- #INFORMIX ODBC PARAMETERIZED QUERY SYNTAX COLUMN VALUES UPDATE#
- #INFORMIX ODBC PARAMETERIZED QUERY SYNTAX COLUMN VALUES DRIVER#
Lower Index Filter: root.t0.codwsa = '798780' Lower Index Filter: root.t0.codwsa = '707997' Lower Index Filter: root.t0.codwsa = '708077' Lower Index Filter: root.t0.codwsa = '708037' Lower Index Filter: root.t0.codwsa = '706195' Lower Index Filter: root.t0.codwsa = '774316' Lower Index Filter: root.t0.codwsa = '702928'
Lower Index Filter: root.t0.codwsa = '460648' Index Keys: codwsa (Serial, fragments: ALL) , t12.untweb2, t12.untweb3, t0.serwsalnkįROM twsartweb t0 LEFT JOIN twsarterp t12 ON t0.serart = t12.serart , t0.serart, t12.serart, t12.typart, t12.numart, t12.serartgen , t0.flgmod, t0.flgsup, t0.codmtr, t0.datmtr, t0.datsys SELECT t0.serwsa, t0.codwsa, t0.typart, t0.sermsuart, t0.flgcre
#INFORMIX ODBC PARAMETERIZED QUERY SYNTAX COLUMN VALUES DRIVER#
Our dev team uses (symphony/doctrine) and therefore SQL generated with column aliasing and so is there a parameter in the informix ODBC driver that would allow to optimize this because the postgresql driver is not sensitive to this. We have done some tests to understand better and we find that using select with aliases (select col as col_alias) has a very big impact on performance (125%) if we do a select without aliases. Thanks for the answers, the FETCH_BUFFER_SIZE is already activated. Don't worry, you will get the dialog answers back in realtime, similar to 4GL, if the config is correct :-) Check the front-end configuration and if the server gets the same SQL with the same session parameters and maybe if you have a difference in cursor handling. The PHP Informix Back-End working fine, normally. Does anyone have experience to share with us regarding this dilemma because it would mean that informix in 2021 is no longer a basis for developing applications with new programming languages. We have the feeling that the bottelneck is not the engine but rather the client part which is PDO->ODBC->IFX CLIENT->SERVER. Our problem is that the performances in comparison with PostgreSQL or Mysql are 2 times less good. We would like to use PHP/Symphony with PDO for 100% WEB applications. We have been using Informix for 25 years with 100% satisfaction on its robustness and performance with applications developed in Informix 4gl, delphi and 4js genero. The first 5 records in the summary_data table have been updated.I am facing a very annoying dilemma.
#INFORMIX ODBC PARAMETERIZED QUERY SYNTAX COLUMN VALUES UPDATE#
This example would update the current_category field in the summary_data table with the category_id from the products table where the product_id values match. These are the results that you should see: product_id Select the data from the summary_data table again: SELECT * FROM summary_data WHERE products.product_id = summary_data.product_id) SET current_category = (SELECT category_id Enter the following UPDATE statement: UPDATE summary_data Now let's update the summary_data table with values from the products table. If no conditions are provided, then all records in the table will be updated.Īnd a table called summary_data with the following data: product_id The conditions that must be met for the update to execute. So column1 would be assigned the value of expression1, column2 would be assigned the value of expression2, and so on. expression1, expression2 These are the new values to assign to the column1, column2. Parameters or Arguments column1, column2 The columns that you wish to update. The syntax for the SQL UPDATE statement when updating multiple tables (not permitted in Oracle) is: UPDATE table1, table2.
The syntax for the SQL UPDATE statement when updating a table with data from another table is: UPDATE table1 The syntax for the UPDATE statement when updating a table in SQL is: UPDATE table