dest\u662f\u5c06src\u66ff\u6362\u6210\u8fd9\u4e2a\u5b57\u7b26<\/li><\/ul>\n\n\n\n\u5982\u4e0b\u662f\u6700\u5e38\u89c1\u7684\u4f8b\u5b50\uff0c\u5c06\u5b57\u7b26F\u66ff\u6362\u6210G<\/p>\n\n\n\n
gbase> create table t3(id int, name varchar(200),address varchar(200));\nQuery OK, 0 rows affected (Elapsed: 00:00:00.64)\n\ngbase> insert into t3 values (1,'First','111111111111');\nQuery OK, 1 row affected (Elapsed: 00:00:00.32)\n\ngbase> select * from t3;\n+------+-------+--------------+\n| id | name | address |\n+------+-------+--------------+\n| 1 | First | 111111111111 |\n+------+-------+--------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase> select name,replace(name,'F','G') from t3;\n+-------+-----------------------+\n| name | replace(name,'F','G') |\n+-------+-----------------------+\n| First | Girst |\n+-------+-----------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\n<\/code><\/pre>\n\n\n\n<\/span>\u66ff\u6362\u5185\u5b58\u8bc4\u4f30<\/span><\/h2>\n\n\n\n\u5728\u66ff\u6362\u65f6\uff0c\u6240\u9700\u7684\u5185\u5b58\u662f \u539f\u59cb\u5b57\u7b26\u4e32str\u7684\u957f\u5ea6 * \u66ff\u6362\u540e\u5b57\u7b26\u4e32dest\u7684\u957f\u5ea6\u3002<\/p>\n\n\n\n
\u56e0\u4e3a\u539f\u59cb\u5b57\u7b26\u4e32\u91cc\u9762\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u90fd\u6709\u53ef\u80fd\u88ab\u66ff\u6362\uff0c\u800c\u5185\u5b58\u8bc4\u4f30\u662f\u63d0\u524d\u505a\u7684\uff0c\u6240\u4ee5\u53ea\u80fd\u7528\u6700\u60b2\u89c2\u7684\u573a\u666f\u8fdb\u884c\u3002<\/p>\n\n\n\n
<\/span>\u62a5\u9519\u573a\u666f<\/span><\/h2>\n\n\n\n\u5982\u679c\u66ff\u6362\u540e\u7684\u5b57\u7b26\u4e32\u662f\u4e00\u4e2a\u5b57\u6bb5\uff0c\u4e14\u957f\u5ea6\u8f83\u957f\uff0c\u90a3\u4e48\u5728\u8bc4\u4f30\u662f\u5c31\u53ef\u80fd\u8d85\u8fc732K, \u4ece\u800c\u4ece\u4e00\u4e2avarchar\u66ff\u6362\u53d8\u6210\u4e00\u4e2alongtext\u7684\u66ff\u6362\u3002\u800c\u540e\u8005\u7684\u6700\u5927\u957f\u5ea6\u4e3a64M\uff0c\u5f53\u505agroup,order\u65f6\uff0c\u6240\u9700\u8981\u7684\u5185\u5b58\u6700\u5c11\u65f64G\u4ee5\u4e0a\uff0c\u5982\u679c\u7528\u6237\u6ca1\u6709\u914d\u7f6e\u8fd9\u7c7b\u53c2\u6570\uff0c\u6709\u53ef\u80fd\u51fa\u73b0\u6240\u9700\u5185\u5b58\u8d85\u8fc7\u9610\u8ff0\u4ece\u800c\u62a5\u9519\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n
Express out of resources error:too large gbase_buffer, has exceeded the gbase_buffer_hgrby. Total_width:67108888 no_rows:67 Gbase_buffer_hgrby: 33554432<\/code><\/pre>\n\n\n\n\u6bd4\u5982<\/p>\n\n\n\n
CREATE TABLE \"test1\" (\n \"id\" int(11) DEFAULT NULL,\n \"name\" varchar(200) DEFAULT NULL,\n \"address\" varchar(1000) DEFAULT NULL\n) \n\u968f\u4fbfinsert\u70b9\u6570\u636e\n\ngbase> insert into test1 values(1,'123445','address1');\nQuery OK, 1 row affected (Elapsed: 00:00:00.40)\n\ngbase> select id,name,replace(name,'4',address) c1 from test1 group by id,name,address;\n+------+--------+----------------------+\n| id | name | c1 |\n+------+--------+----------------------+\n| 1 | 123445 | 123address1address15 |\n+------+--------+----------------------+\n1 row in set (Elapsed: 00:00:00.06)\n\ngbase> insert into test1 values(2,'123445645656','address2');\nQuery OK, 1 row affected (Elapsed: 00:00:00.45)\n\ngbase> select id,name,replace(name,'4',address) c1 from test1 group by id,name,address;\n+------+--------------+-----------------------------------+\n| id | name | c1 |\n+------+--------------+-----------------------------------+\n| 1 | 123445 | 123address1address15 |\n| 2 | 123445645656 | 123address2address256address25656 |\n+------+--------------+-----------------------------------+\n2 rows in set (Elapsed: 00:00:00.07)\n\ngbase> insert into test1 values(3,'12344564565633','ad212dress2');\nQuery OK, 1 row affected (Elapsed: 00:00:00.33)\n\n\ngbase> select id,name,replace(name,'4',address) c1 from test1 group by id,name,address;\nERROR 1708 (HY000): [2001::201:5050](GBA-02AD-0005)Failed to query in gnode:\nDETAIL: (GBA-01EX-0006) Express out of resources error:too large gbase_buffer, has exceeded the gbase_buffer_hgrby. Total_width:600088 no_rows:67 Gbase_buffer_hgrby: 33554432\nSQL: SELECT \/*2001::201_353_42_2023-01-18_11:49:28*\/ \/*+ TID('2048512') *\/ `_tmp_rht_3372351498_353_t93_1_1673851711_s_n1`.`c2` AS `id`, `_tmp_rht_3372351498_353_t93_1_1673851711_s_n1`.`c3` AS `name`, replace(`_tmp_rht_3372351498_353_t93_1_1673851711_s_n1`.`c3`, '4', `_tmp_rht_3\ngbase> select * from test1;\n+------+----------------+-------------+\n| id | name | address |\n+------+----------------+-------------+\n| 1 | 123445 | address1 |\n| 2 | 123445645656 | address2 |\n| 3 | 12344564565633 | ad212dress2 |\n+------+----------------+-------------+\n3 rows in set (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<\/span>Solution<\/span><\/h2>\n\n\n\n\u7531\u4e8e\u53c2\u4e0e\u8fd0\u7b97\u7684\u5b57\u6bb5\u5b9a\u4e49\u5bbd\u5ea6\u8bc4\u4f30\u7ed3\u679c\u8d85\u8fc7\u4e8632K, \u6240\u4ee5\u53ef\u4ee5\u901a\u8fc7\u63d0\u9ad8\u53c2\u6570\u503c\uff0c\u9650\u5236\u7ed3\u679c\u5bbd\u5ea6\uff0c\u4ee5\u53ca\u65b0\u7248\u672c\u7684\u53c2\u6570\u63a7\u5236<\/p>\n\n\n\n
<\/span>\u63d0\u9ad8\u7b97\u5b50\u53c2\u6570\u7684\u503c\uff0c\u6bd4\u5982\u8bbe\u7f6e\u4e3a6G<\/span><\/h3>\n\n\n\nset gbase_buffer_hgrby=6*1024*1024*1024;<\/code><\/pre>\n\n\n\n<\/span>\u9650\u5236\u7ed3\u679c\u5bbd\u5ea6<\/span><\/h3>\n\n\n\n\u4e1a\u52a1\u4e0a\u786e\u8ba4\u7ed3\u679c\u4e0d\u4f1a\u8d85\u8fc71000\uff0c \u90a3\u4e48\u53ef\u4ee5\u7528\u8fc7substr\u51fd\u6570\uff0c\u8ba9\u6267\u884c\u7ed3\u679c\u4e0d\u4f1a\u523032K\u4ee5\u4e0a\u3002<\/p>\n\n\n\n
gbase> select id,name,substr(replace(name,'4',address),0,1000) c1 from test1 group by id,name,address;\n+------+----------------+----------------------------------------------+\n| id | name | c1 |\n+------+----------------+----------------------------------------------+\n| 1 | 123445 | 123address1address15 |\n| 3 | 12344564565633 | 123ad212dress2ad212dress256ad212dress2565633 |\n| 2 | 123445645656 | 123address2address256address25656 |\n+------+----------------+----------------------------------------------+\n3 rows in set (Elapsed: 00:00:00.08)\n\ngbase>\n<\/code><\/pre>\n\n\n\n<\/span>\u65b0\u7248\u672c\u9650\u5236\u53c2\u6570<\/span><\/h3>\n\n\n\n\u8be5\u53c2\u6570\u57282023\u5e743\u6708\u4efd\u7684\u7248\u672c\u53ef\u80fd\u4f1a\u652f\u6301\uff0c\u8001\u7248\u672c\u8fd8\u6ca1\u6709\u8fd9\u4e2a\u3002\u5176\u529f\u80fd\u4e0e group_concat_max_len \u53c2\u6570\u5b8c\u5168\u4e00\u6837\uff0c\u9650\u5236\u51fd\u6570\u6267\u884c\u7ed3\u679c\u7684\u5bbd\u5ea6\u3002<\/p>\n\n\n\n
estimate_func_max_len<\/code><\/pre>\n\n\n\n\u9ed8\u8ba4\u503c\u4e3a0\uff0c\u4e0d\u9650\u5236\uff0c\u7b49\u540c\u4e0e\u73b0\u6709longblob\u7684\u6700\u5927\u503c64M\u3002<\/p>\n\n\n\n
