210	trim(var2 from nch1) |
211	=================================
212	novel |
213	novel |
214	abc |
215	123321三二一 |
216	abc一二三abc一二三ab |
217	taos> select trim(both var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
218	trim(both var2 from nch1) |
219	=================================
220	novel |
221	novel |
222	abc |
223	123321三二一 |
224	abc一二三abc一二三ab |
225	taos> select trim(leading var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
226	trim(leading var2 from nch1) |
227	=================================
228	novel |
229	novel |
230	abc |
231	123321三二一 |
232	abc一二三abc一二三abc |
233	taos> select trim(trailing var2 from nch1) from ts_4893.meters where position(var2 in nch1) != 0 order by ts limit 5
234	trim(trailing var2 from nch1) |
235	=================================
236	novel |
237	novel |
238	一二三abc |
239	一二三123321三二一 |
240	abc一二三abc一二三ab |
241	taos> select trim(var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
242	trim(var2 from nch1) |
243	=================================
244	一二三四五六七八九十 |
245	update |
246	prision |
247	novel |
248	novel |
249	taos> select trim(both var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
250	trim(both var2 from nch1) |
251	=================================
252	一二三四五六七八九十 |
253	update |
254	prision |
255	novel |
256	novel |
257	taos> select trim(leading var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
258	trim(leading var2 from nch1) |
259	=================================
260	一二三四五六七八九十 |
261	update |
262	prision |
263	novel |
264	novel |
265	taos> select trim(trailing var2 from nch1) from ts_4893.meters where position(var2 in nch1) = 0 order by ts limit 5
266	trim(trailing 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(nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
274	trim(nch2 from var1) |
275	=================================
276	一二三abc |
277	abc一二三abc一二三abc |
278	bc一二三abc一二三abc |
279	novel |
280	update |
281	taos> select trim(both nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
282	trim(both nch2 from var1) |
283	=================================
284	一二三abc |
285	abc一二三abc一二三abc |
286	bc一二三abc一二三abc |
287	novel |
288	update |
289	taos> select trim(leading nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
290	trim(leading nch2 from var1) |
291	=================================
292	一二三abc |
293	abc一二三abc一二三abc |
294	bc一二三abc一二三abc |
295	novel |
296	update |
297	taos> select trim(trailing nch2 from var1) from ts_4893.meters where position(nch2 in var1) != 0 order by ts limit 5
298	trim(trailing nch2 from var1) |
299	=================================
300	一二三abc |
301	abc一二三abc一二三abc |
302	abc一二三abc一二三abc |
303	novel |
304	update |
305	taos> select trim(nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
306	trim(nch2 from var1) |
307	=================================
308	novel |
309	person |
310	novel |
311	plate |
312	一二三四五六七八九十 |
313	taos> select trim(both nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
314	trim(both nch2 from var1) |
315	=================================
316	novel |
317	person |
318	novel |
319	plate |
320	一二三四五六七八九十 |
321	taos> select trim(leading nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
322	trim(leading nch2 from var1) |
323	=================================
324	novel |
325	person |
326	novel |
327	plate |
328	一二三四五六七八九十 |
329	taos> select trim(trailing nch2 from var1) from ts_4893.meters where position(nch2 in var1) = 0 order by ts limit 5
330	trim(trailing 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(var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
338	trim(var2 from var1) |
339	=================================
340	novel |
341	plat |
342	一二三abc |
343	123321三二一 |
344	abc一二三abc一二三ab |
345	taos> select trim(both var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
346	trim(both var2 from var1) |
347	=================================
348	novel |
349	plat |
350	一二三abc |
351	123321三二一 |
352	abc一二三abc一二三ab |
353	taos> select trim(leading var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
354	trim(leading var2 from var1) |
355	=================================
356	novel |
357	plate |
358	一二三abc |
359	123321三二一 |
360	abc一二三abc一二三abc |
361	taos> select trim(trailing var2 from var1) from ts_4893.meters where position(var2 in var1) != 0 order by ts limit 5
362	trim(trailing var2 from var1) |
363	=================================
364	novel |
365	plat |
366	一二三abc |
367	一二三123321三二一 |
368	abc一二三abc一二三ab |
369	taos> select trim(var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
370	trim(var2 from var1) |
371	=================================
372	person |
373	novel |
374	一二三四五六七八九十 |
375	update |
376	prision |
377	taos> select trim(both var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
378	trim(both var2 from var1) |
