MYBATIS Dynamic SQLenables programmers to build queries based on the scenario dynamically. For example, if you want to search the Student data base, based on the name of the student in MyBatis, you have to write the query using null"> WHERE name LIKE #{name} This statement provides an optional text search type of functionality. If you pass in no name, then all active records will be returned. But if you switch statement. It helps to choose only one case among many options. The following example will search only by name if it is provided, and if the name is not given, then only by id −- MYBATIS Quick Guideenables programmers to build queries based on the scenario dynamically. For example, if you want to search the Student data base, based on the name of the student in MyBatis, you have to write the query using null"> WHERE name LIKE #{name} This statement provides an optional text search type of functionality. If you pass in no name, then all active records will be returned. But if you switch statement. It helps to choose only one case among many options. The following example will search only by name if it is provided, and if the name is not given, then only by id −
- Apache ShardingSphere 5.1.1 DocumentHANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test HANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test will not do that in order to save the bandwidth. Pagination Solution Optimization For LIMIT cannot search for data through indexes, if the ID continuity can be guaranteed, pagination by ID is a better solution:0 码力 | 458 页 | 3.43 MB | 1 年前3
- Apache ShardingSphere 5.1.2 DocumentHANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test HANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test will not do that in order to save the bandwidth. Pagination Solution Optimization For LIMIT cannot search for data through indexes, if the ID continuity can be guaranteed, pagination by ID is a better solution:0 码力 | 503 页 | 3.66 MB | 1 年前3
- Apache ShardingSphere 5.0.0-alpha Documentof data still needs to be transmitted to ShardingSphere’s memory space for ordering. LIMIT cannot search for data by index, so paginating with ID is a better solution on the premise that the ID continuity guaranteed. For example: SELECT * FROM t_order WHERE id > 100000 AND id <= 100010 ORDER BY id; Or search the next page through the ID of the last query result, for example: SELECT * FROM t_order WHERE will not do that in order to save the bandwidth. Pagination Solution Optimization For LIMIT cannot search for data through indexes, if the ID continuity can be guaranteed, pagination by ID is a better solution:0 码力 | 311 页 | 2.09 MB | 1 年前3
- Apache ShardingSphere 5.0.0 Documentwill not do that in order to save the bandwidth. Pagination Solution Optimization For LIMIT cannot search for data through indexes, if the ID continuity can be guaranteed, pagination by ID is a better solution: of data still needs to be transmitted to ShardingSphere’s memory space for ordering. LIMIT cannot search for data by index, so paginating with ID is a better solution on the premise that the ID continuity guaranteed. For example: SELECT * FROM t_order WHERE id > 100000 AND id <= 100010 ORDER BY id; Or search the next page through the ID of the last query result, for example: SELECT * FROM t_order WHERE0 码力 | 403 页 | 3.15 MB | 1 年前3
- Apache ShardingSphere 5.4.1 Documentto‘public’schema. Other schemas need to declare before the table name, and do not support ‘SEARCH_PATH’to modify the schema search path. Normal Queries • main statement SELECT SELECT select_expr [, select_expr META-INF/services to make the JVM load these SPI implementations. More detail for SPI usage, please search by yourself. Other ShardingSphere functionality implementation will take effect in the same way0 码力 | 572 页 | 3.73 MB | 1 年前3
- Apache ShardingSphere ElasticJob document Nov 01, 2023function, actively grab the unallocated shards after a certain server is exe‐ cuted, and actively search for available servers to perform tasks after a certain server goes offline. Registry Data Structure0 码力 | 101 页 | 1.53 MB | 1 年前3
- Apache ShardingSphere v5.5.0 documentto‘public’schema. Other schemas need to declare before the table name, and do not support ‘SEARCH_PATH’to modify the schema search path. Normal Queries • main statement SELECT SELECT select_expr [, select_expr META-INF/services to make the JVM load these SPI implementations. More detail for SPI usage, please search by yourself. Other ShardingSphere functionality implementation will take effect in the same way0 码力 | 602 页 | 3.85 MB | 1 年前3
- Apache ShardingSphere 中文文档 5.1.1HANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test HANDLER plpgsql_call_handler CREATE STATISTICS alt_stat1 ON a, b FROM alt_regress_1 CREATE TEXT SEARCH DICTIONARY alt_ts_dict1 (template=simple) CREATE RULE def_view_test_ins AS ON INSERT TO def_view_test0 码力 | 409 页 | 4.47 MB | 1 年前3
共 17 条
- 1
- 2