\u5176\u5b83\u503c\u4e3a\u9650\u5236\u5b57\u8282\u5bbd\u5ea6\uff0c\u4e0e\u5b57\u7b26\u96c6\u6709\u5173\uff0c\u5982\u679c\u662futf8,\u5219\u5b9e\u9645\u5bbd\u5ea6\u4e3a\u53c2\u6570\/3, utf8mb4\u5219\u662f \u53c2\u6570\/4<\/p>\n\n\n\n
gbase> set estimate_func_max_len=1000;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.02)\n\ngbase> select id,name,replace(name,'4',address) c1 from test1 group by id,name,address;\n+------+----------------+----------------------------------------------+\n| id | name | c1 |\n+------+----------------+----------------------------------------------+\n| 1 | 123445 | 123address1address15 |\n| 3 | 12344564565633 | 123ad212dress2ad212dress256ad212dress2565633 |\n| 2 | 123445645656 | 123address2address256address25656 |\n+------+----------------+----------------------------------------------+\n3 rows in set (Elapsed: 00:00:00.10)\n<\/code><\/pre>\n\n\n\n\u5982\u679c\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u7ed3\u679c\u8d85\u8fc7\u4e86\u53c2\u6570\u503c\uff0c\u5219\u62a5\u9519<\/p>\n\n\n\n
gbase> set estimate_func_max_len=10;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.01)\n\ngbase> select id,name,replace(name,'4',address) c1 from test1 group by id,name,address;\nERROR 1708 (HY000): [2001::201:5050](GBA-02AD-0005)Failed to query in gnode:\nDETAIL: (GBA-01EX-700) Gbase general error: The current length of the replace function result is (13), which exceeds the value of parameter estimate_func_max_len by (10)\nSQL: SELECT \/*2001::201_14_111_2023-02-08_11:01:39*\/ \/*+ TID('2293968') *\/ `_tmp_rht_3372351498_14_t66_1_1675819619_s_n1`.`c2` AS `id`, `_tmp_rht_3372351498_14_t66_1_1675819619_s_n1`.`c3` AS `name`, replace(`_tmp_rht_3372351498_14_t66_1_1675819619_s_n1`.`c3`, '4', `_tmp_rht_337235149\ngbase>\n<\/code><\/pre>\n\n\n\n<\/p>","protected":false},"excerpt":{"rendered":"
replace\u4f5c\u4e3aGBase 8a\u7684\u5b57\u7b26\u66ff\u6362\u51fd\u6570\uff0c\u7528\u6cd5\u7b80\u5355\uff0c\u4f46\u5982\u679c\u53c2\u6570\u8bbe\u7f6e\u4e0d\u5f53\uff0c\u4e5f\u4f1a\u51fa\u73b0\u4f7f\u7528\u6545\u969c\u3002\u7279\u522b\u662f\u76ee\u6807\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u5982\u679c\u6bd4\u8f83\u5927\u65f6\uff0c\u5bb9\u6613\u51fa\u73b0\u5185\u5b58\u53c2\u6570\u4e0d\u8db3\uff0c\u4ece\u800c\u62a5\u9519\u7684\u95ee\u9898\u3002\u4e00\u4e9b\u5176\u5b83\u51fd\u6570\u4e5f\u6709\u7c7b\u4f3c\u95ee\u9898\uff0c\u5305\u62ecreplace\uff0cconcat\uff0cconcat_ws\uff0cinsert\uff0crepeat\uff0clpad\uff0crpad\uff0chex\uff0cmake_set\uff0cexport_set\u7b49\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-10695","post","type-post","status-publish","format-standard","hentry","category-gbase8a"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/10695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=10695"}],"version-history":[{"count":8,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/10695\/revisions"}],"predecessor-version":[{"id":11414,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/10695\/revisions\/11414"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=10695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=10695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=10695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}