379	=================================
380	person |
381	novel |
382	一二三四五六七八九十 |
383	update |
384	prision |
385	taos> select trim(leading var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
386	trim(leading var2 from var1) |
387	=================================
388	person |
389	novel |
390	一二三四五六七八九十 |
391	update |
392	prision |
393	taos> select trim(trailing var2 from var1) from ts_4893.meters where position(var2 in var1) = 0 order by ts limit 5
394	trim(trailing 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('一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
402	trim('一' from nch1) |
403	=================================
404	二三四五六七八九十 |
405	二三四五六七八九十 |
406	abc一二三abc一二三abc |
407	|| |
408	二三123321三二 |
409	taos> select trim(both '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
410	trim(both '一' from nch1) |
411	=================================
412	二三四五六七八九十 |
413	二三四五六七八九十 |
414	abc一二三abc一二三abc |
415	|| |
416	二三123321三二 |
417	taos> select trim(leading '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
418	trim(leading '一' from nch1) |
419	=================================
420	二三四五六七八九十 |
421	二三四五六七八九十 |
422	abc一二三abc一二三abc |
423	||一一一一 |
424	二三123321三二一 |
425	taos> select trim(trailing '一' from nch1) from ts_4893.meters where position('一' in nch1) != 0 order by ts limit 5
426	trim(trailing '一' from nch1) |
427	=================================
428	一二三四五六七八九十 |
429	一二三四五六七八九十 |
430	abc一二三abc一二三abc |
431	一一一一一|| |
432	一二三123321三二 |
433	taos> select trim('一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
434	trim('一' from nch1) |
435	=================================
436	novel |
437	update |
438	prision |
439	novel |
440	novel |
441	taos> select trim(both '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
442	trim(both '一' from nch1) |
443	=================================
444	novel |
445	update |
446	prision |
447	novel |
448	novel |
449	taos> select trim(leading '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
450	trim(leading '一' from nch1) |
451	=================================
452	novel |
453	update |
454	prision |
455	novel |
456	novel |
457	taos> select trim(trailing '一' from nch1) from ts_4893.meters where position('一' in nch1) = 0 order by ts limit 5
458	trim(trailing '一' from nch1) |
459	=================================
460	novel |
461	update |
462	prision |
463	novel |
464	novel |
465	taos> select trim('一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
466	trim('一' from var1) |
467	=================================
468	二三四五六七八九十 |
469	二三abc |
470	abc一二三abc一二三abc |
471	二三123321三二 |
472	|| |
473	taos> select trim(both '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
474	trim(both '一' from var1) |
475	=================================
476	二三四五六七八九十 |
477	二三abc |
478	abc一二三abc一二三abc |
479	二三123321三二 |
480	|| |
481	taos> select trim(leading '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
482	trim(leading '一' from var1) |
483	=================================
484	二三四五六七八九十 |
485	二三abc |
486	abc一二三abc一二三abc |
487	二三123321三二一 |
488	||一一一一 |
489	taos> select trim(trailing '一' from var1) from ts_4893.meters where position('一' in var1) != 0 order by ts limit 5
490	trim(trailing '一' from var1) |
491	=================================
492	一二三四五六七八九十 |
493	一二三abc |
494	abc一二三abc一二三abc |
495	一二三123321三二 |
496	一一一一一|| |
497	taos> select trim('一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
498	trim('一' from var1) |
499	=================================
500	novel |
501	person |
502	novel |
503	plate |
504	update |
505	taos> select trim(both '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
506	trim(both '一' from var1) |
507	=================================
508	novel |
509	person |
510	novel |
511	plate |
512	update |
513	taos> select trim(leading '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
514	trim(leading '一' from var1) |
515	=================================
516	novel |
517	person |
518	novel |
519	plate |
520	update |
521	taos> select trim(trailing '一' from var1) from ts_4893.meters where position('一' in var1) = 0 order by ts limit 5
522	trim(trailing '一' from var1) |
523	=================================
524	novel |
525	person |
526	novel |
527	plate |
528	update |
529	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
530	trim(nch2 from '三abbcfp三a') |
531	==================================
532	三abbcfp三a |
533	三abbcfp三a |
534	三abbcfp三a |
535	bbcfp |
536	三abbcfp三a |
537	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
538	trim(both nch2 from '三abbcfp三a') |
539	=======================================
540	三abbcfp三a |
541	三abbcfp三a |
542	三abbcfp三a |
543	bbcfp |
544	三abbcfp三a |
545	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
546	trim(leading nch2 from '三abbcfp三a') |
547	==========================================
