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column values as column names in thepsql query

由 ﹥＞﹥吖頭↗ 提交于 2019-12-20 04:08:28
问题 Based on this I have a table which has values which will be the column names of the PostgreSQL query result. id col1 col2 ---------------------- 0 name ax 0 name2 bx 0 name3 cx 1 name dx 1 name2 ex 1 name2 fx ... ... ... Now I want the result of the query to look like this id name name2 name3 ... 0 ax bx cx ... 1 dx ex fx ... The number of fields on col1 is changed each time that a new field is added. So for that I need to generate a function that will return the results in that way in a

Error when trying to migrate postgresql db to mysql with workbench

由 試著忘記壹切 提交于 2019-12-04 18:55:47
问题 I am trying to migrate a postgresql database to mysql following this tutorial: http://mysqlworkbench.org/2012/11/how-to-migrate-postgresql-databases-to-mysql-using-the-mysql-workbench-migration-wizard/ I am experiencing this error when I try to test my connection Could not connect to Source DBMS [IM002][Microsoft][ODBC Driver Manager] Data soure name not found and no default driver specified (0)(SQLDriverConnect) ODBC connection string Driver=psqlodc;SERVER=127.0.0.1;PORT=5432;DATA... Does

column values as column names in thepsql query

由 ぐ巨炮叔叔 提交于 2019-12-02 06:59:54
Based on this I have a table which has values which will be the column names of the PostgreSQL query result. id col1 col2 ---------------------- 0 name ax 0 name2 bx 0 name3 cx 1 name dx 1 name2 ex 1 name2 fx ... ... ... Now I want the result of the query to look like this id name name2 name3 ... 0 ax bx cx ... 1 dx ex fx ... The number of fields on col1 is changed each time that a new field is added. So for that I need to generate a function that will return the results in that way in a dynamic way. This did that: SELECT id, /* if col1 matches the name string of this CASE, return col2,
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