topic Re: Change data types of multiple columns at once? in Talend Studio https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267191#M46169 I think you misunderstood the question. Even with the help of this tool, i should get the dropdown of all my 50 columns. Is there an alternative of select all then change data types to double. Thu, 22 Nov 2018 09:34:56 GMT Anonymous 2018-11-22T09:34:56Z Change data types of multiple columns at once? https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267189#M46167 <P>Hello, I have a data set with around 50 columns and in the metadata, the columns are read as string where as i want it as a double. Is there any effective way where i can change them all at once instead of selecting each and every column and then individually changing their data type?</P> Thu, 22 Nov 2018 08:27:59 GMT https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267189#M46167 Anonymous 2018-11-22T08:27:59Z Re: Change data types of multiple columns at once? https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267190#M46168 <P>Hi,</P> <P>&nbsp;</P> <P>This may help you</P> <P><SPAN class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="tconvertype.PNG" style="width: 165px;"><span class="lia-inline-image-display-wrapper" image-alt="0683p000009M1AL.png"><img src="https://community.qlik.com/t5/image/serverpage/image-id/152599iD2B4C4801FDB0BE0/image-size/large?v=v2&amp;px=999" role="button" title="0683p000009M1AL.png" alt="0683p000009M1AL.png" /></span></SPAN></P> <P>&nbsp;</P> <P>Pierre</P> Thu, 22 Nov 2018 09:02:32 GMT https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267190#M46168 Anonymous 2018-11-22T09:02:32Z Re: Change data types of multiple columns at once? https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267191#M46169 I think you misunderstood the question. Even with the help of this tool, i should get the dropdown of all my 50 columns. Is there an alternative of select all then change data types to double. Thu, 22 Nov 2018 09:34:56 GMT https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267191#M46169 Anonymous 2018-11-22T09:34:56Z Re: Change data types of multiple columns at once? https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267192#M46170 <P><SPAN class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="tconvertypecoche.PNG" style="width: 547px;"><span class="lia-inline-image-display-wrapper" image-alt="0683p000009M1YH.png"><img src="https://community.qlik.com/t5/image/serverpage/image-id/134809i9B65D4DEB59B0736/image-size/large?v=v2&amp;px=999" role="button" title="0683p000009M1YH.png" alt="0683p000009M1YH.png" /></span></SPAN></P> <P>Do you mean this checkbox is not helpfull?</P> Thu, 22 Nov 2018 09:39:44 GMT https://community.qlik.com/t5/Talend-Studio/Change-data-types-of-multiple-columns-at-once/m-p/2267192#M46170 Anonymous 2018-11-22T09:39:44Z