548	三abbcfp三a |
549	三abbcfp三a |
550	三abbcfp三a |
551	bbcfp三a |
552	三abbcfp三a |
553	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
554	trim(trailing nch2 from '三abbcfp三a') |
555	===========================================
556	三abbcfp三a |
557	三abbcfp三a |
558	三abbcfp三a |
559	三abbcfp |
560	三abbcfp三a |
561	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
562	trim(nch2 from '三abbcfp三a') |
563	==================================
564	三abbcfp三a |
565	三abbcfp三a |
566	三abbcfp三a |
567	三abbcfp三a |
568	三abbcfp三a |
569	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
570	trim(both nch2 from '三abbcfp三a') |
571	=======================================
572	三abbcfp三a |
573	三abbcfp三a |
574	三abbcfp三a |
575	三abbcfp三a |
576	三abbcfp三a |
577	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
578	trim(leading 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三a |
584	三abbcfp三a |
585	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
586	trim(trailing 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(var2 from '三abbcfp三a') from ts_4893.meters where position(var2 in '三abbcfp三a') != 0 order by ts limit 5
594	trim(var2 from '三abbcfp三a') |
595	==================================
596	bbcfp |
597	三abbcfp三a |
598	三abbcfp三a |
599	三abbcfp三a |
600	三abbcfp三 |
601	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
602	trim(both var2 from '三abbcfp三a') |
603	=======================================
604	bbcfp |
605	三abbcfp三a |
606	三abbcfp三a |
607	三abbcfp三a |
608	三abbcfp三 |
609	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
610	trim(leading var2 from '三abbcfp三a') |
611	==========================================
612	bbcfp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(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
618	trim(trailing var2 from '三abbcfp三a') |
619	===========================================
620	三abbcfp |
621	三abbcfp三a |
622	三abbcfp三a |
623	三abbcfp三a |
624	三abbcfp三 |
625	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
626	trim(var2 from '三abbcfp三a') |
627	==================================
628	三abbcfp三a |
629	三abbcfp三a |
630	三abbcfp三a |
631	三abbcfp三a |
632	三abbcfp三a |
633	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
634	trim(both var2 from '三abbcfp三a') |
635	=======================================
636	三abbcfp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(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
642	trim(leading var2 from '三abbcfp三a') |
643	==========================================
644	三abbcfp三a |
645	三abbcfp三a |
646	三abbcfp三a |
647	三abbcfp三a |
648	三abbcfp三a |
649	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
650	trim(trailing 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(' A ')
658	trim(' A ') |
659	=======================
660	A |
661	taos> select trim(' 涛思 ')
662	trim(' 涛思 ') |
663	============================
664	涛思 |
665	taos> select trim('a' FROM 'aaab bbba')
666	trim('a' from 'aaab bbba') |
667	==================================
668	b bbb |
669	taos> select trim(LEADING FROM ' aaa ')
670	trim(leading from ' aaa ') |
671	=======================================
672	aaa |
673	taos> select trim(LEADING 'a' FROM ' aaa abab aaaa ')
674	trim(leading 'a' from ' aaa abab aaaa ') |
675	====================================================
676	aaa abab aaaa |
677	taos> select trim(LEADING 'a' FROM 'aaa abab aaaa ')
678	trim(leading 'a' from 'aaa abab aaaa ') |
679	=================================================
680	abab aaaa |
681	taos> select trim(LEADING '北' FROM '北京涛思数据科技有限公司北')
682	trim(leading '北' from '北京涛思数据科技有限公司北 |
683	===================================================================
684	京涛思数据科技有限公司北 |
685	taos> select trim(LEADING '北' FROM '北bei京涛思数据科技有限公司北')
686	trim(leading '北' from '北bei京涛思数据科技有限公司 |
687	===================================================================
688	bei京涛思数据科技有限公司北 |
689	taos> select trim(TRAILING FROM ' aaa abab aaaa ')
690	trim(trailing from ' aaa abab aaaa ') |
691	=================================================
692	aaa abab aaaa |
693	taos> select trim(TRAILING 'a' FROM 'aaa abab aaaa')
694	trim(trailing 'a' from 'aaa abab aaaa') |
695	===============================================
696	aaa abab |
697	taos> select trim(TRAILING 'a' FROM ' aaa abab aaaa')
698	trim(trailing 'a' from ' aaa abab aaaa') |
699	==================================================
700	aaa abab |
701	taos> select trim(TRAILING '北' FROM '北京涛思数据科技有限公司北') as sub
702	sub |
703	=================================
704	北京涛思数据科技有限公司 |
705	taos> select trim(TRAILING '北' FROM '北京涛思数据科技有限公司bei北')
706	trim(trailing '北' from '北京涛思数据科技有限公司be |
707	===================================================================
708	北京涛思数据科技有限公司bei |
709	taos> select trim(BOTH FROM ' aaa abab aaaa ')
710	trim(both from ' aaa abab aaaa ') |
