How can I work out the maximum row size in a ta开发者_运维问答ble, if I\'m only given the datatype lengths (from all_tab_cols.data_length column) of the columns in the table (i.e. no statistics or ANA
I\'m using this SQL query to create an index: $query = \"CREATE INDEX id_index2 ON countries(geoname_id, name)\";
Can anyone tell me how adding a key scales in MySQL? I have 500,000,000 rows in a database, trans, with columns i (INT UNSIGNED), j (INT UNSIGNED), nu (DOUBLE), A (DOUBLE).
How to get checked Ra开发者_C百科dioButton Index using jQuery? I need to read it and save to cookies to load status later using code
I have a table with multiple indexes, several of which duplicate the same columns: Index 1 columns: X, B, C, D
For starters, I am no DBA and I am working on rebuilding the indexes. I made use of the amazing TSQL script from msdn to alter index based onthe fragmente percent returned by dm_db_index_physical_st
For most records this field开发者_运维知识库 is null.I need to wake up only some records. The table is very big and I want to know which records to wake up.I don\'t want database to seek every row.Co
s开发者_如何学JAVAometimes, I have to re-import data for a project, thus reading about 3.6 million rows into a MySQL table (currently InnoDB, but I am actually not really limited to this engine). \"Lo
I was trying to build a \'site search\' on a simple http site. I have a site, lets call it www.mycompany.com, that is pure html.
I\'m looking for the most basic solution to create multiple indexes on a Java Collection. Required functionality:
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