711	=============================================
712	aaa abab aaaa |
713	taos> select trim(BOTH 'a' FROM ' aaa abab aaaa ')
714	trim(both 'a' from ' aaa abab aaaa ') |
715	==================================================
716	aaa abab aaaa |
717	taos> select trim(BOTH 'a' FROM 'aaa abab aaaa')
718	trim(both 'a' from 'aaa abab aaaa') |
719	===========================================
720	abab |
721	taos> select trim(BOTH '北' FROM '北京涛思数据科技有限公司北')
722	trim(both '北' from '北京涛思数据科技有限公司北') |
723	==================================================================
724	京涛思数据科技有限公司 |
725	taos> select trim(nch2 from nch1) from ts_4893.d0 order by ts limit 10
726	trim(nch2 from nch1) |
727	=================================
728	novel |
729	一二三四五六七八九十 |
730	update |
731	prision |
732	novel |
733	novel |
734	again |
735	一二三四五六七八九十 |
736	novel |
737	again |
738	taos> select trim(nch2 from nch1) from ts_4893.meters order by ts limit 10
739	trim(nch2 from nch1) |
740	=================================
741	novel |
742	一二三四五六七八九十 |
743	update |
744	prision |
745	novel |
746	novel |
747	again |
748	一二三四五六七八九十 |
749	novel |
750	again |
751	taos> select trim(nch2 from var1) from ts_4893.d0 order by ts limit 10
752	trim(nch2 from var1) |
753	=================================
754	novel |
755	person |
756	novel |
757	plate |
758	一二三四五六七八九十 |
759	update |
760	prision |
761	person |
762	prision |
763	plate |
764	taos> select trim(nch2 from var1) from ts_4893.meters order by ts limit 10
765	trim(nch2 from var1) |
766	=================================
767	novel |
768	person |
769	novel |
770	plate |
771	一二三四五六七八九十 |
772	update |
773	prision |
774	person |
775	prision |
776	plate |
777	taos> select trim(var2 from nch1) from ts_4893.d0 order by ts limit 10
778	trim(var2 from nch1) |
779	=================================
780	novel |
781	一二三四五六七八九十 |
782	update |
783	prision |
784	novel |
785	novel |
786	again |
787	一二三四五六七八九十 |
788	novel |
789	again |
790	taos> select trim(var2 from nch1) from ts_4893.meters order by ts limit 10
791	trim(var2 from nch1) |
792	=================================
793	novel |
794	一二三四五六七八九十 |
795	update |
796	prision |
797	novel |
798	novel |
799	again |
800	一二三四五六七八九十 |
801	novel |
802	again |
803	taos> select trim(var2 from var1) from ts_4893.d0 order by ts limit 10
804	trim(var2 from var1) |
805	=================================
806	novel |
807	person |
808	novel |
809	plat |
810	一二三四五六七八九十 |
811	update |
812	prision |
813	person |
814	prision |
815	plate |
816	taos> select trim(var2 from var1) from ts_4893.meters order by ts limit 10
817	trim(var2 from var1) |
818	=================================
819	novel |
820	person |
821	novel |
822	plat |
823	一二三四五六七八九十 |
824	update |
825	prision |
826	person |
827	prision |
828	plate |
829	taos> select trim(null)
830	trim(null) |
831	=============
832	NULL |
833	taos> select trim('')
834	trim('') |
835	===========
836	|
837	taos> select trim(leading ' ' from ' hello')
838	trim(leading ' ' from ' hello') |
839	====================================
840	hello |
841	taos> select trim(trailing ' ' from 'hello ')
842	trim(trailing ' ' from 'hello ') |
843	=====================================
844	hello |
845	taos> select trim('0' from '000123000')
846	trim('0' from '000123000') |
847	=============================
848	123 |
849	taos> select trim(' hello ')
850	trim(' hello ') |
851	====================
852	hello |
853	taos> select trim(' apple banana ')
854	trim(' apple banana ') |
855	=============================
856	apple banana |
857	var2 | trim('*' from var2) |
858	==================================================================
859	e | e |
860	taos> select trim('x' from 'hello')
861	trim('x' from 'hello') |
862	=========================
863	hello |
864	taos> select trim('longer' from 'short')
865	trim('longer' from 'short') |
866	==============================
867	short |
868	taos> select trim('hello')
869	trim('hello') |
870	================
871	hello |
872	taos> select trim(' 12345 ')
873	trim(' 12345 ') |
874	======================
875	12345 |
876	==========================================
877	hello world |
878	taos> select trim(upper(' hello world '))
879	trim(upper(' hello world ')) |
880	=================================
881	HELLO WORLD |
882	==========================================
883	hello world |
884	===============================================
885	---hello-world--- |
886	name | trim(name) |
887	==================================================================
888	lili | lili |
889	var1 | trim(trailing '!' from var1) |
890	==================================================================
891	novel | novel |
892	nch1 | trim(leading '-' from nch1) |
893	==================================================================
894	novel | novel |